Ana

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

Questions

The following questions were asked by visitors named Ana.

How do I figure out what element is it describibg if I am given the temperature the pressure and the g/L.

If two molecules have the same temperature does it affect their average velocity depending on how heavy the molecules are or not?

For instance, money can help us have a more comfortable lifestyle, but if we do not have the inventors, the producers, servers, and etc., the money we make would be pointless. Is there a period after etc?

When a gas gets cold, what does it become? A solid or liquid?

What is the control of an experiment in Biology?

discuss the general concept of freedom of speech and its general limitations

Ethical considerations for communicators

Are black bears and white bears the same species? why or why not?

A rectangular plot of land is 4 meters longer than it is wide. It's surrounded by a multicolored walk 1 m wide. The area of the walk is 32 m. What are the dimensions of the pool?

In a raffle, the prizes that can be won are as follows: 25 gift certificates to a restaurant, 15 cash prizes, and 1 car. There are 500 tickets purchased for the raffle. What is the probability that he owner of a ticket will win a cash prize, given that th...

A colony of germs grows exponentially. It starts at 500 germs. After 8 minutes there are 600 germs. When will there be 1000 germs?

Help me understand Decimals place value

limit of ((sin 3x)/x) as x approaches 0

what is subjective complement is in the nominative?

What were some reform proposals and major political developments during the Gilded Age?

5x . y ___ ___ 3y2 15

A 1.80-cm-thick wood floor covers a 4.0 m times 5.5 m room. The subfloor on which the flooring sits is at a temperature of 16.1C, while the air in the room is at 19.2 C. What is the rate of heat conduction through the floor? Use 0.200 W/m* K for the therm...

0.75 mol of argon gas is admitted to an evacuated 40 cm^{3} container at 40 C. The gas then undergoes an isochoric heating to a temperature of 500 C. What is the final pressure of the gas?(answer in kPa)

0.75 mol of argon gas is admitted to an evacuated 40 cm^{3} container at 40 C. The gas then undergoes an isochoric heating to a temperature of 500 C. Before I forgot to write the question...so the question is What is the final pressure of the gas? * physi...

70 J of work are done on the gas in the process shown in the figure. What is V_f in cm^3 ? I have a graph but I can't post it here. My values are W=70J P=200kPa which is 200000Pa I used the formula W=P(deltaV) then to get deltaV you do: deltaV= W(P) so i...

I have to write an essay on the topic below...would you be able to help me find some sites for it. Thanks "Discuss the role of ancient Greek mythology as evidenced through its art"

It's time to plant a spring vegetable garden 1/3 will be root plants, 1/3 will be stalk plants, and 1/3 will be vine plants. 1/2 of the stalk and vine plants will be grown organically without fertilizer. What fraction of the garden will be grown organical...

A train is traveling down a straight track at 22 m/s when the engineer applies the brakes, resulting in an acceleration of -1.0 m/s2 as long as the train is in motion. How far does the train move during a 40 s time interval starting at the instant the bra...

John had some animals. One-fourth were horses, one-half were cows, and the rest were pigs. He had 8 pigs. How many animals did he have altogether?

Four out of five dentist surveyed chose sugarless gum for their patients. If 1000 dentist were surveyed, how many recommended sugarless gum?

Fe2O3 + 2Al --> 2Fe + Al2O3 How many grams of Fe will form when 97.6g Al2O3 form? Please & Thank you

I got 206.67 g Fe, DrBob222

How do you simplify n^3 ÷ n^╥ (pi=╥) Answer: Please & Thank you

4.905t^2 + 2.93t - 10 = 0 I have to solve for t. How do I solve this equation step by step? Thanks.

How many molecules of BrF2 form when 384g Br2 react with excess F2? equation: Br2 + 5F2 ---> 2BrF5 I really just need the guidelines to figure out the problem, i can figure out the rest from there. Please and thank you.

How would I solve the equation: log(base2)4 - log(base2)(x+3) = log(base2)8 ? i think i have to start by doing 4/(x+3)=8

solve the equation: log(base2)^(x-3)log(base2)^5 = 2log(base2)^10 I don't know how to solve it, can someone help me? Please and thank you.

