Search: Chemistry - Density

Number of results: 95,791

chemistry
Determine the density of each. density = mass/volume. The liquid with a density less than 1.00 (the density of water) will float.
Saturday, June 25, 2011 at 10:18pm by DrBob222

chemistry
Density of water: 1.0 g/mL Principle: If an objects density is greater than water density, it will sink in water. If an object's density is lower than water density, it will float in water. Now, what will the liquid do? (I think you can figure it out from what I said above...
Monday, September 1, 2008 at 12:55pm by ~christina~

chemistry
The general gas law equation, PV = nRT, can be modified for density, so that one can calculate density without actually going through n. P*molar mass = density*R*T. Remember T must be in K. Solve for density.
Wednesday, November 30, 2011 at 3:17pm by DrBob222

chemistry
I would look up the density of the solvents. I would assume a density of 1.00 g/cc for water since the problem specifies a dilute solution, then compare the density of the solvent with the density of water. Density greater than water the solvent sinks. Density lower than water...
Tuesday, September 23, 2008 at 5:25pm by DrBob222

chemistry
density = mass/volume Specific gravity is the same number (but no units) if you assume density of H2O = 1.00 g/mL. If you know the density of H2O at room T (I don't know what you're calling room T) then sp.g. = density substance @ T/density H2O at same T.
Sunday, September 9, 2012 at 11:25pm by DrBob222

Chemistry
I would calculate the density (density = mass/volume) and compare to the density of the four possibilities.
Saturday, November 20, 2010 at 7:34pm by DrBob222

Chemistry
You don't have enough information. You need the density of benzene, the density of CH3CN, and the density of the solution.
Tuesday, September 2, 2008 at 2:45pm by DrBob222

chemistry
given the density of helium is 0.1785g/cm3 and the density of argon is 1.784g/cm.3 estimate the density of neon
Sunday, October 28, 2012 at 4:14pm by Jessa

SCIENCE?CHEMISTRY***
The volumes are the same. Volume in mass divided by density. (mass/density) of mercury = (mass/density) of alcohol Alcohol mass = [(alcohol density)/(mercury density)]*(mecury mass) = (0.900/13.6)*20 = 1.324 g Rouded to two figures, that is 1.32 g
Friday, May 14, 2010 at 9:49pm by drwls

chemistry
Specific gravity (S.G.)=Density of acetic acid/density of H2O Solve for density of acetic acid. S.G.* density of H2O=density of acetic acid (0.1040*(0.9956 g/mL)=S.G.
Friday, February 1, 2013 at 1:55am by Devron

Chemistry
Density= Mass/vollume Density= 25.75g/25.00ml density =1.030g/ml
Monday, August 29, 2011 at 2:21am by Alison

Chemistry
I would subtract the density at 17 from the density at 18, take 0.3 of the difference, and add to the density at 18.
Sunday, March 13, 2011 at 2:55pm by DrBob222

Chemistry
If the column of water in the water barometer fore to a height of 35ft, what would the atmospheric pressure be in mm Hg? mmH20X(density of water/density of Hg)= mmHg Density of water=0.99707 Density Hg=13.5340
Friday, February 11, 2011 at 1:45am by Brian

Chemistry
Look up the density of water at 20C and the density of water at 25C. They are not the same. Knowing that mass = volume x density, then density = mass/volume. The volume you calculate for the flask will be different and that will cause the density of your determination to be ...
Tuesday, September 27, 2011 at 3:51pm by DrBob222

chemistry
actually, the specific gravity is the ratio of the density of oil to the density of water. Since the density of water is 1g/ml, the density of a substance is numerically the same as the specific gravity. However, specific gravity is a dimensionless number, while density has ...
Tuesday, February 19, 2013 at 2:34pm by Steve

