Chris

Criticize the following statements. 1. In an ionic compound, the number of cations is always equal to the number of anions. [Is it ok to say 'not always'?] 2. The molecular formula for strontium bromide is SrBr(sub 2) [what's wrong wih this?] 3. The mass...

19 years ago

I am writing an literary essay about The Remains of the Day by Kazuo Ishiguro with the topic of "self-deception as self-destruction". Could someone proofread my introduction so far and help me fix any grammatical errors?

19 years ago

We are doing a lab that requires finding the molarity of an unknown AgNO3 solution after reacting NaCl + AgNO3 --> NaNO3 and AgCl and collecting/massing the precipitate. We will be using 10.00 mL of an NaCl solution and 10.00 mL of the AgNO3 solution. We...

19 years ago

Anthroquinone (C14H8O2), an important intermediate in the dye industry, is produced from the reaction of benzene with phthalic anhydride (C8H4O3), followed by dehydration with sulfuric acid. The overall reaction is... C8H4O3 + C6H6 --> C14H8O2 + H20 b) Wh...

19 years ago

Ibuprofen, the active ingredient in advil, is made up of carbon, hydrogen, and oxygen atoms. When a sample of ibuprofen, weighing 5.000 g, burns in oxygen, 13.86 g of CO2 and 3.926 g of water are obtained. What is the simplest formula of ibuprofen? My wor...

19 years ago

Asprin, C9H8O4, is prepared by reacting salicylic acid, C7H6O3, with acetic anhydride, C4H6O3, in the reaction C7H6O3(s) + C4H6O3(l) -> C9H8O4(s) + C2H4O2(l) A student is told to prepare 45.0 g of aspirin. She is also told to use a 55.0% excess of the ace...

19 years ago

Write the net ionic equation for any precipitation reaction that occurs when .1M solutions of the following are mixed. Does the molarity affect the equation at all, or is it just a normal net ionic equation? If the solutions are too dilute A might not ppt...

19 years ago

I have a few questions on how to do a few problems that I got wrong for homework. 1. If 5.28 g of tin reacted with fluorine to form 8.65 g of a metal fluoride, what is the simplest formula of the fluoride? I know my biggest problem here was that I misread...

18 years ago

A horse pulls a barge down a canal. The horse pulls on the rope with a force of 7900 N at an angle of 18 degrees to the direction of motion of the barge, which is heading straigt along the canal. The mass of the barge is 9500kg and its acceleration is .12...

18 years ago

A lamp hangs vertically from a cord in a descending elevator that declerates at 2.4m/s^2 a) if the tension in the cord is 89N what is the lamp's mass? b) what is the cord's tension when the elevator is ascends with an upward acceleration of 2.4m/s^2? I kn...

18 years ago

A section of an alpne cable-car system has a maximum permissible mass of each car with occupants in 2800kg. The cars riding on a support calbe ar pulled by a second cable attached to each pylon(support tower); assume the cables are straight. What is the d...

18 years ago

Which of the following pairs of atoms would you expect to combine chemically to form an ionic compound? A.Li and S B.O and S C.Al and O d.F and Cl e.I and K F.H and N Which of the following pairs of elements will not form ionic compound. a.sulfur and oxyg...

18 years ago

A man is dragging a trunk up the loading ramp of a mover's truck. The ramp has a slope angle of 20 degrees, and the man pulls upward with a force F whose direction makes an angle of 30 degrees with the ramp. a) how large a forec F is necessary for the com...

18 years ago

A .22 rifle bullet traveling at 360m/s strikes a block of wood, which penetrates to a depth of .110m. The mass of the bullet is 1.80g. Assume a constant retarding force.A) how much time is required for the bullet to stop? b) what force in newtons soes the...

18 years ago

A loaded elevator with very worn cables has a total mass of 1800 kg and the cavles can withstand a maximusm tension of 28000N a) What is the maximum upward acceleration for the elevator if the cables are not to brake? b) What is the answer to part a) if t...

18 years ago

A father racing his son has half the kinetic energy of the son, who has half the mass of the father. The father speeds up by 1 m/s and then has the same kinetic energy as the son. What are the original speeds a) of the father? b) of the son? I know that K...

18 years ago

Is average speed (u) the same as root mean square velocity? I found a formula for root mean square velocity which I know is also used for average speed: (3RT/MM)^1/2 Is that right? I don't know what that is supposed to be an average OF, but is all likelih...