98N-T=10a T-18.89N=3a I worked on the problem and I end up getting two equations but now I have to find T and a. For some reason, I cant solve it. Thanks

how do i solve these two problems? 3log(base5)^(x^2+9)-6 = 0 log(base8)^(n-3) + log(base8)^n+4)= 1 can you tell me step by step as well as the answers? please and thank you

i don't know how to do this problem. i keep getting stuck. can anyone help me? Solve: log(base8)^(n-3) + log(base8)^n+4)= 1

Can someone help me? I'm really confused. The loudness L of a sound in decibels is given by L= 10log(base10)R, where R is the sound's relative intensity. If the intensity of a certain sound is tripled, by how many decibels does the sound increase?

The left side of the heart pumps the same volume of blood as the right. True or False I believe it is False

2KClO3 --> 2KCl + 3O2 What mass of O2 can be made from heating 125 g of KClO3? I know that the answer is 49 g O2 but I keep getting a completely different answer, can anyone show me what I'm doing wrong? Please & Thank you

2KClO3 --> 2KCl + 3O2 What mass of O2 can be made from heating 125 g of KClO3? I know that the answer is 49 g O2 but I keep getting a completely different answer, can anyone show me what I'm doing wrong? 125g KClO3 x (2 mol KClO3/ 122.49g KClO3) = 2.04 mo...

Br2 + 5F2 --> 2BrF5 How many molecules Br2 react with 1.11 x 10^20 molecules F2? I got 2.21 x 10^47 but I feel that's too big and is most likely wrong. Can someone help me?

In chemistry, for a given substance what information links mass to moles? number of particles to moles?

What counts as a conversion factor ?

Why do we need to use amount in moles to solve stoichiometry problems? Why can't I just convert from mass to mass? I'm not sure how to answer. I think I know the answer and just can't formulate it into words.

Two shuffleboard disks of equal mass, one orange and the other yellow, are involved in a perfectly elastic glancing collision. The yellow disk is initially at rest and is struck by the orange disk moving initially to the right at 5.60 m/s. After the colli...

Calculate the magnitude of the linear momentum for the following cases. the Earth (mass = 5.98*1024 kg) moving with an orbital speed equal to 2.98*10^4 m/s. so i did 5.98*10^24 times 2.98*10^4=1.78204 × 10^29 But homework website doesn't accept this answe...

Can zinc (Zn) react with one of these: Al(NO3)3 aluminum nitrate Mg(NO3)2 magnesium nitrate Zn(NO3)2 zinc nitrate Cu(NO3)2 copper nitrate?

How do I distinguish between the limiting reactant and excess reactant in a chemical equation?

I have a prompt for an English essay and it says, "In a well developed composition, identify the character, describe what the character questions about society, and explain why the character's questioning is important to the meaning of literature." It's s...

Solve: e^4x = 120 I did ln4x = ln 120 divided both sides by ln 4 and got 3.4534. Is this correct?

e^x-2 + 4 = 21 I got .8332, is this correct?

I don't know if I did this equation right.. ln 6x (greater than or = to) 4 I got 9.0997

I'm trying to solve 2e^(3x) + 5 = 2 but it's not working put well. Help please, someone?

In a long composition, when you write the paragraph that's supposed to "identify the character" what is it supposed to say? their personality or their struggles or the basics of their life in the book?

2e^x - 3 =1 I got x= .6931 is this right?

In stoichiometry, chemists are mainly concerned with a. types of bonds found in compounds b. energy changes occuring in chemical reactions c. mass relationships in chemical reactions d. speed with which chemical reactions occur i thought c?

Carbon Dating: Use the formula y= ae^-.00012t where a is the initial amount of carbon-14 , t is the number of years ago the animal lived, and y is the remaining amount after t years how old is a fossil remain that has lost 95% of its carbon-14

A synchronous satellite, which always remains above the same point on a planet's equator, is put in orbit around Neptune so that scientists can study a surface feature. Neptune rotates once every 16.1 h. Use the data of Table 13.2 to find the altitude of...

A massless spring of constant k = 88.9 N/m is fixed on the left side of a level track. A block of mass m = 0.50 kg is pressed against the spring and compresses it a distance of d. The block (initially at rest) is then released and travels toward a circula...

The maximum lift force on a bat is proportional to the square of its flying speed v. For the hoary bat (Lasiurus cinereus), the magnitude of the lift force is given by FL (0.020 N·s2/m2)v2 The bat can fly in a horizontal circle by "banking" its wings at a...

A satellite of mass 220 kg is launched from a site on Earth's equator into an orbit at 200 km above the surface of Earth. (a) Assuming a circular orbit, what is the orbital period of this satellite? 5310 s (b) What is the satellite's speed in its orbit? 7...