Chemistry
PV=nRT n/V= mole density=P/RT mass/Volume=density=molmass*P/RT density= 28*Pressure/RT convert C to K
Thursday, March 25, 2010 at 10:17am by bobpursley

physics
Height will be proportional to g, and pressure, and inversely to density. Height=k g * P/density At Earth 2185mm=k g 101.3kPa/density at X 725mm=k *g/4 * PressureX/density Divide the top equation into the bottom.. 725/2185=1/4 * PressureX that gives you pressurex Now for ...
Tuesday, November 13, 2007 at 7:57pm by bobpursley

Chemistry
mass = volume x density. Substitute for mass and density; solve for volume. Make sure the units of density (you don't list that) agrees with the unit you want in the answer.
Sunday, September 23, 2012 at 12:37pm by DrBob222

Chemistry
same mass, so new density= old density/2.7 what is old density? You know pressure,volume, temp, find moles PV=nRT convert moles to grams.
Saturday, October 24, 2009 at 11:06pm by bobpursley

Chemistry
No, you want to use the density. mass = volume x density. You know the mass of water, you can look up the density at 22 degrees C, which leaves you with volume to calculate. Post your work if you get stuck.
Friday, September 26, 2008 at 8:02pm by DrBob222

Chemistry
The mass of the earth is known to be about 5.98 X10^24kg assume that it is approx. spherical with an average diameter of 1.276X10^7 METERS. from these data calculate the average density of the earth(g/cm^3) could the earth be made mostly of water (density=1.00g/cm^3), abundant...
Tuesday, August 30, 2011 at 3:35pm by ALISON

Chemistry
sp.g. = density alcohol/density H2O with both at the same temperature. If density of water is 1.0 g/mL, then sp.g. alcohol is 0.79 (with no units).
Tuesday, September 4, 2012 at 1:33am by DrBob222

Chemistry
Can you convert density to moles? I am given the density of a substance [0.789 g/mL] but I need to know the number of moles for the equation. You cannot convert density to moles, unless you also know the volume and the molecular formula. (density) * Volume = mass = (# of moles...
Thursday, December 28, 2006 at 8:12pm by Alexandria

chemistry
It isn't possible to calculate the theoretical molarity of vinegar without know the density. I tried looking up the density of vinegar on the net and found values all the way from 0.96 g/mL to 1.08 g/mL (and some said 5% by mass and other 5% by volume). 5% by mass vinegar ...
Sunday, June 6, 2010 at 3:42pm by DrBob222

chemistry
The thing you said about the volume of the container didn't make sense. So far, I only have the the density for H2O and Hg. So I couldn't put that the volume of the container was 454/13.6. Density over density?
Wednesday, April 7, 2010 at 8:06pm by Amy

physics
a) How far does it have to fall? Assume one meter. Don't forget there is a buoyancy effect. Net downward force is [1.05*density)*V - (density)*V]*g = M*a = (1.05)*density*a "density" is ambient density a = (0.05/1.05) g = 0.47 m/s^2 (1/2) a t^2 = 1 m when t^2 = (...
Sunday, May 8, 2011 at 11:28pm by drwls

chemistry
I would expect the density to become smaller. density = mass/volume. Upon heating, the volume of ethanol will expand somewhat but the mass will not change. A larger number in the denominator will make the density less.
Thursday, July 8, 2010 at 6:33am by DrBob222

Dobson
a)The element with the greatest density is osmium, which has a density of 22.6g/cm3. Calculate the mass of 32.1 cm3 of osmium. b)A team of students determined the density of a sample of wood to be 0.52 g/cm3. A handbook of chemistry reported the density of 0.548 g/cm3 for the ...
Friday, March 26, 2010 at 7:41pm by Anonymous

