Kate

This page lists questions and answers that were posted by visitors named Kate.

Questions

The following questions were asked by visitors named Kate.

Consider 100g of 5.5% (mass) solution of NaNO3. Complete the following table, before calculating molarity, molality and mole fraction of NaNO3. Solute(NaNO3)|Solvent(H2O|Soln Mass(g) 100g Moles ---- RefInfo 85g/mol 18.02g/mol Density=1.00g/mol (This goes...

What kind of careers can a person with a background in geography have? Plz help. Writing a paper for it. Thanks. These sites have information about careers in geography. Look at the bottom of the page in the first site. http://www.aag.org/Careers/career_s...

State the vertex of the graph: y=2x-6x+9 ...the 2x is squared. y = 2x^2 -6x + 9 The vertex is where the function is a minimum. That would be where dy/dx = 4x -6 = 0 x= 3/2 If you are not familiar with calculus, then rewrite the expression y = 2 (x^2 -3x +...

solve to four decimals places 5.0118 sinx - 3.1105=0 :for all real x values I will be happy to critique your work. Solve for sinx, then arcsinx

For an essay, I'm using the quote “One Ring to rule them all, One Ring to find them, One Ring to bring them all and in the darkness bind them” (The Fellowship of the Ring, page#). I'm not sure what to put for the page number because the quote is in the ve...

Hi there. I'm from Poland and I'm studying English. I need some help with a True/False exercise. There's a piece of text and there's a question below it and you need to answer it with true or false. My query is especially aimed at English Teacher's and na...

Mere and Ruth investigated the relationship between the applied force, F, and the extension, x of a spring. The results they obtained are shown in the table below. Force F (N) Extension x (M) 0.0 0.0 2.0 0.033 4.0 0.066 6.0 0.099 8.0 0.132 10.0 0.165 stat...

What improvements could i make to this lab? so far i only have that the graduated cylinder should be changed to a buret for a more accurate measurement. Procedure: Part 1 Begin by measuring the mass of the empty calorimeter and record the value. Next, add...

I know how to graph points but I need the points to this equation. f(x)=(-x)^4+4x^2-2x solve by making a table of values. It says I also need the coordinates at which the relative maxima and minima occur.

If a Li 2+ ion, initially in the 2nd excited state absorbs a photon of light with a fequency of 2.82 X 10^6 GHz, what will be the final energy level for this electron? Show all stepts to get final energy level. i have no clue what this question is even as...

Solve log(1/8) x=-1 Can some explain how to do this along with the answer.

Is this text correct? Chinese new year The chinese people celebrate new years eve in the first new moon of Febraury,it changes every year, it takes two weeks, from the new moon to the full moon, people wear red clothes in new year, they bring good luck in...

Sorry I get confuse, the text is this: Chinese new year Chinese people celebrate new year in the first new moon of Febraury,it changes every year, it takes two weeks, from the new moon to the full moon, people wear red clothes in new year, they bring good...

What is the product of 7/16, 4/3 and 1/2?

The decimal form 1.46 becomes ______ expressed as a percent. 1- .146% 2- 1.46% 3- 14.6% 4- 146% 1.46 x 100 = 146% is this correct?

Henry bought a new dishwasher for $320. He paid $20 down and made 10 monthly payments of $34. What actual yearly interest did Henry pay? 1 - 14.55 2 - 29.09 3 - 34.38 4 - 68.75

suppose you have 102m of fencing to make two side by side rectangles, making one large rectangle when put together. What is the maxium area that you can enclose?

The publisher of a magazine that has a circulation of 80,000 and sells for 1.6 a copy decides to raise the price due to distribution costs. By surveying the readers the publisher finds that the magazine will lose 10,000 readers for every .4 increase in pr...

solve each inequality: (x-4)(x-2)^2(x-3)^2 < 0

A backpacker carries 2.5 L of white gas as fuel for her stove. How many pounds does the fuel add to her load? Assume the density of white gas to be 0.79 g/cm^3.

The top of a 15-foot ladder is 3 ft. father up a wall than the foot of the ladder is from the bottom of the wall. How far is the foot of the ladder from the bottom of the wall?

