Thursday
April 24, 2014

Search: A sample of a gas (5.0 mol) at 1.0 atm is expanded at constant temperature from 10 L to 15 L. The final pressure is __________ atm.

Number of results: 14,368

AP Chemistry
A 1.00-L gas sample at 100C and 600 torr contains 50% helium and 50% xenon by mass. What are the partial pressures of the individual gas?
Wednesday, November 3, 2010 at 9:42pm by Anonymous

chem
What is the volume of 325 mL of a sample of gas at 51.0C and 710. mm Hg if the conditions are adjusted to STP? Assume the amount of gas is held constant.
Monday, November 29, 2010 at 6:53pm by Kate

chem
What is the volume of 325 mL of a sample of gas at 51.0C and 710. mm Hg if the conditions are adjusted to STP? Assume the amount of gas is held constant.
Monday, November 29, 2010 at 6:53pm by Kate

CHEMISTRY
A sample of gas in a balloon has an initial temperature of 28 and a volume of 1360 . If the temperature changes to 86, and there is no change of pressure or amount of gas, what is the new volume, , of the gas? Express the volume numerically in liters.
Monday, April 4, 2011 at 10:48pm by Anonymous

Chem
A sample of gas of mass 2.929 g occupies a volume of 426 mL at 0degree Cel and 1.00 atm pressure. What is the molecular weight of the gas? Thanks!
Tuesday, March 9, 2010 at 9:09am by Peter

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

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

Chem
A 4.96L sample of chlorine gas is contained in a poison control vessel at STP. Calculate the number of grams in this sample
Sunday, September 29, 2013 at 1:27pm by Joe

chem
A sample of nitrogen gas (N2) kept in a container of volume 13.3 L and at a temperature of 22.3C exerts a pressure of 1.1 atm. Calculate the number of grams of gas present.
Saturday, October 16, 2010 at 8:23pm by nicole

Chemistry
A sample of nitrogen gas (N2) kept in a container of volume 11.7 L and at a temperature of 23.3C exerts a pressure of 2.6 atm. Calculate the number of grams of gas present.
Monday, October 17, 2011 at 1:12am by Sven

Chemistry
An unknown gaseous hydrocarbon consists of 85.63% carbon by mass. A 0.335 g sample of the gas occupies a volume of 0.107 L at STP. What is the identity of the gas?
Wednesday, November 14, 2012 at 6:16pm by Sarah

chemistry
A sample of gas in a balloon has an initial temperature of 25\({\rm \, ^{\circ}C}\) and a volume of 1670\({\rm L}\) . If the temperature changes to 82\({\rm \, ^{\circ}C}\) , and there is no change of pressure or amount of gas, what is the new volume, \(\texttip{V_{\rm 2}}{V_2...
Tuesday, October 29, 2013 at 2:05pm by Abby

chemistry
the pressure exerted on a 240.ml sample of hydrogen gas at constant temerature is increased from 0.428 to 0.724.What will the final volume of the sample be?
Wednesday, October 20, 2010 at 8:08pm by shubreet

Chem
A 11.9-g sample of a gas has a volume of 5.25L at 30 degrees celsius and 762mm Hg. If 2.4g of the same gas is added to this constant 5.25-L volume and the temperature raised to 64 degrees celsius, what is the new gas pressure?
Tuesday, October 26, 2010 at 2:43pm by Lisa

Chemistry
If a gas at 1.2 atm of pressure and 22.0 degrees of Celsius occupies 0.350L, what pressure will hold the same sample of gas in a volume of 0.050L if the temperature of the gas increases 25 degrees of Celsius?
Tuesday, May 28, 2013 at 5:45am by Anonymous

Chemistry
If a gas at 1.2 atm of pressure and 22.0 degrees of Celsius occupies 0.350L, what pressure will hold the same sample of gas in a volume of 0.050L if the temperature of the gas increases 25 degrees of Celsius?
Tuesday, May 28, 2013 at 5:45am by Anonymous

chemistry
A 7.56-g sample of gas is in a balloon that has a volume of 10.5 L. Under an external pressure of 1.05 atm, the balloon expands to a volume of 15.00 L. Then the gas is heated from 0.00 degree C to 25 C. If the specific heat of the gas is 0.909 J/g*C, what are work, heat, and ...
Saturday, July 13, 2013 at 12:26pm by Devin