Chemistry
Convert 0.78 inches to ?cm. Then volume of the cube = (?cm)^3. density = mass/volume. You have mass and volume, solve for density. Then mass = volume x density. volume 25.0 cc. density from above.
Tuesday, September 18, 2012 at 5:48pm by DrBob222

science (density)
1) mass=100g, volume=10ml,density= 2) volume=7ml, mass=70g, density= 3) mass=50g, volume=10cm3, density= 4) volume=30cm3,mas=90g,density= 5) mass=120,volume=6ml,density= Thanks everyone i apresheate your help.
Thursday, October 9, 2008 at 4:37pm by Carly

physics
An object will float if its' density is less than the density of the fluid it is placed in. Density = 5.4g / 2.7cm^3 = 2g/cm^3. Density of water = 0.99g/cm^3. The object will not float , because its' density is greater than the density of water.
Tuesday, May 17, 2011 at 1:47pm by Henry

Chemistry
mass/volume=density volume=mass/density. but specific gravity and density are the same when compared to water, so volume=7.75kg/(1kg/liter)=7.75 liters.
Monday, September 20, 2010 at 9:45pm by bobpursley

Science-Chemistry
The idea in the first question is to reason through it. What do we know about mass, volume, density? Since mass = volume x density, then volume = mass/density; therefore, the highest density will be the smallest volume and the lowest density will have the largest volume. right...
Tuesday, April 27, 2010 at 11:59pm by DrBob222

Chemistry
neither. mass = volume x density or volume = mass/density. density = specific gravity here.
Monday, September 20, 2010 at 11:21pm by DrBob222

Chemistry
If the density of a substance is 15.2 g/mL, what is the density in cg/kl?
Saturday, December 31, 2011 at 3:25pm by Ben

chemistry
you use the density formula density=mass/volume and solve
Monday, August 29, 2011 at 10:37pm by Aidan

Chemistry
Mass = volume x density. The density of mercury is 13.6 g/mL.
Tuesday, September 21, 2010 at 7:06pm by DrBob222

chemistry
change specific gravity to density. Volume=mass/density
Sunday, May 11, 2008 at 10:12pm by bobpursley

chemistry
volume= mass/density You need units on your density term...
Tuesday, September 18, 2007 at 4:32pm by bobpursley

Chemistry
But that one was density of solution, but this problem is density of water so is that different???
Friday, February 15, 2013 at 6:44pm by K

chemistry
mass = volume x density. Substitute and solve for density.
Monday, December 10, 2012 at 10:01am by DrBob222

Chemistry
Is that a DENSITY of 1.5 g/cc. Use mass = volume x density
Wednesday, February 15, 2012 at 1:12pm by DrBob222

Chemistry
mass = volume x density. Substitute and solve for density.
Wednesday, December 7, 2011 at 11:29am by DrBob222

chemistry
mass = volume x density Substitute and solve for density
Wednesday, October 12, 2011 at 1:42am by DrBob222

Chemistry
P*molar mass = density*RT Solve for density.
Wednesday, October 27, 2010 at 10:12pm by DrBob222

Crime scene chemistry
Is that density? If so, then you would expect the density of the plastic to decrease.
Wednesday, March 28, 2012 at 7:50pm by DrBob222

chemistry
because the mass and volume lowered. It was not squished to make density increase. Density= m/v
Monday, December 3, 2007 at 7:31pm by Anonymous

Chemistry
Density = Mass / Volume Multiplying both sides by bolume, Volume x Density = Mass Dividing both sides by density, Volume = Mass / Density V = 24 g / 12 g/mL = ____?
Sunday, February 15, 2009 at 6:33pm by GK

Chemistry II
correction to the formula of density. density is equal to the ratio mass and volume, that is d=m/v m=d*v
Sunday, September 27, 2009 at 10:49pm by MarJaldrin

chemistry
volume = mass/density I assume that the units of the density of acetone are g cm^-3.
Friday, January 21, 2011 at 2:39am by Dr Russ

chemistry
Figure the density first: 25.68g/1cm^3 then mass=density(volume)
Saturday, April 10, 2010 at 3:12am by bobpursley