Classify each of the following mixtures as homogeneous or heterogeneous: 1. Shampoo 2. Vegetable Oil

we are working with logarithms and i don't understand them at all! I get the basic content but then it gets a little more advanced, and I get completely confused. There's one in particular that I have NO idea how to do. Help please?! Simplify: 3 ^ [log(ba...

I need a sentence with the words "loose" and "folklore"? Help?

I have two questions. 1. How do I predict the formula of ionic compounds when one is a polyatomic ion? Example: Al (+3) and SO4(-2). 2. How would I obtain the charge of Hg in the formula HgCl2?

HOW MANY PEOPLE DOES IT TAKE TO BUILD A GREEN ROOF?

Why is ounces abbreviated with oz.?

Use the counting principle to determine the number of different arrangements of bicycles that are possible.

How many butane molecules are present in a sample that contains 5.0 moles of butane? (Butane- C4H10) What would be the mass of 75 moles of butane?

The rock in a lead ore deposit contains 84% PbS by mass. How many kilograms of the rock must be processed to obtain 1.0 kg of Pb?

Hydrogren, a possible future fuel, can also be obtained from other compounds such as ethanol. Ethanol can be made from the fermentation of crops, such as corn. How much hydrogen in grams can be obtained from 1.0 kg of ethanol (C2H5OH)?

I'm having a hard time figuring these out. Please help me on them! For the reaction Fe2O3 + 3 Co = 2 Fe + 3 CO2: a) how many moles of Fe can be produced from 75 moles Co? b) how many moles of CO2 can be produced from 15 moles of Fe2O3? c) what is the maxi...

1) Convert 0.525 atm to kPa 2) Convert 125000 Pa to psi

A tank contains 0.450 kg of oxygen(O2) compressed into a volume of 2.32 L. Estimate the gas pressure (in atm) inside the tank at 5 degrees celsius.

Convert 125000 Pa to psi

A tank contains 0.450 kg of oxygen(O2) compressed into a volume of 2.32 L. Estimate the gas pressure (in atm) inside the tank at 5 degrees celsius. Do I convert 0.450 kg from grams to moles, and if I do, do I use the molar mass of oxygen?

If a gas has a volume of 400.0 cm cubed at a pressure of 755 mmHg and a temperature of 25 degrees celsius, what would be its pressure (in atm) at 85 degrees celsius if the volume is reduced to 50.0 cm cubed?

Sodium reacts with chlorine gas according to the reaction:\ 2 Na (s) + Cl2 (g) ---> 2 NaCl (s) What volume of chlorine gas, measured at 687 mmHg and 313 K, is required to form 275 g of NaCl?

If A is a non-polar chemical and B is a non-polar solvent, what type of solubility (high or low) would you expect between A and B? --Is it high solubility?

Find the values of x for which the equation sin x = -1 is true 2 pi n pi/2 + 2 pi n pi + 2 pi n 3 pi/2 +2 pi n Can someone please help. I don't understand how to do this.

How many grams of KCl can you dissolve in 50. g of water at 70 degrees C?

I know how to use the equations pv=nrt and P1xV1/n1xT1 = P2xV2/n2xT2, but I don't understand when to use them. I have a test tomorrow and I'm going over some word problems, but I can't figure out how decide which formula you need to use. Is there a specif...

I'm reviewing for a test tomorrow, and I was wondering about this question. Convert 55 mi/gal to meters/liter. I'm not sure how to go about it, though when I tried it I got 89000.0m/4L. But, I'm not sure if that is right.

I got some multiple choice questions to practice and I'm not sure of how to get the answers... 1). Which of the following corresponds to the COC bond angle in dimethyl ether?-94 degrees, 110degrees, 180 degrees, 122 degrees, or 60 (i think it's 110 2). cl...

I am having problems with graphing inequalities how do you do them for example x + y < 3 or x> -2

How do you say "twin town" in Italain. I know its "Une ville jumelle" in french. A.s.a.p X

Write correct preterite forms of the verbs ir and estar to complete conversatin. Claudia y yo ______a comprar sellos; _______ en el correo por quince minutos. Elías _________ a cobrar un cheque; ______ en el banco por veinte minutos. Irene y Marcos ______...

