Sunday
April 20, 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: 19,299

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
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

Chemistry
a sample of helium gas has a volume of 1.25L at -125celcius and 50.0atm. the gas is compressed at 50.0 atm to volume of 325ml. what is the final temperature of the helium gas in Celcius
Monday, April 8, 2013 at 8:37pm by Mckee

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
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

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
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
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

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
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

chemistry
A 4.70 g sample of a certain gas occupies 530. mL at STP. What mass of the same gas is present in a 1.15 L container at 40.5C and 785 mm Hg?
Thursday, April 10, 2014 at 8:29pm by jack

Physics
A sealed container of volume 0.10 m3 holds a sample of 3.0 x 10^24 atoms of helium gas in equilibrium. The distribution of speeds of helium atoms shows a peak at 1100 ms-1. Caluculate the temperature and pressure of the helium gas. (helium atom 4.0 amu) How do I calculate the ...
Monday, May 19, 2008 at 8:57am by Oli

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
Most natural gas consists of about 90% methane, CH4. Assume that the solubility of natural gas at 20 C and 1 atm gas pressure is about the same as that of CH4, 0.02 g/kg water. If a sample of natural gas under a pressure of 20 atm is kept in contact with 1.00 *10^3 kg of water...
Monday, March 8, 2010 at 1:54am by david

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
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

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
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

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 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
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

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
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

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
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
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 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

Chemistry
if pressure on a 2.50 ml gas sample were doubled from 0.500atm to 1.00 atm what would be gas volume at the new pressure?
Wednesday, September 2, 2009 at 4:37pm by david

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
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

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

chemistry
It takes 19.6 mins for a 10.0mL sample of an unknown gas to effuse through a pinhole. A 10.0mL sample of He, required 5.05mins. What is the molar mass of the unknown gas? I got that you have to do : effuse rate of He/Effuse rate of Mx = Square root of (Mx/MHe) but then im ...
Monday, February 24, 2014 at 9:44pm by jin

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
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 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 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
(Ideal Gas Law) Calculate the volume of a 0.25 mole sample of gas at 25.0 degreeC and a pressure of 1.50 atm (R= 0.0821)
Tuesday, March 19, 2013 at 8:57am by JOY

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 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

Chemistry
A sample of argon gas at STP occupies 56.2 liters. Find the number of moles of argon and the mass in the sample
Saturday, April 27, 2013 at 9:39am by Emily

chemistry (charles law)
A 4.0L sample of methane gas is collected at 30.0 celcius .predict the volume of the sample at 0 celcius.
Sunday, April 28, 2013 at 1:05pm by ty

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 gas is in a 50.0mL container at a pressure of 86 kPa and a temperature of 25C. The entire sample is heated to a temperature of 35C and transferred to a new container whose volume is 65.0mL. The pressure of the gas in the second container is: 64 kPa 115.6 kPa 101....
Thursday, May 5, 2011 at 3:48am by Bai

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
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

chemistry
a 500.0 mL gas sample at STP is compressed to a volume of 300.0 ml and the temperature is increased to 35.0 C. What is the new pressure of the gas in pascals?
Tuesday, March 16, 2010 at 11:00pm by catherine

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
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
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 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
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

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 6:13am by Anonymous

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

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

chem
@ 46degress C a 1L sample of ammonia gas has a prssure of 5.3 atm. what is the pressure in atm on the sample when the volume is reduced to 100ml with no temp change?
Monday, April 25, 2011 at 10:41pm by help

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
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

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
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 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 gas sample in a sealed vial originally at 0.6 atm and 300 K, was heated at 450 K. What other property of the gas has changed? What is the value of this property after heating?
Friday, March 30, 2012 at 10:52pm by Alicia

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

Science
A gas sample in a sealed vial originally at 0.6 atm and 300 K, was heated to 450 K. What other property of the gas has changed? What is the value of this property after heating?
Monday, April 7, 2014 at 10:22pm by Sandy

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 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

Physics
A 1.6-mole sample of an ideal gas is gently cooled at constant temperature 280 K. It contracts from initial volume 37 L to final volume V2. A total of 1.9 kJ of heat is removed from the gas during the contraction process. What is V2? Let the ideal-gas constant R = 8.314 J/(mol...
Wednesday, March 27, 2013 at 12:00am by Jessica

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

CHEM.
HELLO AND GOOD EVENING EVERYONE mY QUESTION THAT IS QUITE MAKING ME FRUSTERATED IS : HOW MANY MASSES OF Cl2 MOECULE WOULD I EXPECT TO FIND IN A SAMPLE OF CHLORINE GAS? AND IT IS FOR SURE A GAS PLEASE HELP ME WITH MY HOMEWORK THANKYOU
Monday, June 4, 2007 at 2:55pm by Linda Cunniffe

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 collected over water at a temperature of 35 degrees celcius when the barometric pressure reading is 742.0 torr what is the partial pressure of the dry gas?
Tuesday, May 18, 2010 at 4:44pm by Jimmy

Chemistry
Assuming that temperature remains constant, calculate the final volume Pressure of a sample of 45 L of gas is increased and the gas goes from 100 kPa to 125 kPa;
Wednesday, April 6, 2011 at 12:54pm by Jill

Physics
A sample of helium behaves as an ideal gas as it is heated at constant pressure from 273 K to 353 K. If 25.0 J of work is done by the gas during this process, what is the mass of helium present?
Friday, May 13, 2011 at 12:40am by Sean

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

Chemistry
a sample containing 4.80 g O2 of gas has a volume of 15.0 L. Pressure and temperature remain constant. What is the new voume if 0.500 mole O2 gas is added?
Sunday, April 3, 2011 at 9:21pm by chelsea

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

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 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
The pressure exerted on a 240. mL sample of hydrogen gas at constant temperature is increased from 0.428 atm to 0.724 atm. What will the final volume of the sample be?
Monday, March 1, 2010 at 8:28pm by Rayven

Chemistry
The pressure exerted on a 240.0 mL sample of hydrogen gas at constant temperature is increased from 0.428 atm to 0.724 atm. What will the final volume of the sample be?
Sunday, March 6, 2011 at 11:47am by NDC

homework college chem.
a sample of gas occupies a volume at 73. 1 mL. As it expands, it does 135.0 J of work on its surroundings at a constant pressure of 783 torr. what is the final volume of gas?
Sunday, February 26, 2012 at 12:58am by danielle

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
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

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