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April 19, 2014

Search: gas

Number of results: 9,559

ap chemistry
The volume of 0.100 mol of helium gas at 34C is increased isothermally from 1.00 L to 4.50 L. Assuming the gas to be ideal, calculate the entropy change for the process.
Friday, April 12, 2013 at 10:07am by sarah

physics/chemistry(kinetic ..gasses)
How many degreed of freedom have the gas molecules,if under standard conditions the gas dendity is 1.3kg/m^3 and velocity of sound propagation on it is v=330m/s?
Monday, May 13, 2013 at 10:58am by duke

chemistry
A chemical reaction produced a 0.311 g sample of gas which occupied 225 mL at 55 C exerting a pressure of 886 mm Hg. What is the molar mass of the gas?
Sunday, August 4, 2013 at 11:19am by JScholz

chemistry
A chemical reaction produced a 0.311 g sample of gas which occupied 225 mL at 55 C exerting a pressure of 886 mm Hg. What is the molar mass of the gas?
Sunday, August 4, 2013 at 11:22am by JScholz

Physics
A sample of a monatomic ideal gas is originally at 20 C. Calculate its final temperature of the gas if the pressure is doubled and volume is reduced to one-fourth its initial value.
Tuesday, October 15, 2013 at 4:46am by nbi

Physics
A sample of a monatomic ideal gas is originally at 20 C. Calculate its final temperature of the gas if the pressure is doubled and volume is reduced to one-fourth its initial value.
Tuesday, October 15, 2013 at 5:44am by Anon

science
A gas occupying 43 mL at standard conditions is heated to 29 celsius while the pressure is reduced to 0.84091 atm. What is the new volume occupied by the gas?
Sunday, March 9, 2014 at 2:24pm by perla

Chemistry
The reaction between 32.0g of CH4 and excess oxygen gas produces 75.9 of CO2 gas and some water. Determine the percent yield? Plss help :((
Wednesday, March 12, 2014 at 1:46pm by juju

science
Marlene's car won't start. She wonders if she is out of gas. She checks the gas gauge and sees that the car has gas. Then she wonders if the battery is dead. She checks the battery and discovers that it is dead. Marlene conclude that her car battery is dead. Accoring to the ...
Monday, September 6, 2010 at 10:44am by ant

Chemistry
Graham's Law predicts that the ratio of the rate of effusion of gas X to the rate of gas Y equals the square root of the INVERTED ratio of their molar masses: Rate of X/Rate of Y = SQRT(My/Mx) What is the ratio of rate of effusion of Helium to Nitrogen gas? Enter your answer ...
Sunday, October 28, 2012 at 8:20pm by Anonymous

Chemistry 101
Iron reacts with hydrochloric acid to produce iron (2) chloride and hydrogen gas.Fe (s)+ 2 HCL (aq) -FeCl2 (aq) + H2 (g).The hydrogen gas from the reaction 2.2g of iron with excess acid is collected in a 10L flask at 25 degrees celcius. What is the pressure of the hydrogen gas...
Thursday, April 30, 2009 at 10:29pm by Eunice

Chemistry
You have 1L of an ideal gas at 0 degree celsius and 10 atm pressure. You allow the gas to expand against a constant external pressure of 1 atm, while the temperature remains constant. Assuming, 101.3 J/liter-atm, find q,w,delta E, and delta H in Joules, A) if the expansion ...
Friday, November 25, 2011 at 12:11pm by John

science- I need help!
1. How do you know when something is gas? 2. What is gas made of? [I think it's molecules and atoms?] 3. How do you know when something is matter? [I believe that when something has a mass and volume..its matter. Is that correct? 4. Is gas matter? [This question got me ...
Wednesday, January 23, 2008 at 8:03pm by Jeanine

Physics
Imagine you've finished this academic year and gone home to enjoy your summer vacation. During one of your days of relaxation and non-academic bliss, however, you realize you need to run a few errands. After stopping at the gas station where you fill the gas tank to its ...
Tuesday, November 16, 2010 at 8:17pm by Need Help