A guy wire reaches from the top of a 24 ft. pole to a point on the ground 8 ft. from the pole. Find the length of the wire.

A cold yam is put into a hot oven, the temperature of the yam begins to rise. The rate R in degrees per minute at which the temperature rises is governed by Newton's Law of Heating, which says that the rate is proportional to the temperature different bet...

Find k so that the following function is continuous on any interval: f(x)= kx 0 (less than or equal to) x (less than) 2 3x^2 2 (less than or equal to x) i know the answer is 12 but i don't know how to arrive at that. could you please walk me through the s...

I have a few logic questions that I am having difficult with and would be greatful for any insight... #1 I need to know if this is a real or apparent argument. A: I saw Bob with Mary last night. B: You saw Frank, Bob's identical twin, with Marsha last nig...

I keep getting different answers from different sources on these questions... I'm still not sure. Anyone else who can lend their opinion? #1 I need to know if this is a real or apparent argument. A: I saw Bob with Mary last night. B: You saw Frank, Bob's...

You have 84 coins, in dimes or nickles that equal $7.15, how many dimes and nickles

what is the answer if, for example, the base number is 8 and the exponent is 0?

Does anyone know pakistan's current position on russia/georgia, the environment,and the status of permanent refugees?

What is an adenosine triphosphate? I don't understand the fancy definitions. Can some one please simplify it for me? Thanks!

How do I convert the atmospheric pressure = 30.17in to mmHg? also how do I convert to mm H2O?

I need help making a political cartoon. It needs to be about obama any help is greatly apreciated

I need help! I found the change in Temp= -.9 degree C. I don't know what to do next...? What value from this problem do I use as my q(heat capacity) to plug into the equation q= m X Cs X change T? The question states: 120mL of H2O is intially @ room temp...

HELP!! I cannot find the value of ÄH, for the following reactions. A + 2B --> C + 3D , ÄH = 154 kJ 1/2C + 3/2D --> 1/2A + B, ÄH= ? I have tried the answers -302 and 154 and neither were correct. Have any suggestions?? Thank You!

how do u find the zeros of x^3+13x^2-16x+8? w/o a calc?

my teacher says we should replace the verb to be (is, are,was,were, has been) and there are a couple places in my essay where i cant figure out hiw to change them...any suggestions would be greatly appreciated - Another instance of symbolism in “The Most...

Whats the history/background on the pH Scale

why do people conduct an experiment using pH? whats the purpose of the pH scale? why do we use it?

what would be a good idea for a video project on first wave feminism?

What could you say if a rock had large crystals? Explain. What could you say if a rock layer had a folding? Explain.

A set of input values is sometimes referred to as the replacement set for the independent variables. Evaluate each function for the given replacement set. f(x)=3x-6;{-3.5,-1,1/4,2,11} f(x)=x(1-2x);{-8,2/3,1,9,4}

Describe the attractive and repulsive forces that exist between two atoms as the atoms move closer togther.

What information can be obtainted by knowing the electronegativity difference between two atoms?

Why do molecular compounds have low melting points and low boiling points relative to ionic substances?

Ben Smith on Obama: 'Lipstick on a pig' Comment on Ben Smith's commentary on the "lipstick on a pig" remark copied below. Write about commenting on the motives of Obama's surrogates joking that Palin's record can't be concealed with lipstick, and the moti...

What happens in terms of energy and stability when a covalent bond forms?

Why is Edgar Allan Poe insane?

1. Why does the distance between two nuclei in a covalent bond vary? 2. How does a molecular orbital differ from an atomic orbital?

1. How does the strenght of a covalent bond relate to bond length? 2. Compare the degree of polarity in HF, HCL, HBr, and HI? 3. Given that it has the highest electronegativity, can a fluorine atom ever from a non-polar covalent bond? Explain your answer.

Log on to MTVTr3s and answer the following question : What videos were voted Best of 2008 ? Name the artist and the Title of the Song ? mtvtr3s. com/music/ For some reason I could not find them?

bud not buddy vocabulary words list

How did Octavius Valentine Catto die?