Chemistry
A sample of gas collected over water at 42 C occupies a volume of one liter. The wet gas has a pressure of 0.986 atm. The gas is dried, and the dry gas occupies 1.04 L with a pressure of 1.00 atm at 90 C. Using this information, calculate the vapor pressure of water at 42 C. ...
Thursday, October 14, 2010 at 9:35pm by Bree

Chemistry
Hi, I'm doing a chem lab of the Percent Composition of Potassium Chlorate-A Gas Law Experiment and we need to calculate the percent of KClO3 in the sample volumetrically and gravimetrically. I need help calculating the Volumetric percent of KClO3 in sample given the ...
Sunday, October 20, 2013 at 11:43pm by Katelyn

Chemistry
Can anyone just show me the steps and point me in the right direction??? A sample of oxygen gas has a volume of 8.00 L at 20.0 C and 700. torr. How many moles does the sample contain?
Wednesday, December 1, 2010 at 8:36am by Anonymous

ap chemistry
A sample of gas occupies 4 mL at STP. At what pressure would this sample occupy 500 mL if the temperature is changed to 525C? Answer in units of torr
Saturday, February 9, 2013 at 7:32pm by cheri

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

Chem
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 6635 J. What is the specific heat of the gas?
Sunday, October 6, 2013 at 9:19pm by James

Chem
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 6635 J. What is the specific heat of the gas?
Sunday, October 6, 2013 at 9:19pm by James

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

chemistry
A 0.0677 g sample of magnesium metal reacted with excess hydrochloric acid solution to produce 69.9 mL of hydrogen gas. The gas was collected over water at 21.0 C. The levels of water inside and outside the gas collecting tube are identical (meaning that the pressure exerted ...
Monday, July 8, 2013 at 10:28am by Janaiby

chem
A sample containing 6.40 g O2 gas has a volume of 15.0 L. Pressure and temperature remain constant. a. What is the new volume if 0.600 mole O2 gas is added? b. Oxygen is released until the volume is 12.0L. How many moles of O2 are removed? c. What is the volume after 7.50 g He...
Thursday, November 1, 2012 at 10:23am by tracy

Chemistry (URGENT)
A gas mixture with a total pressure of 770 contains each of the following gases at the indicated partial pressures: CO2 , 249mmHg ; , Ar 114mmHg ; and , O2 174mmHg . The mixture also contains helium gas. 1. What is the partial pressure of the helium gas? 2. What mass of helium...
Wednesday, December 15, 2010 at 9:58pm by Ashley

Chemistry
A sample of air contains 78.8% nitrogen, 20.94% oxygen, 0.05% carbon dioxide, and 0.930% argon by volume. How many molecules of each gas are present in 1.00 L of the sample at 35 degrees C and 1.00 atm?
Wednesday, July 14, 2010 at 10:19pm by Katie

Chemistry
Please let me know how I'm doing with the following chemistry problems. I appreciate your imput. Here's problem 1: A sample of Helium gas occupies a volume of 29.4mL AT 18deg.celcius. (a)Would the volume of this gas sample be doubled at 36deg.celcius? (b)At what temperature(...
Wednesday, November 24, 2010 at 12:41pm by Cliff

chem
At hihg temperatures Sodium chlorate decomposes to form Sodium Chloride and Oxygen gas. A 0.8765 gram sample of sodium chlorate was heated until the reaction ended when Oxygen gas production was ceased. The Oxygen gas collected over water occupied 57.2 ml at temperature of 295...
Sunday, March 16, 2008 at 4:00pm by Anonymous

Chemistry
Assume tat you have a sample of a gas in a cylinder with a movable piston at constant pressure. Determine the volume of the gas if the absolute temperature is decreased by twenty-five percent.
Sunday, August 28, 2011 at 12:39am by Devin Boutte

chemistry
A sample of gas is compressed from 13.57 L to 3.93 L using a constant external pressure of 2.91 atm. At the same time, 1,759 J of heat flows into the surroundings. What is the internal energy change for the gas?
Saturday, March 1, 2014 at 6:29pm by abby

Chemistry
When elemental sulfur,S8,is heated with AgF,a gas forms that contains only sulfur and fluorine. The following tests were done to characterize this gaseous product. *The density of the gas was found to be 0.807g/L at 152mmHg and 35 degrees celsius. *When the gas reacts with ...
Tuesday, November 10, 2009 at 12:58am by rasuka_geo