Chemistry
You should get a second opinion on these answers but here is my reasoning. Check my thinking. a. Four moles goes to two moles. I think S decreases. b. Both Mg and MgO are crystalline solids. About the same. CO and CO2 both gases. About the same at the same T. So S is about ...
Saturday, November 28, 2009 at 8:14pm by DrBob222

Chemistry
Hold the test tube with open end on the bottom and closed end on top. A gas more dense than air will "fall out" of the open end and snuff out a flame. A gas lighter than air (less dense than air) will stay in the tube. On the other hand, placing the open end up and the closed ...
Sunday, October 21, 2007 at 1:30pm by DrBob222

Science: Chemistry
Can the Law of Conservation of Mass be applied to a chemical reaction in which a gas is produced? Yes. THe gas has mass.
Monday, April 23, 2007 at 9:31pm by Need Help

physics
True/False The thermal energy of the particles in a gas is related to the temperatureof the gas. answer:true
Thursday, April 3, 2008 at 5:07pm by Jon

Chemistry
The volume of a gas with a pressure of 1.2 atm increases from 1.0 L to 4.0 L. What is the final pressure of the gas, assuming constant temperature?
Thursday, August 28, 2008 at 10:09pm by Soojung

chemistry
A 1.20-L container contains 1.10 g of unknown gas at STP.What is the molecular weight of the unknown gas?
Saturday, November 13, 2010 at 8:06am by pam

biology
Nitrogen gas is the most abundant gas in the atmosphere. Why is it not useful to most organisms in its atmospheric state?
Wednesday, January 12, 2011 at 9:12pm by pkd

chemistry
If the gas could took a hemispherical shape, what circular surface area would the gas cover? chemistry
Thursday, May 26, 2011 at 1:21am by John

chemistry
Pressure of a sample of 45 L of gas is increased and the gas goes from 100 kPa to 125 kPa
Sunday, August 14, 2011 at 10:02pm by ven

science
hellium gas is added to a balloon already partially filled with helium gas.why does the balloon inflate?
Sunday, August 21, 2011 at 12:57pm by cham

Science
Helium gas is added to a ballon already partially filled with helium gas the balloon inflated because the
Sunday, February 5, 2012 at 9:34pm by Star

Chemistry
If the pressure of 2.50ml gas were doubled from 0.500atm to 1.00atm what would be the gas volumn at the new pressure?
Tuesday, September 4, 2012 at 3:17pm by Barbara

math
if a car averages 11 1/8 miles to a gallon of gas, how many miles can it travel on 18 gallons of gas?
Wednesday, January 22, 2014 at 4:23pm by Anonymous

Physics
The Effect of Temperature on Gas Behavior Procedure 1. Chose any gas from the list box. Gas, Temperature (K), Most Probable Particle Speed (m/s), Average Particle Speed (m/s) 2. Set temperature to any value. Observe the shape of the frequency distribution of speeds graph. ...
Thursday, July 19, 2012 at 5:07pm by Alfrieda

Chemistry
What are the differences between "wet gases" and "dry gases?" Wet gas - contains H2O whereas Dry gas - does not contain H2O? Dry gas only contain Hydrogen?
Monday, September 5, 2011 at 1:23am by Lee

Chemistry
How many gas particles occupy a volume of 22.4 L at standard temperature and pressure? One mole of gas particles.
Saturday, February 3, 2007 at 7:46pm by Bryan

chem
How many moles of water are produced when 1.05 g of oxygen gas reacts with 1.22 g of hydrogen gas to produce water?
Sunday, March 9, 2008 at 4:10pm by megan

physics repost
True/False The thermal energy of the particles in a gas is related to the temperatureof the gas. answer:true
Friday, April 4, 2008 at 12:06pm by Jon

chemistry
If 4 moles of gas are added to a container that already holds 1 mole of gas, how will the pressure change inside the container?
Thursday, August 7, 2008 at 11:26am by natasha