Comment on Ben Smith's commentary on the "lipstick on a pig" commenting on the motives of Obama's surrogates joking that Palin's record can't be concealed with lipstick, and the motives of the Republican charge that Obama compared Palin to a pig. ________...

What type of molecules can dissolve in polar liquids? What type of molecules can dissolve in nonpolar liquids? What type of liquid is water? (polar or nonpolar) show your calculations.

Most dirt on your body is nonpolar, and is trapped in oil residue on your skin. What type of liquid is oil? (polar or nonpolar) show your calculations. Would water rinse off this dirt, since it is in oil? Why or why not? Does soapy water rinse off this di...

What type of molecules can dissolve in polar liquids?

What type of liquid is water? (polar or nonpolar) show your calculations.

Would water rinse off this dirt, since it is in oil? Why or why not?

Find the value of y in the equation y = log 2 32. a. 5 b.16 c.64 d. 1024

48cm = ___m 458cm + 47m + 55cm = ____cm

Mark Twain's skill as a humorist shows in Chapter XI. He uses a play on words in this chapter. What is it?

please explain to me how to figure out what fraction is greater. ex. 5/6 __ 1/8

Why are coral reefs generally limited in distribution to shallow marine waters?

Suppose you viewed a movie that was running backwards. You would see lots of odd things happen: streams would flow uphill, a diver would emerge upwards and go back to the diving board etc. If these backward moving events actually happened in nature, which...

if every single person on this planet (about 5x10^9) could eat 1 pizza every second, how many years would it take them to eat 1 mole of pizza. 1 mole= 6.02x10^23

What do we learn about Sir Gawain's character from his speech in line 343-365?

How did life in the British North American colonies contribute to the creation of a unique American identity? What are some examples of this?

How do I simplify 28% of 64?

e/3-2x3 for e=41.4 Please explain. Thank you!

k/3 - 6.4 for k=12 Thank you!

Please can someone help me! I've got to do a biology experiment to Investigate the relationship between reaction temperature and the effectiveness of action of the enzyme amylase on starch. I really don't know what it is all about pls someone help :)

Use synthetic division to show that x is a solution of the third-degree polynomial equation, and use the result to factor the polynomial completely. List all the real zeros of the function. x^3 - 28x - 48 = 0 x=2 I have no idea how to start this problem!!

How do I figure out what is greater 67.5% or 135/200 ? Thanks!

What are lke terms in formula

Answers

The following answers were posted by visitors named Kate.

Ok that looks wrong. 100g should be under solution for the mass, 18.02g/mol for the solvent of H2O and 85g/mol for the solute of NaNO3. I have to find mass of solute and solvent and the moles of solute and solvent. Pls help anyone!

Well there's serotonin, acetylcholine, norepinephrine and dopamine... An excess of dopamine is usually associated with schizophrenia. Serotonin and norepinephrine can be associated with depression. Norepinephrine is prevalent in the sympathetic nervous sy...

OMG i've made a mistake while typing: The question should be: The Beatles recorded together until 1970.

found by me on some website: 'five basic things to survive; food, water, fuel (for cooking and heating), clothing, and shelter. ' Lol i'd never said that it was fuel....

Begin by measuring the mass of the empty calorimeter and record the value. Next, add approximately 1-1.5 g of solid NaOH pellets and record the mass. Carefully grind up the pellets using a mortar and pestle. Then, transfer the ground up NaOH into the calo...

Part 2 Secure the stand and two clean burets. Using the funnel, fill one buret to the 0 mark with HCl. Rinse out the funnel thoroughly and carefully fill the other buret to the 0 mark with 2 M NaOH solution. Drain 25 mL of NaOH solution into the calorimet...

Yeah i meant -x^4

no i put it exactly how the paper has it log^1/8) and then it has x=-1 I do not understand how to do it at all.

Thank you for breaking this down for me!!