How do you balance this equation? Zn(s) + HNO3(aq)--> Zn(NO3)2(aq) + N2O(g) + H2O(l)

what does "explain why this character's ... is significant to the meaning of the work of literature" mean?

The SI temperature unit is Celsius? A kelvin is the same temperature interval as a degree______? A temperature difference taken between two objects has ______numerical value in Kelvins and in degrees Celsius. I don't know what to write for the last 2. I'm...

Four objects - a hoop, a solid cylinder, a solid sphere, and a thin, spherical shell - each has a mass of 4.59 kg and a radius of 0.252 m. (a) Find the moment of inertia for each object as it rotates about the axes shown in the table above. hoop____ kg·m2...

A 0.006-kg bullet traveling horizontally with a speed of 1.00 103 m/s enters an 21.1-kg door, imbedding itself 10.4 cm from the side opposite the hinges as in the figure below. The 1.00-m-wide door is free to swing on its hinges. (c) At what angular speed...

A 600 N uniform rectangular sign 4.00 m wide and 3.00 m high is suspended from a horizontal, 6.00-m-long, uniform, 90-N rod. The left end the rod is supported by a hinge and the right end is supported by a thin cable making a 30.0° angle with the vertical...

What are the molar heat capacities of: H2O(l) NaCl and Tungsten? I got 75.32 J/K*mol 50 J/K*mol 24.8 J/K*mol

Calculate the enthalpy change for the following equation: NO(g)+ 1/2O2(g) -----> NO2(g) I have no clue how to do this. I just know the answer is supposed to be approximately -57.2 kJ. Can some explain to me what to do?

Calculate the total amount (in moles) of Ca and Mg present in a sample of water that required 12.86 ml of 0.0005M EDTA solution to completely complex them.

According to this chemical reaction, which is the number of grams of Fe produce from 14 moles of H2?

cordyline terminails is the botanical name of the

According to the kinetic-molecular theory, gases are highly compressible because the particles of they consist: a. lose energy when they collide with each other b. are very apart from each other c. experience a strong force of attraction d. experience a s...

In thermodynamics, the standard pressure is 100 kPa. What is this value in units of atmospheres. I got 9.86x10^-7 atm but the book said .9869 atm. who's right?

Tetraphosphorus trisulphide (P4S3) is used in the match heads of some matches. It is produced in the reaction 8P4+3S8 --> 8P4S3. Determine which of the following statements are incorrect, and rewrite the incorrect statements to make them correct. a. 4 mol...

We're going to read a book about people with electroshock therapy (ECT). I am doing a short presentation on it, but on what it was like in the 1950s. I just need to know a little more about ECT and how the mentally ill were viewed and treated back then?

How do I find the first five terms of each sequence? a(1)=3, a(n+1)=a(n)+5 The things in the parentheses are subscripts.

If the measure of an exterior angle of a triangle is 75 degrees, then what are the measures of the two remote interior angles?

a room is 18 feet long and 14 feet wide with walls 10 feet high. If one can of paint covers 450 square feet, how many cans of paint would be needed in order to paint the four walls?

what is the laboratory procedure for separating two volatile liquids?

Get Rich Quick Investments LTD offers 2 investment schemes. Scheme 1: Earn 6.5% interest per year, compounded monthly. Scheme 2: Earn 6.45% interest per year, compounded daily. An investor reasons that Scheme 2 should be the best because its interest rate...

We did a lab on iodine sublimation. I don't really understand what is going on so can someone clarify it for me? My teacher also told me that there was deposition, was it that the crystal like substances appeared on the beaker or that the iodine was colle...

Can someone try this out so I can see if I'm correct? An 870 g river water sample contains 2 mg of cadmium. Express the concentration in parts per million. I got 2.30 ppm.

Classify the following mixtures as homogenous(H) or heterogenous(HT): a.lemon juice-H (I'm guessing there's no pulp) b.tap water - H c.blood- HT d.house paint- H I'm not sure about a and D

how do i Write an expanded expression for the volume of the cube with a side length of 3x+2 cm.

An excess of zinc is added to 125 mL of 0.100 M HCl solution, What mass of zinc chloride is formed? Zn + 2HCl ----> ZnCl2 + H2

Yellow CdS pigment is prepared by reacting ammonium sulfide with cadmium nitrate. What mass of CdS can be prepared by mixing 2.50 L of a 1.25 M Cd(NO3)2 solution with an excess of (NH4)2S? Cd(NO3)2 + (NH4)2S ---> CdS + 2NH4NO3 Could someone give me a step...