College Chemistry
Calculate temperature when 0.50L sample or gas at 1.0 atm and 25degrees C is compressed to 0.05L of gas at 5.0 atm.
Saturday, July 25, 2009 at 4:46pm by Gayla

physics
An ideal gas in a container is at a temperature of 76.3C. What is the average translational kinetic energy of a gas molecule in the container?
Wednesday, December 2, 2009 at 8:25pm by Kim

chemistry
a gas is collected over water at 18 degrees celsius at a pressure 755mm. what is the partial pressure of the gas?
Tuesday, March 23, 2010 at 12:04am by finn

chemistry
a gas is collected over water at 18 degrees celsius at a pressure 755mm. what is the partial pressure of the gas?
Tuesday, March 23, 2010 at 5:32pm by finn

chemistry
A sample of helium gas has a volume of 325L at 25C and at 5atm. At what temperature the gas can be compressed at 50atm to a volume of 125L?
Friday, March 11, 2011 at 1:18pm by n/a

Chemistry 105
Use the molar volume of a gas at STP to calculate the density (in g/L ) of carbon dioxide gas at STP.
Sunday, October 23, 2011 at 5:36pm by JULIE

chemistry
A syringe containing 1.50 mL of oxygen gas is cooled from 92.3C to 0.0C. What is the final volume of oxygen gas?
Sunday, October 30, 2011 at 8:29pm by Anonymous

chemistry
A 42.3-L volume of methane gas is heated from 25C to 76C at constant pressure. What is the final volume of the gas?
Thursday, November 10, 2011 at 7:35pm by li

chemistry
A sample of gas has an initial volume of 2.80 L at 755 torr. If the volume of the gas is increased to 3.70 L, what will the pressure be?
Monday, December 5, 2011 at 11:46am by Anonymous

chemistry
A sample of gas has an initial volume of 2.80 L at 755 torr. If the volume of the gas is increased to 3.70 L, what will the pressure be?
Monday, December 5, 2011 at 1:38pm by Anonymous

physics
A gas expands at constant pressure from 6.25 L at 13.1C until the volume is 7.25 L. What is the final temperature (in K) of the gas?
Sunday, January 1, 2012 at 12:25pm by maria

Physics
The density of a gas at s.t.p is 1.3kg/m3. Find the density of the gas at -15 degree celcius and at a pressure of 8cmHg.
Wednesday, January 30, 2013 at 9:57pm by Esther

Science(IPC)
1.00 L of a gas at standard temperature and pressure is compressed to 473 ML. what is the new pressure of the gas?
Tuesday, December 3, 2013 at 8:24pm by Elizabeth

math
Anna uses 5/6 tank of gas each week driving to work . How many tanks of gas does Anna use in 1 2/3 months.
Monday, March 24, 2014 at 4:22pm by kenny

physics
Hi, could anyone help me please, Thank. Gas in a container is at a pressure of 1.3 atm and a volume of 1.0 m3. (a) What is the work done on the gas if it expands at constant pressure to twice its initial volume? (b) What is the work done on the gas if it is compressed at ...
Sunday, December 6, 2009 at 11:06pm by Chan

physics
Hi!could anyone help me please, Thank. Gas in a container is at a pressure of 1.3 atm and a volume of 1.0 m3. (a) What is the work done on the gas if it expands at constant pressure to twice its initial volume? (b) What is the work done on the gas if it is compressed at ...
Monday, December 7, 2009 at 4:21pm by Chan

chemistry
A container holds 1.00 mol O2, and the pressure in the container is 2.00 atm. A student adds 60.0 g of gas Y to the container. The total pressure (of O2 and gas Y) is 3.00 atm. What is the molar mass of gas Y? (V and T constant)
Monday, March 21, 2011 at 11:40pm by Kamila

chemistry
what is the difference between the combined gas law and the ideal gas law? are they the same thing?
Monday, March 2, 2009 at 7:25pm by kayla

chemistry
At STP, 412 ml of gas have a mass of 2.60 g. What is the molar mass of gas?
Sunday, March 28, 2010 at 9:06pm by Peggy