Thank you so much for the help

Is this correct? (755 mmHg)(400.0cm^3)/298 K = (P2)(50.0cm^3)/(358 k)

Okay... 1) 275 g NaCl ----> 4.71 mol NaCl 2) Next, 4.71 mol NaCl * 1Cl2/2 NaCl = 2.36 mol Cl 3) V= nRT/P v= (2.36 mol)(0.0821 L atm/K Mol)(313K)/687mmHg = 0.0883 L Final answer: v = 0.0883 L

So, if I convert mmHg to atm I get .904 atm. When I plug that into the equation, the final answer is 67.1 L?

mols HCl = 0.750 M x 0.025 L = 0.0186 mol M = 0.0186 mol/0.500 L = 0.0372 the answer is 0.0372 mol/l

Thank you, I made the change. My professor is very precise, so I'm glad you noticed that!

In the question above this one it says refer to a solubility chart, but my professor never taught us how to answer these questions while using a solubility chart so I have no idea what to do. I've tried going to his office hours for help, but he's only th...

So, for KCl, using the graph... T.....mass KCl/100 mL 10....30 20....32 or 33 30....35 40....38 50....41 60....44 70....46 80....49 90....52 or 53 100...56

I was thinking that if, for example, two different pressures were given, two different volumes were given, two different temperatures were given and only one mole, then you use P1V1/n1T1...etc to find the missing mole. But, if only one pressure, one volum...

Okay, good. I think I'm all set then. Thank you!

Yup! Thank you!

I just wanted to get these checked. I think 1 is b, 2 is a, 3 is d, 4 is c, 5 is e and 6 is a

Im doing homework on burning magnesium, so mp something simular to everyone else but heres some help:- the big of idea is like the particles reacting like magnesium and oxygen to form magnesium oxide, so the particles of both reactants (magnesium & oxygen...

1. j'ai un ordinateur. 2. vous n'avez pas de chaise. forms of avoir j'ai tu as il/elle a nous avons vous avez elles/ils ont

#1 I'm having trouble understanding why you say it is not a real arguement. Person A is stating that he saw Bob and person B is saying that person A really saw Frank. How is it possible for the two statements to both be true and thus inconsistent? #2. Can...

Can you explain that?

They are lines that run next to each other, but can go on forever and never meet or intersect.

what do you mean like an M and m candy

Well M and m are all diffrent colors and since all the m and m arent the same color it means there uniquine and people arnt all the same we are all unique do you get what i am saying

isnt a metaphoring comparing to things using like or as

you are as unique as an m and m You as sweet as an m an m

his fault like as in raising the taxes or distrapution

like how he says he wants to give the taxes or somthing like that to other people

I did not get the correct answer... Solve for MassSteel. Here is my work- masssteelx specific heat rod x (Tfinal-Tinitial) + massH2O x specific heat water x (Tfinal-Tinitial) = 0 MassSteel = -massH2O x specific heat water x (Tfinal-Tinitial)/ specific hea...

It worked!! Thanks so much for your help!

Yes, the 2nd reaction is the 1st reaction reversed. The book says when you have a reaction that is reversed, take the opposite sign of the ÄH... which should be -154 by that definition. I'm not sure if I am suppose to divide 154 by 2??

so what would the x-intercepts be? (SQRT3, SQRT-3) ?

I am having trouble with this also. I think my brain is stuck at this point. How do you find the article E-5.07. When I search that it brings up a ton of articles. Thanks so much!

A set of input values is sometimes referred to as the replacement set for the independent variables. Evaluate each function for the given replacement set. f(x)=3x-6;{-3.5,-1,1/4,2,11}

That not what I mean i mean in terms of friendship.

could you give me a summary of it?

how do you put the calculation on words?

Yes, 20/24. Makes sense. Thank you!

I'm not sure I understand.

So, 12 divided by 3, minus 6.4?

I understand now. I think our messages were overlapping. Thank you!

This is a right triangle. Therefore the Pythagorean Law applies. 150^2+300^2= Distance^2 22500+90000=D^2 112500=D^2 335.41=D Rounded to the nearest tenth, D=335.4 feet

SMALL-SAMPLE CONFIDENCE INTERVAL FOR A POPLATION MEAN 90% Confidence Interval = x-bar +/- 1.65 * s/SQRT(n) n = NUMBER OF SAMPLES [3] Cumulative Distribution Function Student's t distribution with 3 DF x P( X <= x ) 1.65 0.901247

x = r cos(45) ...(1) y = r sin(45) ...(2) Dividing (2) by (1): y / x = tan(45) = 1 y = x.