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

chemistry
A sample of argon gas occupies a volume of 950 mL at 25.0C. What volume will the gas occupy at 50.0C if the pressure remains constant?
Tuesday, March 16, 2010 at 10:31pm by catherine

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
A sample of argon gas occupies a volume of 950 mL at 25.0C. What volume will the gas occupy at 50.0C if the pressure remains constant?
Saturday, June 12, 2010 at 10:38pm by lara

chemistry
A sample of argon gas occupies a volume of 295ml at 36 C. What volume will the gas occupy at 55 assuming constant pressure?
Monday, May 30, 2011 at 4:55pm by Anonymous

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 sample of gas (26.1 g) initially at 3.00 atm was compressed from 21.00 L to 6.00 L at constant temperature. After the compression, the gas pressure was __________ atm.
Thursday, April 22, 2010 at 9:40am by Camarra

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

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
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
A sample of gas at 80C is cooled by 30 degrees until its final volume is 1.75 L. If the pressure remains constant, what was the initial volume of the gas.
Monday, November 14, 2011 at 12:14am by mary

chemistry
A sample of unknown gas weighs 2.96 g and occupies 750. mL at 760. mmHg and 100.C. What is the molar mass of the unknown gas?
Tuesday, March 20, 2012 at 12:48pm by bobby

chemistry
A sample of gas with a mass of 1.62 g occupies a volume of 941 mL at a pressure of 748 torr and a temperature of 20.0 C. What is the molar mass of the gas?
Thursday, July 26, 2012 at 7:56am by kris

chemistry
The volume of a gas at 23◦C and 0.13 atm is 73 mL. What volume will the same gas sample occupy at standard conditions? Answer in units of mL
Monday, February 11, 2013 at 10:39pm by Anonymous

Chemistry
A sample of oxygen gas occupies 500.0 mL at -185C and 75.0 cmHg. Calculate the temperature in C if the gas has a volume of 221.0 mL at a 55.0 cmHg.
Friday, February 14, 2014 at 6:10pm by Harry

chem
a sample of gas is compressed from 3.25 l to 1.20 l at constant temperature. if the pressure of this gas in the 3.25 l volume is 100.00 kpa, what will the pressure be at 1.20 l ?
Monday, April 5, 2010 at 7:59pm by hasan

chemistry
a 30. L sample of gas exerts 200. mm Hg pressure at 10 degrees C. What volume does the gas have at 300. mm Hg and 25 degrees C?
Thursday, November 11, 2010 at 10:55pm by kaitlin

chemistry
a 30. L sample of gas exerts 200. mm Hg pressure at 10 degrees C. What volume does the gas have at 300. mm Hg and 25 degrees C?
Friday, November 12, 2010 at 7:57pm by kaitlin

chemistry
The temperature of a 4.00 L sample of gas is changed from 10.0 C to 20.0 C. What will the volume of this gas be at the new temperature if the pressure is held constant?
Thursday, March 17, 2011 at 2:57pm by Samantha :)

chemistry
a 256 mL sample of an unknown gas was collected over water at 23 degrre celsius and 750 mmHg. the gas has a mass of 0.80 grams. what is the molar mass of the gas? (the vapor pressure of water at 23 degree celsius is 21.0 mmHg)
Monday, March 19, 2012 at 10:45am by Jesse

chemistry
An experiment shows that a 250mL gas sample has a mass of 0.433g at a pressure of 740 mmHg and a temperature of 29 C. What is the molar mass of the gas?
Monday, October 13, 2008 at 11:57am by Anonymous

Chemistry
A 12.7 L sample of gas is under a pressure of 740 mm Hg at 20degrees C. What will be the volume of the gas if the pressure increases to 1.00 atm and the temperature drops to 0 degrees C
Tuesday, January 20, 2009 at 4:43pm by Mary

Chemistry
a sample of gas is warmed from 15.o degrees celsius to 45.o celcius at a constant pressure. its initial volume is 1.75 liters. what is the final volume of gas?
Monday, May 3, 2010 at 1:06am by Adina

chem
A sample containing 7.60 gas has a volume of 31.0 . Pressure and temperature remain constant.What is the volume after 3.00 is added to the gas already in the container
Friday, October 29, 2010 at 4:10am by Anonymous