CHEMISTRY
You don't have the density, do you? The density given is that of a liquid.
Sunday, January 20, 2008 at 6:06pm by DrBob222

Chemistry
Compare the density of this car with the density of gold.
Thursday, September 20, 2007 at 9:06pm by bobpursley

chemistry
Didn't I do this for you last night? P*molar mass = density*RT Substitute for Ar and conditions and solve for density. Then use the same formula and the density you calculated for Ar, substitute and solve for P for Ne.
Monday, November 5, 2012 at 11:34pm by DrBob222

chemistry - density and error (check)
Calculate the density of earth and the density error. i got the answer 5.57*10^3k +/- 9.60 *10^7kg/m is that the correct answer? please help
Monday, January 24, 2011 at 7:43am by Farah

chemistry - density and error (check)
The units are a little strange, I would expect kg m^-3 or g cm^-3. The density of the earth is ca 5.5 g cm^-3 or 5.5 x10^3 kg m^-3. The error in the density will depend on how you calculated it.
Monday, January 24, 2011 at 7:43am by Dr Russ

chemistry
Density = Mass / Volume ...(1) mass = 84.7 g volume = 49.6 cm³ Density = ? g/cm³ Part 2: From (1), we have volume = mass / density Use mass = 7.75g and density calculated above.
Wednesday, September 22, 2010 at 6:02pm by MathMate

Chemistry
It could a number of things only known to your teacher and/or the author of the printed instructions for the lab. It sounds like an experiment to determine the density of a material. When you measure the mass and the volume of an object, you have the data needed to calculate ...
Wednesday, September 2, 2009 at 4:51pm by GK

college chemistry
I bet if it didn't have the density, it had the specific gravity. You can use that to determine the density.
Tuesday, March 19, 2013 at 9:33pm by Devron

chemistry
Answers for copper has a density of 8.92g/cm3 and nickel has a density of 8.90 . which one is denser
Thursday, November 4, 2010 at 5:17pm by Anonymous

chemistry
Surely you mean Al has a density of 2.7 g/cc. mass = volume x density. You have mass and density, substitute and solve for volume. That's the amount that the water level will rise when the chunk of Al is placed in the graduated cylinder.
Thursday, June 7, 2012 at 6:42pm by DrBob222

chemistry
mass = volume x density Substitute and solve for the one unknown. The density of water is 1.00 g/mL
Tuesday, January 31, 2012 at 11:51am by DrBob222

chemistry
I use a modified form of the gas equation. P*molar mass = density(in g/L)*R*T Substitute and solve for density.
Tuesday, November 16, 2010 at 11:09pm by DrBob222

ChEMISTRY (Help please)
What are the units for density? While you're at it check that problem again. I can't believe the density is that high in g/mL.
Tuesday, April 13, 2010 at 8:02pm by DrBob222

chemistry conversion
sorry, just realized i left the density out. The density is 1.049 g/mL. This should help. Thanks.
Thursday, January 31, 2008 at 5:45pm by stew

Chemistry
What's the density? mass = volume x density.
Thursday, September 20, 2012 at 10:38pm by DrBob222

Chemistry Concept
As you point out, the question is silly. The density of rust is less than the density of iron, so for the same mass, rust has more volume. example: The density of sulfur is 2.07g/cm^3. The density of sulfur dioxide is .0014 g/cm^3. what happened to the volume as sulfur burned...
Saturday, January 24, 2009 at 3:59am by bobpursley

Chemistry
The density of H2O is about 1.00 g/mL. Many organic solvents have a density less than that; hence they float.
Wednesday, November 16, 2011 at 11:14am by DrBob222

Chemistry
The gas law equation of PV = nRT can be re-written as P*molar mass = density*R*T Substitute and solve for density.
Tuesday, November 9, 2010 at 5:06pm by DrBob222