What are like terms

S = 11 + 18 + 27 + 38 + 51 + 65 + 82 + .........+Tn S = 11 + 18 + 27 + 38 + 51 + 65 + ................ + Tn --------------------------------------... 0 = 11 + (7 + 9 + 11 + 13 + ....(n-1).terms.................) - Tn 0 = 11 + (n - 1)/2 [14 + 2(n - 2)] = 1...

a polymer is a molecule with repeating units usually joined with covalent chemical bonds. 2 examples of naturally occurring polymers are proteins & starches.

I was thinking of things like Myspace and how putting your personal information out there can put your life in jeopardy. Also, if you save something to a hard drive on a computer open to other people, then anyone can see your information and do whatever t...

(x1 + x2)/2, y1 + y2)/2 = 3+9/2 = 12/2 = 6 -1+2/2 = 1/2 = .05 This is what I got for the mid point. is this correct? I got 6 for the first set of numbers, and .05 for the second. How do I determine the mid point?

I think I figured it out. The answer can contain a fraction along with whole numbers. So i guess the mid point would be (6,.05) correct?

oops I misplaced the decimal. So yea (6,0.5) is the solution I came up with.

Now I will work on the distance and slope parts. Hopefully they will be correct to!

Why would you say it was 4? This is what I thought to.

So I solve for a=J/v*s to get the current (4.5*10^2/1.5*120). I hope I got this right and thanks very much.

it tell me who is related to who

do they ofer scholarships and grants for them as well

Light blue flame inside a Dark blue flame

Are you sure that is 3rd grade? I am a 4th grader and I don't know any thing about it. ps. When you are done with homework go to clubpegiun. It is really cool.

since it is equal probability you do add all three values and divide by three to get your answer

> greater than < less than

where did you get 140 from?

Got it. Thank you very much

a train left podunk and traveled north at 75 km/h. two hours later, another train left podunk and travled in the same direction at 100 km/h. how many hours had the first train traveled when the second train overtook it? can someone help set this up?

its a great story. its not an essay.

a)The planes ands axes of symmetry go through the faces, edges, and vertices of the octahedrons. b)There are 13 planes and axes of symmetry 3 go through opposite faces, 4 go through opposite vertices, 6 go through the midpoints of opposite edges c)The sym...

It is a triangle. 9/3=3/1 which is a triangle.

A regular pentagon does not tessellate the plane if the vertices or edges do not meet. In tesselations all the edges and vertices meet.

just in general when I'm asked to sovle for X in a equation that is set to zero it's not really set to zero at all is it??? X^2 + 4X - 1 = 0 really what this is saying X^2 + 4X - 1 = dy right???

like i know i need the shares outstanding but am unsure of which one so could you please show me how to perform this calculation using the values on this website and what value exactly i'm suppose to use as there are many of the same name with like differ...

i meant that sant's final velocity will be zero when both their masses are the same by the way not both of them only santas will be zero when they have the same masses

this was the answer in the back book. I do not see how to get this though 5(x + 3)(x - 2)^2 (x + 1)

I'm wanting to take the arctan of this by the way can i simplify this or express this into more simpler terms

supposively the ansswer is 9.9 m/s and 4.9 m/s i do not see how to get these solutions

i did for some reason it changes it

well know it's posting it twice :O

Thanks for the help! And BTW, I am not switching my name.

Is C just 9.8 N

I like how Jishka adds random symbols to my posts lol awsome :O

yes, it does! Thank you!

wait no the answer is A how though?

what do you mean by newspaper's op ed page?

In the essay, I have to demonstrate that I recognize logical fallacies, but I don't understand how I can write that much about a message of somebody else when they have written so little. there's just nothing else to speak of, and I only have 500 words

that's helps a whole lot! thanks so much Ms Sue and Writeacher! :D