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February 6, 2016

Search: gas

Number of results: 8,523

Physics
A monatomic ideal gas expands from 1.00m^3 to 2.50m^3 st a constant pressure of 2.00x10^5 Pa. Find the change in the internal energy of the gas.
November 23, 2012 by A

Physics
A monatomic ideal gas expands from 1.00m^3 to 2.50m^3 st a constant pressure of 2.00x10^5 Pa. Find the change in the internal energy of the gas.
November 24, 2012 by B

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.
April 12, 2013 by sarah

chemistry
A gas occupies 560.0 mL at 285 K. To what temperature must the gas be lowered if it is to occupy 250.0 mL? Assume that the pressure remains constant.
July 3, 2013 by madison

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?
August 4, 2013 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?
August 4, 2013 by JScholz

chemistry
What volume of carbon monoxide gas (at STP) is needed when 1.31 moles of oxygen gas react completely in the following equation? 2 CO + O2 --> 2 CO2
November 10, 2013 by B

Chemistry
A gas diffuses twice as fast as CF4 (g). The molecular mass of the gas is: I'm not sure how to figure this out without the rates of diffusion.
February 11, 2014 by Chloe

Chemistry
What pressure (in atmospheres) will be exerted by 1.3 moles of gas in a 13 litre flask at 22 degrees Celcius? (Gas constant (R) = 0.0821 L atm K^-1 mol^-1)
May 18, 2014 by Anonymous

CHEMISTRTY
IF CO2 TRAVELS 20.5 CM DOWN A 46.0 CM GLASS TUBE IN 1.3*10^4 AS IN THE GRAHAMS LAW EXPERIMENT, THEN COLLIDES WITH ANOTHER GAS. WHAT IS THE MOLECULAR MASS OF THE SECOND GAS?
June 2, 2015 by Joseph

Chemistry 11 grade -
Hydrogen gas was collected in a gas-collecting bottle with a volume of 30.0 mL by water displacement on a day where the temperature was 24C and the barometric pressure was 98.125 kPa. The vapour pressure of water at 24C is 2.99 kPa. What would be the volume of hydrogen gas ...
April 15, 2015 by Tania

Calculus
4. A gas station stands at the intersection of a north-south road and an east-west road. A police car is traveling towards the gas station from the east, chasing a stolen truck which is traveling north away from the gas station. The speed of the police car is 100 mph when it ...
April 7, 2010 by MILEY

CALCULUS
A gas station stands at the intersection of a north-south road and an east-west road. A police car is traveling towards the gas station from the east, chasing a stolen truck which is traveling north away from the gas station. The speed of the police car is 100 mph when it is 3...
April 8, 2010 by MILEY

chemistry
Gas X has a mass of 28.02 amu and gas Y has a mass of 32 amu. Which gas will diffuse faster?
January 27, 2012 by Anonymous

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...
February 28, 2009 by A.W.

chemistry
1) If the kelvin temperature of a gas sample in a steel tank increases to three times its original value , what will happen to the pressure? I think It will increase. Is this correct? By what factor does the gas pressure change? 2) A gas sample at a constant pressure shrinks ...
March 29, 2008 by Jason

chemistry
A gas of unknown molecular mass was allowed to effuse through a small opening under constant-pressure conditions. It required 52 s for 1.0 L of the gas to effuse. Under identical experimental conditions it required 24 s for 1.0 L of O2 gas to effuse. Calculate the molar mass ...
October 10, 2010 by Jennifer

Chemistry
A car air bag requires 70. L of nitrogen gas to inflate properly. The following equation represents the production of nitrogen gas: 2NaNsubscript3 -> 2Na + 3Nsubscript2 The density of nitrogen gas is typically 1.16g/L at room temp. Calculate the number of grams of ...
January 9, 2010 by Jenna

physics
An ideal gas at 19.8 C and a pressure of 2.79 x 105 Pa occupies a volume of 3.66 m3. (a) How many moles of gas are present? (b) If the volume is raised to 7.20 m3 and the temperature raised to 28.5 C, what will be the pressure of the gas? I got a) right with 419.46, but im ...
April 14, 2015 by P H Y S I C S

Law
1. What demographic of officer is less likely to use physical force and firearms and are more likely to use chemical weapons, such as pepper spray? A. Female officers B. New officers C. Young officers D. Male officers is it D 2. What is the difference between pepper spray and ...
May 29, 2014 by Amy

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 ...
November 16, 2010 by Need Help