Chemistry
a) The element with the greatest density is osmium, which has a density of 22.6g/cm3. calculate the mass of 32.1 cm3 of osmium. Answer: 22.6g x 32.1 = 725.46 Did I have right answer? b) A team of students determined the density of a sample of wood to be 0.52g/cm3. A handbook ...
Friday, April 2, 2010 at 8:09am by Anonymous

General Chemistry (Chem101)
density of mixture is .4137*2.0514 + .5863*2.6678 = 2.413g/mL so, the density of the object is the same
Thursday, September 20, 2012 at 12:22pm by Steve

chemistry
Convert a density of 2.74 x 103 g/L into a density with dimensions of kg/mL. please show how would this conversion be done.??
Monday, September 6, 2010 at 6:19pm by Jack

chemistry
a chemist needs 2.00 grams of a liquid compound witha density of 0.785 g/cm^3 density. what volume of compund is required?
Wednesday, February 1, 2012 at 2:25pm by victoria

Science (Chemistry)
The Average density of Earth is 5.52g/cm^3. What is its density in a. kg/m^3 b. lb/ft^3. Please help me set up these equations. Thank you!
Monday, June 13, 2011 at 4:16pm by Grace

Chemistry
for #1, we have to find the density first right? so density is mass/volume, so from there you take 381.676 and divide that by.. and thats where im lost :(
Wednesday, April 6, 2011 at 11:46pm by Shannon

chemistry
silver has density of 10.5 g/cm3 and gold has a density of 193.g/cm3 which liquid is denser silver and gold are liquids? That's news to me. You're given the ratios for density, which ratio is greater 10.5gm/cm^3 or 193gm/cm^3? It appears gold is over 18 times as dense ...
Sunday, September 10, 2006 at 5:57pm by delonte

Chemistry
The population of San Francisco is 750,000 in an area of 49 square miles. What is the population density in San Francisco? Express your answer in people per acre. ( 1mi(squared) = 640 acres ) 49 sq mi x (640 acres/1 sq mi) =?? acres. (Note that sq mi cancels leaving acres.) ...
Wednesday, September 13, 2006 at 6:25pm by Jamie

Physics
All you need to answer that is the amount submerged in water, and the density of water. According to Archimedes Principle: (Water density) * 0.68 V = (wood density)* V Cancel out the V and use the density of water 1.00 g/cm^3 * 0.68 = wood density
Tuesday, November 17, 2009 at 12:44am by drwls

Chemistry
A bottle that holds 250 grams of water holds only 175 grams of gasoline. What is the density of the gasoline? Take the density of water to be 1.0 g/ml mass = volume x density. Rearrange to find volume = mass/density volume of the bottle = 250/1.00 = ?? Now that you know the ...
Thursday, February 15, 2007 at 6:00pm by Sarah

chemistry
one mole of a gas occupies 27.0 liters, and its density is 1.41g/l at a particular temperature and pressure. what is its molecular weight? What is the density at STP?
Sunday, June 28, 2009 at 8:59pm by Bobby

Physics
The density of the sphere is 1/2 of the density of water. But when oil is added to the water, the resulting solution has a density twice that of water. So the new density ratio is 1/4.
Sunday, May 6, 2012 at 12:08am by Henry

Chemistry
I apologize. Specific gravity has no units; I inadvertently read it as density. My error. Since no temperature is specified, we must assume specific gravity to be the same as density; therefore, density = 1.1088 g/mL. 1.0 kg ethylene glycol = 1,000 grams. mass = volume x ...
Monday, September 13, 2010 at 10:17pm by DrBob222

science
Find the Density, which is equal to mass/volume, and use the equation density of the block/ density of water. If the density of the block is lower than water, then it will float, if not then it will sink or be submerged. To calculate the density of the block take the weight ...
Thursday, January 17, 2013 at 9:15pm by Devron

chemistry
water has a density of 1g/cm3 ; if 2 different pieces of the wood are put into water which will float and which will sink ? Wood 'a' has a density of 1.19g cm3 Wood "b" has a density of .67 g/cm3 Explain your answer?
Sunday, August 19, 2012 at 8:40pm by maria