Chemistry
A sample of gas has a mass of 0.555 g. Its volume is 119 mL at a temperature of 90 degrees C and a pressure of 744 mmHg. What is the molar mass of the gas?
Thursday, November 18, 2010 at 11:36pm by Kelsey

chemistry
An experiment shows that a 111ml gas sample has a mass of 0.161g at a pressure of 725mmHG and a temperature of 36degrees C.What is the molar mass of the gas?
Saturday, April 28, 2012 at 1:00am by Jess

chemistry
A sample of gas has a mass of 0.555g . Its volume is 114L at a temperature of 80degrees C and a pressure of 744mmHg .Find the molar mass of the gas
Saturday, April 28, 2012 at 1:27am by Jess

Chem II
A sample of gas in a 25.0-L containter exerts a pressure of 3.20 atm. Calculate the pressure exerted by the gas if the volume is changed to 45.0-L at constant temperature.
Friday, October 12, 2012 at 4:09pm by Layney

chemistry
A sample containing 4.8g of O2 gas has a volume of 15.0L. Pressure and temperature remain constant. What is the new volume if 0.500 mole of O2 gas is added?
Friday, November 16, 2012 at 8:29pm by Boo Boo

chemistry
A sample containing 4.8 g of O2 gas has a volume of 15.0L. Pressure and temperature remain constant. What is the volume after 4.00g of He is added to the 4.8g of O2 gas in the container
Friday, November 16, 2012 at 8:55pm by Boo Boo

Chemistry
A sample of gas has a mass of 0.550g . Its volume is 111mL at a temperature of 75∘C and a pressure of 763mmHg . Find molar mass of gas
Sunday, April 6, 2014 at 9:54pm by Amy

Physical science
I need help with the gas laws (Boyle's, Charle's, Gay-Lussac's & the combined gas law). A sample of 6.00 liters of xenon is collected at 960 mm Hg and 50 degrees Celsius. What is the volume at STP?
Wednesday, May 11, 2011 at 8:20pm by Jacqueline

physics
A sample of monatomic gas (^ = 5/3) is expanded adiabatically from an initial temperature, volume, and pressure of 230. XC, 6.00 litres, and 5.00 kPa, respectively, to a final volume of 7.00 litres. (a) What is the final pressure of the gas? (b) How much work is done by the ...
Friday, April 30, 2010 at 6:57am by sarah

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
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

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

chemistry
The volume of a gas at 24C and 0.21 atm is 36 mL. What volume will the same gas sample occupy at standard conditions?
Wednesday, February 15, 2012 at 11:09pm by Daddy

Chemistry
A sample of CO2 gas in a syringe has a volume of 25.0 mL at 20.0 C. If you warm the gas in your hand to 37 C, what will be the final volume?
Thursday, October 25, 2012 at 2:28am by Jason

Chem II
A sample of gas at 38 degrees Celsius occupies a volume of 2.97 L and exerts a pressure of 3.14 atm. The gas is heated to 118 degrees Celsius and the volume decreased to 1.04 L. Determine the new pressure exerted by the gas.
Monday, October 15, 2012 at 7:02pm by Layn

chemistry
A sample of neon effuses from a container in 73 seconds. The same amount of an unknown noble gas requires 149 seconds. Identify the gas.
Thursday, October 16, 2008 at 2:14pm by nikki

chemistry
if you have a gas sample that has a mass of .993g occupying .570L. Given the temperature is 281K and the pressuere is 1.44 atm, what is the molar mass of the gas?
Thursday, May 12, 2011 at 10:14pm by Haleigh

Chemistry 105
An experiment shows that a 114 mL gas sample has a mass of 0.168 g at a pressure of 697mmHg and a temperature of 30 C. What is the molar mass of the gas? in g/mol
Sunday, October 23, 2011 at 5:44pm by JULIE

Chemistry
A sample of Argon gas at standard pressure occupies 1000 mL. At constant temperature, what volume does the gas occupy if the pressure increases to 800 mm Hg?
Sunday, November 13, 2011 at 9:10pm by Jessie

CHEM
A GAS TAKES UP 25.2 L AT 25*C. AT 25*c THE GAS CAN ALSO TAKE UP 12.2lAT 1520 TORR. WHAT WAS THE PRESSURE IN ATM, OF THE ORIGINAL SAMPLE? I GOT 4.1S ATM. IS THAT RIGHT?
Wednesday, August 1, 2012 at 7:17pm by liz

chemistry 1B
A sample of gas occupies a volume of 61.2 mL. As it expands, it does 133.9 J of work on its surroundings at a constant pressure of 783 torr. What is the final volume of the gas.
Friday, February 1, 2013 at 8:53pm by Anonymous