Science Help!
A student mixed two clear liquids together in a beaker. A gas and a new liquid formed. The gas escaped, so the student was unable to measure its mass. She guessed that its mass was no more than 10.0 [LW1] grams. Her data is shown in the table below. Mass (g) Liquid reactant A=...
November 14, 2014 by Callie

CHEMISTRY
A mixture contains 5.00 g each of O2, N2, CO2, and Ne gas. Calculate the volume of this mixture at STP. Calculate the partial pressure of each gas in the mixture at STP. How do you calculate the mole fraction of each gas?
May 11, 2010 by ~anonymous

math
Alex's car takes 10 gallons of gas for 20.10 miles. If Shon's car uses 3/10 the amount of gas as Alex's car to travelled, what is the mileage for each person's car? How man gallons of gas would each need to travel 4.5 miles?
December 10, 2014 by Sonia

calculus related rates
Boyles law for the expansion of a gas is PV = k, where P is the pressure (in pounds per unit of area), V is the volume of the gas, and k is a constant. Find the expression that shows the rate of change of the pressure as related to the rate of change of the volume. dP/dt...
November 11, 2014 by Bill

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...
April 30, 2009 by Eunice

Trigonometry
A car traveling at a constant rate due east passes an interstate exit that is 1.0 mile from a gas station. The gas station is S50E of the exit. After the car has traveled for 2.0 minutes, its bearing to the gas station is S55W. How fast is the car traveling?
September 29, 2014 by Theresa

Chemistry
Two more need help figuring out how to do: How many liters of water vapor can be produced when 8.23 liters of oxygen gas reacts with hydrogen gas (H2g + 02g = H20g. How many liters of water vapor can be produced if 108 grams of methane gas are conbusted at 312K and 98 atm. CH4...
July 23, 2011 by Anonymous

Chemistry
A 3.5 liter gas sample at 20 degrees celcius and a pressure of 650 mm Hg is allowed to expand to a volume of 8570mL. The final pressure of the gas is 0.60 atm. What is the final temeperature of the gas in degrees celcius. Can anyone please show me the steps of how to do this ...
February 28, 2008 by Miley

Chemistry
Hydrogen gas,H2 , reacts with nitrogen gas,N2 , to form ammonia gas,NH3 , according to the equation 3H2+N2-2NH3 How many grams ofNH3 can be produced from 2.90mol ofN2 ? How many grams ofH2 are needed to produce 13.75g of NH3 ? How many molecules (not moles) ofNH3 are produced ...
October 5, 2009 by Rose

chemistry
A compressed gas cylinder contains 1.00 into 1000 g argon gas . the pressure inside the cylinder is 2050 psi at a temp of 18 degree . how much gas remains in the cylinder if the pressure is decreased to 650 psi at a temperature of 26 degree of 26 degree c
October 26, 2014 by mathew

Physics
According to Boyle's law, the volume V of a gas at a constant temperature varies inversely with the pressure P. When the volume of a certain gas is 125 cubic meters, the pressure is 20 psi (pounds per square inch). If the volume of gas is increased to 400 cubic meters, the ...
May 25, 2012 by Pat

Chemistry
What is the final volume of 880. mL of hydrogen gas at 335 mm Hg if the pressure is increased to 735 mm Hg? Assume the temperature and the amount of gas are held constant.
May 1, 2010 by Tiffany22

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.
October 16, 2010 by nicole

Chemistry
Find the mass of hydrogen gas if 420.5 mL of nitrogen gas reacted to form ammonia at STP according to the equation: 3H2 + N2 = 2NH3
February 10, 2011 by Mia

chemistry
write a balanced equation for this reaction. find out the mass of hydrogen chloride gas needed to react completely with 0.20 g of ammonia gas.
April 1, 2011 by jania

Chemistry
If the molar volume of an ideal gas is 22.4 L/mol, calculate the theoretical density of hydrogen gas at STP. Not sure what formula to use with this question. Thanks.
April 27, 2011 by Thao

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.
October 17, 2011 by Sven

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?
October 23, 2011 by samantha(very important)

10th grade chemistry
If an excess of nitrogen gas reacts with 25.0 L of hydrogen gas, according to the reaction below, how many L of ammonia will be produced? N2(g) + 3H2(g) ---> 2NH3(g)
May 29, 2012 by skyler

Physics please help me :)
If 3.4 mol of methane is heated so that the temperature of the gas increases 45 K while its pressure remains constant, how much heat is added to the gas?
June 23, 2012 by Meg

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?
November 14, 2012 by Sarah