I have these two questions on my section review that I don't know how to answer. Can someone help me? Please and thank you. 3. Describe in your own words how to prepare 100 mL of a .85 M solution of sodium chloride. 4. If you dissolve 2.00 mol KI in 1.00...

If 0.125 L of a 0.100 M solution of Ba(OH02 are mixed with 0.200 L of a 0.0750 M solution of H3PO4, the following reaction takes place. 3Ba(OH)2 + 2H3PO4 ---> Ba3(PO4)2 + 6H2O What mass of barium phosphate is formed? I got 2.51 g Ba3(PO4)2, is that correc...

I don't understand how to do this problem. You mix 1.00 L of 2.00 M BaCl2 with 1.00 L of 2.00 M AgNO3. What compounds remain in the solution, and what are their concentrations? BaCl2 + 2AgNO3 ---> 2AgCl + Ba(NO3)2 Is it trying to trick me with the two set...

Regarding previous post: I don't understand what I'm doing. My book says the answer is .50 M Ba(NO3)2 but I'm not getting that.

What other artists use a style similar to M.C. Escher and his patterns?

Whether A dissolves in B depends on a [imbalance, balance] between favorable entropy and favorable enthalpy. One of the two phrases in the brackets is correct, I don't know which it is. Can someone tell me and explain why? Please and thank you.

Dilution calculation: use the formula M1V1=M2V2 How many milliliters of 12 M HCl would be needed to make 200 mL of a 1.0 M HCl solution? I got 16.67 mL HCl for this part but there's a secondary question. It says: How much water would be used to make this...

An equilibrium mixture at 852 K is found to contain 3.61 x 10^ - 3 mol/L SO3. Calculate the equililbrium , constant , keq for the reaction where SO2 an O2 are reactants and SO3 is the produce.

How do I draw the diagram/graph for this problem? Find the exact values of the six trigonometric functions of theta if the terminal side of theta in standard position contains the point (0,-4)

Are the answers to these correct? Use log(base12)3= 0.4421 and log(base12)7= 0.7831. log(base12)36 = log(base12)3^2*4= 4.8842 log(base12)27/49 = -0.2399 log(base12)81/49 = 0.2022 log(base12)16,807 = 3.9155 (16,807= 7^5) log(base12)441 = 2.4504 (441= 7^2*3...

So I have to write an English essay on Richard Wright's Black Boy. And the topic I got was to "discuss moral themes throughout the text." and I'm not sure how to go about writing it. Since it says discuss does that mean I'm not allowed to analyze it? Or y...

How do I solve tan of theta * cot of theta? I got 1. Is that right?

Answers

The following answers were posted by visitors named Ana.

una means one in a female verse by the a in the end, so instead of saying un mesa the correct way is una mesa.La means "the" also in a female verse. Ex. The correct way of use is La casa instead of El casa. Hope this help you if not, write specifically wh...

1 atmosphere= 101.325 kilopascals 1 dm^3= 1 Liter

That they are the same?

I do not know if it is a gas it just says to find what element is it and I am only given 1000 celsius, 10 torr, and the density of .0029 g/L.

You have to use the FOIL rule that stands for first,outer, inner and last. So look at the two equatons: (4x-7)(x+11) Firt stands for the multiplication of 4x and x in which are the first number of the equation,next outer means that you now multiply the ou...

By cooking with steam intead of frying baking may also woork on the oven

NO SE USA SABIDA SINO CONOCIDA

Where did you get the x-2?

what's the cash debt coverage

so is it p*40=.75*r*(40-500),right? what is r?

ok...now tired P=(0.75)*(8.31)*(773-313)/(4*10^-5)=106373 106373/1000=106.37kPa..still wrong

These site are very helpful and thanks again.

Hi i am doing the research paper for hit 105 research project as well, but I don't know how to cite the information, could you please give an idea. thank you

I see my mistakes but the homework site doesn't accept 800m.

I was able to find out the angle which is 57.83degree that is correct. For the speed, i used sqrt(2*9.81*50)=31.32, is this correct because the hw site doesn't accept it. What am I missing? Thanks.

NO, it is Anatomy & Physiology.