IPC
What is the change of phase from a solid to a gas? I know, liquid to gas is evaporation. So what if it skips the liquid part? Help?
Tuesday, October 19, 2010 at 11:37am by Kaitlin

Chemistry
At STP, 461 mL of a gas have a mass of 1.88 g. What is the molar mass of the gas?
Wednesday, July 13, 2011 at 1:21am by Bradley

chemistry
You have a 1 L container of a gas O 2 at 20C and 1 atm. Subtracting the weight of the container, what is the mass of the gas?
Friday, April 6, 2012 at 6:08pm by david

chemistry
You have a 1 L container of a gas O 2 at 20C and 1 atm. Subtracting the weight of the container, what is the mass of the gas?
Monday, April 9, 2012 at 9:05pm by sam

Science
How many grams of oxygen gas would be needed to react with 75 grams of hydrogen gas
Tuesday, January 8, 2013 at 6:08pm by Tammy

chemistry
if 40.0 g of methane gas reacts with 40.0 g of oxygen gas whis it the limiting reactant
Tuesday, January 22, 2013 at 12:45am by Athena

Chemistry
Solid phosphorus pentachloride yields phosphorus trichloride gas plus chlorine gas.
Monday, February 17, 2014 at 1:21am by DrBob222

Chemistry
Answer check: I got 1.66 x 10^3 g O2 A steel cylinder contains 98.0 moles of oxygen gas at a temperature of 38 degrees C and a pressure of 740 torr. After some of the oxygen gas has been used, the pressure is reduced to 332 toor at a temperature of 24 degrees C. What mass of ...
Monday, September 5, 2011 at 1:31am by Lola

Science
When you have H2 gas in a tube and you test it, you usually ignite the H2 gas with a flame. The reaction is 2H2 + O2 ==> 2H2O. I expect that you SEE no H2O because the combustion gives a gas (steam) and you don't see that. But it's there. Perhaps if you cooled the tube ...
Sunday, February 16, 2014 at 7:19pm by DrBob222

Algebra
Did I do thes right? 1. Suppose you are at the gas station filling your tank with gas. The function C(g) represents the cost C of filling up the gas tank with g gallons. Given the equation: a) What does the number 3.03 represent? The cost for one gallon of gas. 3.03(g) b) Find...
Saturday, February 28, 2009 at 8:38am by A.W.

chemistry
Phosphorus trichloride gas and chlorine gas reacts to form phosphorus pentachloride gas: PCL3(g) +CL2(g) = PCL5(g). A vessel is CHARGED WITH A MIXTURE OF PCL3(g) and CL2(g), which is allowed to equilibrate at 450K. At equlibrium the partial pressures of the three gases are ...
Wednesday, October 19, 2011 at 3:23pm by MIndy

Chemistry
Please write the balanced chemical equation for reaction the following chemical reaction ozone gas, O3, reacts with 3,3,4,4,5,5-hexanmethyl-1-hexyne, H-C≡C-C(CH3)2-C(CH3)2-C(CH3)2-CH3 to produce carbon dioxide gas, CO2 , and water gas, H2O When balancing the equation , ...
Thursday, November 8, 2012 at 7:32pm by Amanda

chemistry
Carbon monoxide gas and hydrogen gas are mixed in a two liter flask. The reaction produces methanol gas as the only product. At equilibrium the Keq is 1.1 x 10-5. The flask initially held 6 grams of hydrogen and the equilibrium concentration of hydrogen is 0.1 M. How many ...
Monday, March 12, 2012 at 8:25am by Don