18 years ago

I need help balancing this redox equation: H2O2 + Ni+2 --> H2O + Ni+3 in basic solution. Here's what I have so far: Ni+2 --> Ni+3 + 1e- H2O2 --> H2O I can't seem to make the second half-reaction balance. If you follow the rules for balancing basic redox s...

18 years ago

What is the significance of the Mayflower Compact, Virgina House of Burgesses, and colonial town meetings? How are these terms related? Please tell us what you think. We'll be glad to critique your answer. tell me everyone who fought in the french and ind...

18 years ago

Hello, I need help I have to make my own personal code of Ethics following the NAEYC guidelies and also a statement of commitment as I would have to be able to follow for the classrooms and field experience. I am trying to find somewhere where I can look...

18 years ago

Magnesium sulfate is often used it first aid hot-packs giving off heat when dissolved in water. When 2.00 g of MgSO4 dissolves in 15.0 mL of water (d= 1.00g/mL) at 25.0ºC, 1.51 kJ of heat is evolved. A) Write the balanced equation for this reaction. I hav...

18 years ago

Fructose is a sugar commonly found in fruit. A sample of fructose, C6H12O6, weighing 4.50 g is burned in a bomb calorimeter. The heat capacity of the colorimeter is 2.115 E4 J/ºC. The temperature in the calorimeter rises from 23.49ºC to 27.71ºC. A)What is...

18 years ago

Given 2Al2O3 (s) --> 4Al(s) + 3O2 (g) (standard enthalpy change= 3351.4 kJ) a) What is the heat of formation of aluminum oxide? How do I find heat of formation from standard enthalpy change? I know how to do it when I'm given enthalpy, but they aren't the...

18 years ago

Butane, C4H10, is widely used as a fuel for disposable lighters. When one mole of butane is burned in oxygen, carbon dioxide and steam are formed and 2658 kJ of heat is evolved. a) Write the thermochemical equation for the reaction. First I wrote the chem...

18 years ago

If you divide the molar mass of a compound by the empirical formula mass, what is the result? That division should be VERY close to a whole number. Usually, 0.9 to 1.1 or 1.9 to 2.1 (all depending upon the accuracy and precision of experimental data). Tha...

18 years ago

Help me out! Thanks! You guys have really helped me before. Question 1 What does the law of inertia say about the velocity and acceleration of a body that is subject to no external influences? a) The velocity slows to zero as the object decelerates. b) Th...

18 years ago

What is the density of N2O, a gas, at STP? How many moles are in 16 grams of O2? density = mass/volume 1 mol of a gas occupies 22.4 L at STP. density = molar mass/molar volume = ?? #2. 1 mol O2 has a mass of 32 grams? grams = mols/molar mass = ??

18 years ago

what mass of protons would be required to just neutralize the charge of 1.0g of electrons? how do I answer this? You know the mass of an electron. Calculate how many are in 1 gram. You will need the same number of protons. Knowing the mass of a proton cal...

18 years ago

Find two Web sites dealing with indigenous cultures and/or religions. Discuss how modern civilization has impacted the spiritual lives of the indigenous peoples you explored. Are the indigenous religions still being practiced today? If so, how have the pr...

18 years ago

Consider the interrelatedness of everything in the cosmos as it is expressed in many indigenous religions. How do you think the importance of these relationships developed? What spiritual purpose do you think they serve for indigenous peoples? Your questi...

18 years ago

A cart of mass 340 g moving on a frictionless linear air track at an initial speed of 1.2 m/s undergoes an elastic collision with an initially stationary cart of unknown mass. After the collision the first cart continues in its original direction at .66m/...

18 years ago

1. Use standard entropies and heats of formation to calculate delta-G of formation at 25° C for a) cadmium(II) chloride (s) b) methyl alcohol, CH3OH (l) c) copper(I) sulfide (s) My problem is that I don't know how to calculate delta-G of formation. I know...

18 years ago

Write a Balanced equation for the chemcial reaction Acetylene gas (C2H2) burns in a welding torch with oxygen to form carbon dioxide gas and water vapor. C2H2(g) + O2(g) ==> CO2(g) + H2O(g) It isn't balanced. I will leave that for you. How do i balance it...

18 years ago

Hi everyone, Our class is studying moogles and I was hoping that you could help me find some research materials to help me answer this week's take-home quiz questions. Here are the questions I am having difficulty with... 1) Identify the three common vari...