Chemistry
2.70 g/mL is the correct value for density. The specific gravity is NOT 0.135 for two reasons: 1. specific gravity is the same as density if the water had a density of 1.00 g/mL. 2. specific gravity has no units.
Saturday, September 18, 2010 at 8:25pm by DrBob222

science
Personally, I don't think using density as a guide for buying cereal is worth the time it takes to estimate the density. Cereal is sold by the weight, not density. It may be true that cereal with a high density makes one feel full where a lower density cereal doesn't. ...
Saturday, January 9, 2010 at 1:11pm by DrBob222

chemistry
I don't know how you obtained 6.8 g. The part about the density: The problem asks for VOLUME of ethanol to add to make ?? soln of ??M. mass = volume x density You calculate mass from above, substitute density here of 0.789, and solve for volume (in mL). Then convert to L. ...
Friday, February 12, 2010 at 8:22pm by DrBob222

physical science
Calculate the density of the object. density = mass/volume. You have the mass, the volume of a cube is side^3 so that is 5^3 or 125 cm^3. If the density is greater than the density of water it will sink; otherwise, it will float.
Wednesday, April 15, 2009 at 8:00pm by DrBob222

Chemistry
2NaN3 ==> 2Na + 3N2 Use the density of nitrogen to convert 70 L(needed to fill the air bag) to grams. mass = volume x density
Saturday, January 9, 2010 at 10:55pm by DrBob222

chemisrty
can anybody give me the density of arsenic oxide at STP is this the correct formula volume = mass/ density thanks Yes, but if you want the density, it is density = mass/volume. The number I have seen floating around on this board is 17.8 g/L but the density of a gas and the ...
Sunday, February 4, 2007 at 2:34pm by bex

Chemistry
They both sink (density greater than 1 g/cc), so the one with the greatest volume will displace more water. They each have the same mass, so the one with less density has more volume. The one with less density is aluminum.
Monday, January 19, 2009 at 3:17pm by Damon

chemistry
Specific gravity has no units but the s.g. is the same as the density if the measurement is made against water with a density of 1.00 g/cc. Therefore, the oil you looked up has a mass of 0.93 g/cc when compared to water at a density of 1.00 g/cc. Thus it is lighter than water ...
Tuesday, February 16, 2010 at 3:33pm by DrBob222

Chemistry II
The molar mass of acetone is correct. Here is what you do. Convert density acetone and density ethyl alcohol (together with volume) to grams, density = mass x volume. mass = density/volume. You are given the density of each and the volume of each. Determine mass of each. Next...
Sunday, September 27, 2009 at 10:49pm by DrBob222

chemistry
If I correct the typos to make the problem read Calculate the density of CH4 gas at 0C and 700 mm Hg pressure. The reworked universal gas law of PV = nRT becomes P*molar mass = density*RT P is 700/760 T is 273K for 0C. R is 0.08206 L*atm/mol*K M = 16 Solve for density.
Sunday, January 15, 2012 at 9:26am by DrBob222

physics
NOTE: Do = Density of object(ice). Df = Density of fluid. Db = Density of bear.
Thursday, February 9, 2012 at 9:06am by Henry

science/math please help
density = mass/volume density = 500 / 250 density = 2 g/mL
Tuesday, August 23, 2011 at 1:53am by Jai

Chemistry
Why did you need to know the density of the bleach solution? Why didn't you measure the density of h2o2 solution as well? Stoichiometry lab problem
Sunday, October 28, 2012 at 10:56pm by HELP PLEASE

chemistry
A piece of copper wire has a density of 8.9 g/cm3. What is the density of a chunk of copper that has a mass of 250 grams?
Saturday, June 25, 2011 at 10:18pm by Madison

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