Chem
at a pressure of 780mm Hg and 24.2 c,a certian gas has a volume of 350.0 mL .what will the volume of this gas under STP.
Saturday, September 30, 2006 at 2:17pm by sal

chemistry
IT is a gas. Use the ideal gas law PV=nRt molar density is n/v, which you can find Then convert that to mass density.
Tuesday, January 6, 2009 at 2:34am by bobpursley

physics
An ideal gas in a container is at a temperature of 76.3C. What is the average translational kinetic energy of a gas molecule in the container? _________J
Monday, November 30, 2009 at 8:46pm by Kim

Chemistry
A gas occupies a volume of 140 mL at 35 degrees celsius and 97 kPa. What is the volume of the gas at STP?
Monday, February 22, 2010 at 7:13pm by Bob

Chemistry
A sample of gas exerts a pressure of 5.12 atm. What is the pressure of this gas expressed in torr? (3 significant figures, n.nnEn)
Saturday, March 27, 2010 at 9:30pm by Monica

CHEMISTRY
What do we assume about the volume of the actual molecules themselves in a sample of gas, compared to the bulk volume of the gas overall? Why?
Tuesday, May 18, 2010 at 3:13pm by werwer

Physics
If a balloon is filled with helium gas of molar mass 4x10^-3, at a pressure of 1*10^5, What is the number of moles of gas in the balloon?
Wednesday, October 27, 2010 at 9:35am by George

Science HELP!
If a balloon is filled with helium gas of molar mass 4x10^-3, at a pressure of 1*10^5, What is the number of moles of gas in the balloon?
Wednesday, October 27, 2010 at 11:01am by George

chemistry
The volume of a gas at 20 C and 0.4 atm is 10 mL. What volume will the same gas sample occupy at standard conditions?
Tuesday, February 8, 2011 at 12:33am by pablo

chemistry
A sample of helium gas has a volume of 325l at 25c and at 5atm. At what temperature the gas can be compressed at 50atm to a volume of 125L?
Wednesday, February 9, 2011 at 1:31pm by twynna

chemistry
A sample of helium gas has a volume of 325L at 25C and at 5atm. At what temperature the gas can be compressed at 50atm to a volume of 125L?
Sunday, February 13, 2011 at 9:11am by twynna

chemistry
A sample of helium gas has a volume of 325L at 25C and at 5atm. At what temperature the gas can be compressed at 50atm to a volume of 125L?
Sunday, February 20, 2011 at 9:55am by twynna

chemistry
A sample of helium gas has a volume of 325L at 25C and at 5atm. At what temperature the gas can be compressed at 50atm to a volume of 125L?
Thursday, March 10, 2011 at 6:02pm by twynna

Chemistry 111
How many moles of methane are produced when 8206 moles of carbon dioxide gas react with excess hydrogen gas?
Thursday, July 14, 2011 at 5:02pm by angel

chemistry
If 48.3 g of an unknown gas occupies 10.0 L at 40 degrees celsius and 3.10 atm, what is the molar mass of the gas?
Friday, April 13, 2012 at 11:17pm by cheryl

chemistry
if 48.3 g of an unknown gas occupies 10.0 L at 40 degrees celsius and 3.10 atm, what is the molar mass of the gas?
Friday, April 20, 2012 at 1:00pm by sherly

Physics
a colloid is solid particles dispersed in water a suspension where the particles settle out a gas I say gas, am I right?
Thursday, September 27, 2012 at 2:00pm by randomchik

Science
What is the final pressure of the gas relative to its initial pressure when there is an increase in Kelvin temperature of a cylinder of compressed gas by a factor of 2.7?
Tuesday, October 9, 2012 at 1:39pm by Patrick