18 years ago

A great way to get to Vancouver, British Columbia, is by train. Is 'train' the subject or "way" or even Vancover, BC? And is 'to get' or 'is' the predicate? Thank you, Chris

17 years ago

A great way to get to Vancouver, British Columbia, is by train. Thank you for your reply, but I am still confused a bit. Is 'train' the SIMPLE subject or "way" or even Vancover, BC? get'Thank you, Chris

17 years ago

Consider the decomposition of ammonium hydrogen sulfide: NH4Hs(s) <--> NH3(g) + H2S(g) In a sealed flask at 25*C are 10.0 g NH4HS, ammonia with a partial pressure of .692 atm, and H2S with a partial pressure of .0532 atm. When equilibrium is established,...

18 years ago

Imagine that you are an Orthodox Jewish Rabbi and someone hands you a bag of meat. Upon inspection, you conclude the bag contains pork. However, your friend insists that the bag actually contains a delicious meal of chicken. What are some specific scienti...

18 years ago

Which religions ban the eating of pork? What is the reasoning behind each religion's decision not to eat pork? How has this effected the worldwide distribution of pork-related products? http://www.google.com/search?as_q=pork+religions&hl=en&num=10&btnG=Go...

18 years ago

Complete. Name the property shown. 5× (-3 + -6)= -15 + ? also which property is shown? _________________ http://dictionary.reference.com/search?q=distributive+property&r=66

18 years ago

Wat is 0.0006 and 0.00108 in scientific notation? 6*(1*10^-4) I will be happy to check the other for you. Thank you for answering.

18 years ago

1. (5yd 2ft) + (7yd 1ft) = ? 2. (6mi 10ft 4in) - (4mi 8ft 8in) = ? 3. 5(2yd 10in) = ? 4. What is the square root of 36/49? My Guesses: 1. 13yd 2. 10mi 18ft 12in 3 and 4. I have no idea. 3. 10yd 25 inches It gives 4 choices but 10yd 25in is not 1 of them.....

18 years ago

1. What would you measure your mass with? a. mg b. g c. kg 2. What is a simpler way to write 12d+7d+5-3d+2d? (add together all the numbers with hdh keep the hdh after the total) My Guesses: 1. kg 2. I have two answers: I am pretty sure it is: 24d-5 OR...

18 years ago

Write 8^5 as a product of the same factor. My Guess: 8~8~8~8~8= 32,768

18 years ago

At the instant oxygen is reacting at the rate 5.0 x 10-4 mol/L*s, at what rate is NO reacting and NO2 forming? this is a method of initial rate problem. i don't know what to do the chemical equation is 2 NO(g) + O2 (g) ---> 2 NO2 (g)

18 years ago

Can anyone give me examples of the definitions: social construction of reality, self-fulfilling prophecy, and incorrigible proposition?

18 years ago

Write a mathematical sentence to describe each problem situation. 1. The Length of a ruler is at least 12 inches. 2. Tomas is at most 14 years old. Please help because I do not know how to do this! Thank you so much.

18 years ago

(7x^5)(8x) (-2.4m^3)(3.5m^-3)

18 years ago

paw is to cat as trombone is to instrument, hoof is to gallop, clock is to time, or stem is to daisy?

18 years ago

slipped is to fell as: dozed is to napped, read is to wrote, drank is to ate, or jumped is to rose?

18 years ago

One number is 6 times another. The greater number is 1680. What is the lesser number?

18 years ago

heyyyy i have this scale,the points are 0,5,and 10. and between 0-5 also 5-10,there are only 2 more points that numberless. i am confused. what numbers could possibyl go there.

17 years ago

What is a subunit? How can I determine where Docosahexaenoic Acid has a subunit?

17 years ago

(-9)-4w+7w=42 I thought I knew how to do this, but my teacher said i was wrong. This what I thought: (-9)-4w+7w=42 (-9)-11w=42 +11w +11w (-9)=42+11w -42 -42 (-9)-42 (-9)+(-42) 11w=(-51) /11 /11 w= 4.636363636363...... She told us that the correct answer i...

17 years ago

What is the reciprocal of -3.21? I'm not sure but I think that this is what you have to do: -3 21/100= -321/100= -100/321 Answer: -100/321 Is this correct? If not, show me how to do it, and give me the correct answer. Thank you.