I didn't abbreviated when i posted the questions, but still i haven't received response

ok. i got that. thanks for your help. :-)

I could've solve it if it didn't have decimal. I'd be appreciate if you could solve it form me. Thanks

98N-T=10a T-18.89N=3a I worked on the problem and I end up getting two equations but now I have to find T and a. For some reason, I cant solve it. Thanks

Nevermind i figure it out

this is exactly what my homework sheet says. this is not teacher made, it's from the book. 2log(base2)^10 = log(base2)^10^2 = log(base2)^100

That's what I meant, thank you for you help DrBob222

i believe it's changes in temperature. you can heat it to turn it into a gas, freeze it to turn it into a solid and heat the solid to turn it into a liquid.

how'd you get the log(base5)^(x^2+9) = 2 ?

I very much remember being taught last year that they did drop the bomb. I think it was in 1945, they dropped it on Hiroshima..

wait, where'd the 4.77 come from?

After Japanese leaders flatly rejected the Potsdam Declaration, President Truman authorized use of the atomic bomb anytime after August 3, 1945. On the clear morning of August 6, the first atomic bomb, nicknamed Little Boy, was dropped on the city of Hiro...

you have to flip slope and change the sign. and then change the 6 to a 2 so that the line will cross at (0,2)

I meant is is True.

475342. it's the 7 i think

your dad is right. x = -1

4x+8=4 -8 -8 4x=-4 -4/4 = -1

what was the soldiers' fate?

125g KClO3 x (2 mol KClO3/ 122.49g KClO3) = 2.04 mol KClO3 2.04 mol KClO3 x (3 mol O2/1 mol KClO3) =6.12 mol O2 6.12 mol O2 x(31.98g O2/1 mol O2) = 195.71 g O2

I don't think there is one

here's the formula SA = pr^2 + prL

oh i see it, thanks ms. sue i learned something new today :)

are asking how to answer the problem?

i redid my work and got 2.21 x 10^19 molecules Br2. I don't know if that's right either, it seems a tad high.

2.22 x 10^19 molecules Br2

Thank you DrBob222

Thanks. I thought that's what it was, I just needed reassurance.

So zinc will only react with copper nitrate out of all of those?

Make the denominators the same 6/8 + 5/8 over 6/8 - 4/8

6/8 + 5/8 = 11/8 6/8 - 4/8 = 2/8 (11/8) / (2/8) = 11/8 * 8/2 =11/2

I believe you're right

Oh, i subtracted 2 instead of adding it, thank you.

I think it'd be just 6, I'm pretty sure..sort of.

I believe the two numbers would have to be the same distance from 90 on either side. Like 89 90 91 . 90 is the median Like 89.5 90 90.5 . 90 is still the median

turn 4/6 into 2/3. then add the two. you get 4/3

I inserted 6.2E7 and i also try to do 62000000 but it says the same thing. How else can I insert my answer?

I appreciate who ever is helping me out, but again I tried 6.15E7 and 5.88E7 still it isn't working out. I can only insert answer two times after that it wont work. I don't know what else I can do

the mass and radius were given by professor so I just followed that. maybe you are right. thanks anyway

again, I appreciate your work but site doesn't accept this answer. I don't know why this is occurring for all the problems that I'm working on.

i tried to insert .6447721757 and the site says round-off error.

thank you so much for your detail work

how do i get small r?

is it R_e + height?

(6.67E-11*220*5.98E24)/(6.38E6+2.0E5)-(6.38E6)= 1.33295653E10J Is this right? I want to make sure if this is right before I insert into the site.

44.5 d^2=4.6mg d^2=(4.6*.5*9.81)/(44.5)=0.507033708 d=0.712062994m Is this right? I have only one chance to insert the answer so i want to make sure.

What do you mean?

so is it 6770873457?

this is my last try....is it 6904053501?

Yes, we are. Some of the problems are very difficult but thank you so much for your help. I really appreciate.

use variables to make an equation that will help you. W= wrist 6+W is the number of fingers bones W is the number of Wrist bones W-3 is the number of palm bones 27=(6+W) + W +(W-3) 27= 3w+3 24=3w w=8 (6+8)= 14 finger bones 8 is the number of wrist bones 2

I figure it out

I'm sorry I meant I cant figure out part D.

It wouldn't allows me to submit picture

sign is away from wall

It did work. thank you so much

Okay thank you, I was close.

12 or 24. I think

why is it 101.325?

Oh never mind. I found my mistake. I multiplied by 1000 instead of dividing.