UT
At STP a sample of neon gas occupies 502 cm3. How many moles of neon gas does this represent? answer in mols
Wednesday, November 7, 2012 at 11:46pm by Stephanie

chemistry
A gas is collected over water at 20 degrees Celsius at a pressure of 752 mm. What is the pressure of the pure gas?
Thursday, November 29, 2012 at 11:28am by Jill

honors chemistry
Ammonia gas and hydrogen chloride gas from solid ammonium chloride. NH3(g),HCl(g) Balanced Equation:
Wednesday, January 9, 2013 at 12:46pm by thad

chemistry
A gas is stored in a 3.5L container at 15 degrees celsius and 655mmHg. Calculate the number of moles of the gas in the container
Tuesday, April 30, 2013 at 10:17am by Anonymous

chemistry
A gas is stored in a 3.5L container at 15 degrees celsius and 655mmHg. Calculate the number of moles of the gas in the container
Tuesday, April 30, 2013 at 10:17am by Anonymous

English
1. Put the vegetable mix on the gas stove. 2. Put the vegetable mix over the gas stove. 3. Put the vegetable mix on the gas range. 4. Put the vegetable mix over the gas range. (Which ones are grammatical? Which preposition do I have to use?)
Friday, May 8, 2009 at 12:13am by John

chemistry
1. what gas law does the nitric oxide relate to and why? (**charles law, boyles law, combined gas or gay-lusaacs law) 2. What gas law does nitrogen monoxide relate to? (**charles law, boyles law, combined gas or gay-lusaacs law)
Monday, October 4, 2010 at 7:52pm by navroz

Chemistry
Using the reaction below, calculate how many grams of bromine gas are necessary to produce 1.00mL of hydrogen bromide gas at STP. H`2 + Br`2 -> 2 HBr where `2 is a subscript two.
Monday, March 10, 2008 at 7:20pm by Dean

chemistry
An unknown quantity of gas at a pressure of 121.59 kPa, a volume of 31 L, and a temperature of 360 K contains how many moles of gas? Round to the nearest hundredth. Don't forget the units.
Monday, September 6, 2010 at 2:47pm by janay

Physics Help
0.30 mol of argon gas is admitted to an evacuated 50cm^3 container at 20 C. The gas then undergoes an isobaric heating to a temperature of 340C. What is the set up for this? I can plug in the values
Monday, August 15, 2011 at 10:09pm by Lizzie

chemistry
what is the universal gas constant( the R, in the equation PV=nRT) of this question? What is the pressure in a 10.0-L cylinder filled with 0.470 mol of nitrogen gas at a temperature of 329 K?
Sunday, October 23, 2011 at 7:23pm by samantha(very important)

Chem 101
A 5.00 liter sample of gas measured at 27 degrees Celcius and 1.25 atm of pressure has a mass of 10.13 grams. What is the molecular weight of the gas in u?
Wednesday, November 30, 2011 at 9:43pm by Joni

physics
The volume of an ideal gas is increased form 0.8m to 2.4m while maintaining a constant pressure of 1000Pa (1Pa = 1N/m ). How much work must be done by the gas in this expansion?
Wednesday, April 25, 2012 at 11:56pm by Zion

chemistry
An 80.0-gram sample of a gas was heated from 25 C to 225 C. During this process, 346 J of work was done by the system and its internal energy increased by 8905 J. What is the specific heat of the gas?
Thursday, June 21, 2012 at 9:02pm by cassie

thermodynamics and kinetics
One mole of an ideal gas undergoes an isothermal reversible expansion, doing 1 kJ of work and doubling the volume. What is its final temperature? How much heat was added to the gas?
Friday, October 12, 2012 at 1:36pm by Dorota

physics
An astronaut has a mass of 100 kg. She recedes from her spacecraft using spurts of gas from a small unit on her back. If the force generated by the gas spurt is 50 N, calculate her acceleration.
Wednesday, February 6, 2013 at 9:52pm by tash

physics
An astronaut has a mass of 100 kg. She recedes from her spacecraft using spurts of gas from a small unit on her back. If the force generated by the gas spurt is 50 N, calculate her acceleration.
Wednesday, February 6, 2013 at 11:12pm by tash

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