17 years ago

i need help understanding subjunctive form

17 years ago

Finding the variable 27x -3 (X-6) = 6

17 years ago

Find the variable? 8C + 1 = 7C-2(7+C)

17 years ago

2t/3 - 11 = 4 (16 - t ) - 1t/3

17 years ago

Please help with the below. I don't understand the previous answers. Find the variable? 8C + 1 = 7C-2(7+C)

17 years ago

I have to do an essay on Carbohydrates. Basically I'm just making a informational essay, but I need help outlining it, can anyone help me with this?

17 years ago

how is thegeography of Italy and Greece similar?

17 years ago

Here is the question on compound interest. It is not graded, but is bugging me because I can't figure it out. After the third year, $2662 was in Samantha's account. If the account continues to earn 10% interest, how much money will be in the account (1)af...

17 years ago

How do you solve this by linear combinations? 4x+3y=-8 3x-3y=15

17 years ago

Hey guys. I'm wondering if you can help me with my Term Paper, if you can help me outline it. My term paper is about Marijuana. Basically an expository. There is no other instructions.

17 years ago

44+44/4s=55 whats another way using 5/4s to equal 55

17 years ago

can someone give me the noun form of peripheral? Chri

17 years ago

I need help in diagraming sentences please

17 years ago

1. If 36.23 mL of potassium permanganate solution is required to titrate 1.041 g of FAS (FeSO4(NH4)2SO4 * 6 H2O, molar mass = 342.0 g), calculate the molarity of KMnO4.

17 years ago

How do you do a rough draft for a research paper.

17 years ago

A 10 kg block of ice has a temperature of -13°C. The pressure is one atmosphere. The block absorbs 4.10 106 J of heat. What is the final temperature of the liquid water? I multiplied 10kg by -13 and divided by the heat absored by the block 4.10*10^6 but i...

17 years ago

GIVEN: Light of wavelength 585 nm falls on a slit 6.66×10−2 mm wide. Part A: On a very large distant screen, how many totally dark fringes (indicating complete cancellation) will there be, including both sides of the central bright spot? *Answer: ????? Pa...

17 years ago

The sign on the parking meter says “Out of Order,” so the meter isn’t working. a) true beyond a reasonable doubt b) probably true c) possibly true or possible false my answer is "B" please help

17 years ago

The annual rainfall in California’s north valley averages twenty-three inches. So the rainfall next year will be twenty-three inches. a) true beyond a reasonable doubt b) probably true c) possibly true or possibly false The answer is (C) possibly true or...

17 years ago

Element Symbol Atomic Mass --------------------------------------- Bromine Br 79.904 Calcium Ca 40.078 Carbon C 12.011 Chlorine Cl 35.4527 Cobalt Co 58.93320 Copper Cu 63.546 Flourine F 18.9984032 Hydrogen H 1.00794 Iodine I 126.904 Iron Fe 55.847 Lead Pb...

17 years ago

What mass in grams of sodium hydroxide is produced if 20.0 g of sodium metal reacts with excess water according to the chemical equation 2Na(s)+2H20(l)=2NaOH(aq)+H2(g)? Please show me step by step how to do this because I have 5 other questions like this...

17 years ago

What is the distance from one wave to the next?

17 years ago

You are the supervisor for a large technology-based corporation. One of your subordinate managers, Carly, is heading up a project for a new system that is scheduled to market on the 1st of the year. It is August and things are not progressing at the pace...

17 years ago

Combinig sentences with prepositions 1)The smell came from his dirty feet. The smell was in the room. 2)Mrs.Thompson bought a house. The house was in a new neighborhood. 3)The children are looking for toys. Thay are looking around the house. 4)The orchest...

17 years ago

dangers of nuclear radiation

17 years ago

What are some things Nuclear Radation Can affect?

17 years ago

I have no clue how to do this (uniform motion 1)2 bycicles start from the same point and ride in opposite directions. 1 rider is moving twice as fast as the other. In 3h, they are 72mi apart. Find the rate of each rider

17 years ago

2)A motorboat leaves a dock and travels at an average speed of 15mi/h toward an island. The average speed on the return trip is 10mi/h. How far is the island from the harbor if the total trip takes 5h? (HInt-first find the 2 times)

17 years ago

A car trveling at 88km/h. If the bus has a 1.5h head start, how far from the starting point does the car overtake the bus?

17 years ago

were doing a review over what we learn i forgot what to do 6x+4y=16y-6 is it 6x+20y-6

17 years ago

L=(2pied)rh

17 years ago

What is the difference between potential & Kinetic energy??!