Chemistry
A 1.44-g sample of an unknown pure gas occupies a volume of 0.336 L at a pressure of 1.00 atm and a temperature of 100.0 degrees Celsius. What is the unknown gas?
Monday, March 4, 2013 at 1:44am by Lily

Chemistry
A 1.44-g sample of an unknown pure gas occupies a volume of 0.336 L at a pressure of 1.00 atm and a temperature of 100.0 degrees Celsius. What is the unknown gas?
Monday, March 4, 2013 at 1:53am by Lily

chemistry
a sample of argon gas at standard pressure ocupies 100ml. at constant temp, what volume does the gas occupy if the temp increases to 800mmHg
Thursday, April 25, 2013 at 1:01pm by Deveigh

Chemistry
A sample of neon effuses from a container in 80 seconds. The same amount of an unknown noble gas requires 163 seconds Identify the gas.
Saturday, August 10, 2013 at 12:20pm by Anonymous

Science
When elemental sulfur,S8,is heated with AgF,a gas forms that contains only sulfur and fluorine. The following tests were done to characterize this gaseous product. *The density of the gas was found to be 0.807g/L at 152mmHg and 35 degrees celsius. *When the gas reacts with ...
Tuesday, November 10, 2009 at 2:08pm by anonymous

chem 105
A gas mixture with a total pressure of 745mmHg contains each of the following gases at the indicated partial pressures: CO2, 257 mmHg; Ar, 123mmHg; and O2, 160 mmHg. The mixture also contains helium gas. What is the partial pressure of the helium gas? What mass of helium gas ...
Sunday, October 23, 2011 at 6:52pm by JULIE

chemistry
A gas mixture with a total pressure of 745mmHg contains each of the following gases at the indicated partial pressures: CO2, 257 mmHg; Ar, 123mmHg; and O2, 160 mmHg. The mixture also contains helium gas. What is the partial pressure of the helium gas? What mass of helium gas ...
Sunday, October 23, 2011 at 7:13pm by samantha(very important)

Chemistry 101
You have a sample of gas in a flask with a volume of 250 mL. At 25.5 degrees Celcius, the pressure of the gas is 300 mm Hg. If you decrease the temperture to -5.0 degrees celcius, what is the gas pressure at this lower temperture?
Thursday, April 30, 2009 at 10:19pm by Eunice

Chemistry
A 10.8g sample of a gas has a volume of 5.25L at 25 degrees Celsius and 766mmHg. If 2.3g of the same gas is added to this constant 5.25L volume and the temperature raised to 68 degrees Celsius, what is the new gas pressure?
Tuesday, January 18, 2011 at 7:09pm by Jen

chemistry
A 24L sample of a gas at fixed mass and constant temperature exerts a pressure of 3.0 atm. What pressure will the gas exert if the volume is changed to 16L?
Tuesday, March 16, 2010 at 10:24pm by catherine

chemistrty
A sample containing 7.20g O2 gas has a volume of 33.0L Pressure and temperature remain constant. What is the volume after 4.00g He is added to the O2 gas already in the container?
Friday, April 8, 2011 at 12:08am by nicole

chem
At 36.4C a sample of ammonia gas exerts a pressure of 6.8 atm. What is the pressure when the volume of the gas is reduced to one-fourth of the original value at the same temperature
Wednesday, June 29, 2011 at 12:46pm by Tim

Chemistry
At 36.4C a sample of ammonia gas exerts a pressure of 8.3 atm. What is the pressure when the volume of the gas is reduced to one-fourth of the original value at the same temperature.
Monday, October 17, 2011 at 1:12am by Sven

chemistry
A 200-mL sample of Oxygen gas is collected at 26 degrees C and a pressure of 690 torr. What volume will the gas occupy at STP (0 degree C and 760 torr)
Sunday, April 1, 2012 at 5:49pm by Kayla

Chemistry
a sample of hydrogen effuses through a porous container about 9 times faster than an unknown gas. Estimate the molar mass of the unknown gas.
Tuesday, January 22, 2013 at 6:12am by Anonymous

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