17 years ago

The rocketdriven sled Sonic Wind No. 2, used for investigating the physiological effects of large accelerations, runs on a straight, level track that is 1080 long. Starting from rest, it can reach a speed of 1610 in 1.80 . what is the distance covered in...

17 years ago

Were the biginning of Judasim like?

17 years ago

How long does it take a 60 watt motor to do 8500 J of work?

17 years ago

This math question i do not get it is Sanjay earns $13.00 each week from his papaer route.He earns $.15 for each daily paper and $.35 for each sunday papaer he delivers. He delivers twice as many daily papers as sunday papers. How many of each type does h...

17 years ago

I am having trouble deciding what formula to use for the following problem. Any help would be appreciated. Magnesium in flashbulbs burns according to the equation 2 Mg (s) + O2 (g) --> 2MgO (s) What mass of Mg combines with 5.80 L of O2 measured at STP?

17 years ago

What is the domain of y=x

16 years ago

What is the domain of y=x

16 years ago

What is the domain of y=x i don't remeber either that or x=y

16 years ago

F(x)=sqrt(9-3x) determine the domain of f How would I break that out to determine f

16 years ago

express using radical notation: (6ab)^4/3 This is what I have so far this be ^3sqrt6ab

16 years ago

sqrt(x^5 y^2)+ sqrt(9xy^2) How would I simplify this?

16 years ago

(^5 sqrt symbol a^6)/(^4 sqrt symbol a^3) Is the answer 20sqrt symbol a^9

16 years ago

(3+sqrt x)(4- 3sqrt x) is the answer 12- 5x sqrt

16 years ago

A great way to get to Vancouver, British Columbia, is by train. Is 'train' the subject or "way" or even Vancover, BC? And is 'to get' or 'is' the predicate? Thank you, Chris

17 years ago

Thank you for your response, but I am still confused. I am looking for the simple subject (way?) and predicate (is). Thanks in advance for your help! Chris

17 years ago

How did u figure #2 out?

18 years ago

Thank you Mr. Pursley

18 years ago

i see what your saying. so multiply the rate by two to get the rate of NO? but what is NO2 forming

18 years ago

to take out square roots, just basically square the number. for example to take square root of four is 2 but to take out the square root is square the four and your answer remains 4

18 years ago

the answer is 0

18 years ago

HOCH2CH2OH, FCH2CH2OH, FCH2CH2F because of decreased hydrogen bonding from left to right

18 years ago

jumping to rising?

18 years ago

stem is to daisy

18 years ago

so its 6n < 1680 ÷6 ÷6 n < 280

18 years ago

1.29e-03?

17 years ago

(-9)-4w+7w=42 (-9)-(-4)+7w=42 (-9)-3w=42 +3w +3w (-9)=42+3w -42 -42 (-9)-42 (-9)+(-42) 3w= -51 /3w /3w w= -17 I got -17. How is this possible?

17 years ago

I know that it was positive. I wrote a minus sign, not a negative sign. What do I have to do. P.S- Sorry, but I really want to get it right.

17 years ago

Oh, okay I understand now. Thank you. I did the correct work.

17 years ago

So, my answer is correct?

17 years ago

Okay, thank you so much, DrBob222.

17 years ago

Lewis acids are electron pair acceptors. Therefore, if they come into contact with your organs or skins, they pull electrons away from vital cell components, wreaking havoc on your body. This accounts for the "burn" you experience after coming into contac...

17 years ago

About what they are, how it helps your body, what they do in your body, etc... Basically, anything that informal.

17 years ago

Two methods of logical reasoning are deductive and inductive reasoning: (a) Deductive: Facts, certainty, syllogisms, validity, truth of premises sound arguments & conclusions, and (b) Inductive: Diverse facts, probability, generalizations, hypotheses, ana...

17 years ago

I still don't completely understand how you got x=7 forgive me for being slow, just never liked math.

17 years ago

OH i get it, ah alright. Now to get y=x-9 i just plug in x=7 right? and would leave me with y= -2 right? and it would look like this y=7-9 and y=-2

17 years ago

How did you get x=1? by pugging it in with the 8 right?

17 years ago

il était bon que l'eau n'ait pas été froide

17 years ago

no it is oxygen! DUH!

17 years ago

Search the first sentence on google. It is the first website. A pdf that has test answers on it. You will findd it there. It wont let me post the url for some reason It is on this test

17 years ago

Thanks

17 years ago

which colonies were founded as a result of push factors

17 years ago

answer is actually : 3a square root of 5. 45a^2 simplied is 9a^2 x 5 square root of 9a^2 is 3a. Square root of 5 is radical 5. Squaring your answer would check to see if you have the correct answer. Thus mine is the correct one. Sarah was close.

17 years ago

Arrg, stop deleting my message, my last one was correct. first of all, cutting 2 slices of a log will make it into 3. if it took 12 minutes to cut 2 slices into 3, it takes 6 minuts to cut a slice. Now taking the same log, you need 6 pieces. so cutting 3...

17 years ago

I believe it was William Howard Taft.

17 years ago

You can get the answers on either pfanswers7[dot]co[dot]cc

17 years ago

You can get the answers on either pfanswers7[dot]co[dot]cc

17 years ago

You can get the answers on either pfanswers7[dot]co[dot]cc

17 years ago

fwetws

17 years ago

i will go to him and give the phone to him

17 years ago

A car trveling at 88km/h overtakes a bus trveling at 64kmlh. If the bus has a 1.5h head start, how far from the starting point does the car overtake the bus?

17 years ago

sorry i forgot to put that it took the whole trip 5hr

17 years ago

solve for the underlined 6x+4y=16y-6 _

17 years ago

Are they, D,B,&R???????

17 years ago

To help learn who!!??

17 years ago

They are eithe rcounted by 2's or counted by a straight 1.

17 years ago

I cant use any Statergies Accept for a Table

17 years ago

Thank you!

17 years ago

i remeber now its y

16 years ago

oh i was thinking of something else

16 years ago

what about for The expression using radical notation: (6ab)^4/3

16 years ago

okay, thanks

16 years ago

Nevermind I figured it out it is sqrtx(x^2y+3y)

16 years ago

do you mean 20sqrt symbol a^9

16 years ago

So it would be 12-5sqrtx-3x?

16 years ago

Is the answer (23/13)+(43/13)i

16 years ago

Chemical sometimes used to make the specimen visible

16 years ago

the memory rule is to remember.

16 years ago

now if i wrote out the equation.. N2 + H2 ==> NH3 then balanced it.. 3N2 + H2 ==> 2NH3 could the numbers given possibly just be extra information that is unneeded, and the volume of ammonia simply be 2 * 22.42 because its at STP? i really would appreciate...

16 years ago

ok i wrote the other coefficients wrong wow its getting too late for this

16 years ago

Erm.. ok.. PV = nRT (2.25)(13.7) = n(.08206)(366.15) n = 1.026 1.026molH2 * 2molNH3/3molH2 = .684molNH3 PV=nRT (?)(?)=(.684)(.08206)(?)

16 years ago

Ohh, nevermind, your saying I should use the same values I used before for P and T ok.. what I got was 9.13L NH3 thank you so much for your help!

16 years ago

continued 4c=3d+3 c=d-1 i got (6,7) x=1/2y+3 2x-y=6 i got no solution 8x+2y=13 4x+y=11 i got no solution 2x-y=-4 -3x+y=-9 i got (13,30) 3x-5y=11 x-3y=1 i got (7,2)

16 years ago

I'm going to dig a Love Canal in your lawn... tomorrow night. 8:36. Silhouette. Lamp post. You know the drill.

16 years ago

I guess I should of been specific with my question. What would be the possessive form of: foxes fur, monkeys tails, and pony hooves

16 years ago

ugh my bad the information I'm given is: O2 ==> 2 O(g)ΔHºrxn=498kJ/mol O(g) + O2(g) ==> O3ΔHºrxn = /106kJ/mol I think what I'm supposed to do is change the two reactions I'm given by either reversing them or multiplying by a coefficient, then doing the sa...

16 years ago

1 *(O2 ==> 2 O(g)ΔHºrxn=498kJ/mol) 2 * (O(g) + O2(g) ==> O3ΔHºrxn = -106kJ/mol) O2 + 2O + 2O2 ==> 2O + 2O3 3O2 ==> 2O3 498-212=286ΔHºrxn is that right? and if so, how did you know which numbers to multiply each equation by?

16 years ago

I think understand the concept but could you give me an example with numbers?

16 years ago

no idea.

16 years ago

by: par to: pour due : dû

16 years ago

Unité d'étude indépendante

16 years ago

thank you very much!

16 years ago

It looks right, but I can't be sure if you're entirely correct. Did you use your textbook to find these values?

16 years ago

I have a question for Mrs. Sue. When you used quotations around University when describing Ashford were you trying to suggest something? I am about to finish my accounting degree there and have often wondered if I will fin discrimination because of the st...

14 years ago

If your first equation is x^(1/3) - 2/5 =0 then x= (2/5)^3 = (2^3)/(5^3) = (8/125) = 0.064 for your second equation I believe you should do the following: (x-4)^3/2 = -6 First raise both to the 2/3 power to get rid of the ^3/2. (((x-4)^3/2)^(2/3)))=(-6)^(...

16 years ago

I think they are two separate questions and since the -6 is on the right sideto find x one would square both sides and find the cube of that result then subtract add four. I could be mistaken.

16 years ago

I think they are two separate questions and since the -6 is on the right sideto find x one would square both sides and find the cube root of that result then add four. I could be mistaken

16 years ago

You are a god.

16 years ago

Wow, thanks.

16 years ago

Tell him theta was just a random representative and in no way correlated with radians/degrees.

16 years ago

And your question is? Do you want simplification? If so: (81y^30)/(2z) should fit the bill. Remember when you have powers inside a bracket taken to another power outside of the bracket ex: (2x^2)^3 The powers multiply together, so (2x^2)^3=(2^3)(x^6). As...

16 years ago

(3/4)(1/5)(3/10)=9/200 Multiply all of the values on top for the numerator. Multiply all of the values on the bottom of the fractions for the denominator. Is that a 6*(2/3)/(10/21)? If so: =(12/3)/(10/21) = 4 / (10/21) = (4*21)/10 = 84/10 = 8.4

16 years ago

C and D are worded extremely poor.

16 years ago

I plugged that into my graphing calculator and that isn't right. Could someone help?

16 years ago

12 = 10X X = 12/10 X = 1.2 got it....

16 years ago

The entry that I would recommend is: Cash $2000 Deposits received (liability account) $2000 As the money is used: Debit deposits received $XXXX Credit Income account $XXXX

16 years ago

Wait... so it's 3 multiplied by 4? Sorry, I'm not used to reading when it's typed out.

16 years ago

The system is an Atwood machine, by the way.

16 years ago

cos A = .1 In your calculator type in: cos^-1(.1) and for sec D: 1. 1/cos D = 1.8 2. 1.8 Cos D = 1 3. 1/1.8 = Answer 4. cos^-1 (Answer from step 3)

16 years ago

I think the poem is just about a mother trying to reassure her kid and trying to make her feel better. Maybe trying to calm her down, kids can get restless.

16 years ago

Ok, I'm kind of confused. A log's base typically 10 right? Why would you write log 3^(2-x)? Shouldn't it be log(sub3) 2-x) ?

16 years ago

Yeah, it was to solve for A. I assumed it was to multiply by 3. Seeing as 4^3 = 64. log(sub a) 4 = .321

16 years ago

How does the meter in this line emphasize this use of alliteration? Help please! The line is And the sheen of their spears was like stars on the sea. I do not even know what the meter is in this line. The last two websites help alittle but I still don't k...

16 years ago

Thanks for the suggestion, however I have to complete it using small models with plasticine etc. It doesn't need to be highly accurate, I just need something that can show a difference between the 2 types of crashes I suppose.

16 years ago

All good, can be closed

16 years ago

oh, and i just wanted to add my opinion on this.. don't know if it is right because i can't find info to back it up.. but I'd assume that Canada is at a disadvantage because countries like China and India can produce plastics at low-cost, low labour price...

16 years ago

im guessing feldspars because they are used in everyday products such as glass and ceramics is that right please correct me if i'm wrong

16 years ago

feel free to add extras

16 years ago

No promises this is right, but: Normal force is acting up on the bag, and that is given to be a maximum of 50.8 N. To balance this force is the mg force which points strait down towards the ground. By equating mg = 50.8 and g = 9.81 then you can solve for...

16 years ago

Si, I am giving most of these in the command form, we need at least 10 informal commands and 4 negative commands. Although most of this helped me, I am still a little confused about using a reflexive command like te acueste... and yes, I go to bed at 6 an...

16 years ago

whether you think most Americans believe these misconceptions, and why or why not.

15 years ago

It means where are the hot women

15 years ago

thanks for you help and especially explanation

15 years ago

Pg 201 of techniques under the subtitle "Poor Separation of a Mixture" should answer #2 for you.

15 years ago