PHYSICS DUE SOON
A gas is compressed at a constant pressure of 0.800 atm from 6.00 L to 1.00 L. In the process, 380 J of energy leaves the gas by heat. ____J
November 29, 2012 by Ame

Chemistry
If there are 5 liters of oxygen gas (O2) at 300 K and 400 torr, what will it weigh? Answer in units of g. Do I use the Ideal gas law formula for this problem?
January 29, 2013 by Peter

math
a man pays 60 cents for every 200m3 of gas used,plus a fixed charge of $13.75. How much does he pay when he uses 55 000m3 of gas?
April 28, 2013 by Jenna

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?
March 9, 2014 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 :((
March 12, 2014 by juju

Chem
A 500 -cm3 flask contains 0.420g of a gas at a pressure of 160kPa and a temperature of 330K. What is the molecular mass of this gas? M=____g/mol? Ty
April 16, 2014 by Brady

Chemistry
An unknown gas is placed in a 1.500 L bulb at a pressure of 356 mm Hg and a temperature of 22.5 ∘C, and is found to weigh 0.8108g .What is the molecular mass of the gas?
April 27, 2014 by Tyler

chem
A reaction yields 0.00704 mol of O2 gas. What volume will the gas occupy if it is collected at 16.0◦C and 0.767 atm pressure? Answer in units of mL
May 30, 2014 by reis

Chemistry
If vapour density of gas 32g and occupies a volume of 560cm cube find the mass of the gas also determine its number of molecule
June 2, 2014 by Goodness

Chemistry
A flexible balloon containing 1.5 mol of... ideal gas at constant pressure of 1.5 at... 100 C. Calculate the change in intern...‡ (ΔE) of the gas.
February 11, 2015 by N

Chemistry
An unknown gas sample is collected in a 255mL container at 25 C and 755 mmHg. How many moles of gas are present? show solution please so i can learn:D
February 19, 2015 by Dianne

college chemistry
solid diarsenic trioxide reacts with Flourine gas to produce liquid arsenic pentaflouride and oxygen gas. Write the Qc for this reaction
March 24, 2015 by Mia

Chemistry help
A gas occupying 29 mL at standard conditions is heated to 14◦C while the pressure is reduced to 0.98682 atm. What is the new volume occupied by the gas?
March 29, 2015 by Quintin

Chemistry
To identify a diatomic gas (X2), a researcher carried out the following experiment: She weighed an empty 5.3-L bulb, then filled it with the gas at 1.30atm and 27.0 ∘C and weighed it again. The difference in mass was 7.9g . Identify the gas. Express your answer as a ...
August 20, 2014 by Sam

physics
A cylinder of gas is compressed by a piston from an intial volume of 125 litres to a final volume of 90 litres.The compression occurs at constant pressure and work done on the gas by the piston is 10^4J.What is the gas pressure during compression
November 29, 2014 by takunda

Physics
An ideal gas at 6.0C and a pressure of 1.92 105 Pa occupies a volume of 2.10 m3. (a) How many moles of gas are present? moles (b) If the volume is raised to 4.60 m3 and the temperature raised to 30.5C, what will be the pressure of the gas? Pa
April 20, 2008 by Tasha

physics
An ideal gas at 18.5C and a pressure of 1.54 105 Pa occupies a volume of 2.10 m3. (a) How many moles of gas are present? moles (b) If the volume is raised to 5.30 m3 and the temperature raised to 31.0C, what will be the pressure of the gas? Pa
April 26, 2008 by Sophia

Math
A bus can cover a distance of 6 miles in 1 gallon of gas. The cost of gas is $4 per gallon. What will be the cost of gas used in driving the bus for 96 miles?
March 12, 2015 by kevin

chemistry
Zinc combines with hydrochloric acid to form aqueous zinc chloride and hydrogen gas. If 300.0 mL of a 0.150 M solution of HCl is allowed to react with excess zinc, how many moles of hydrogen gas would be produced? Part two: if this reaction happens at STP what volume of ...
March 6, 2012 by Anonymous

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 ...
January 23, 2008 by Jeanine

Math 115 # 19
The following information shows a relationship between the speed of a certain car over a 100-mi test trip and the gas mileage obtained: Speed 40 45 50 55 60 gas millage 35 33 28 25 22 Use this information to make a line graph and then predict the gas mileage associated with a ...
January 9, 2009 by Deb

Chemistry
which phase change is endothermic ? (1)gas-->solid (2)gas-->liquid (3)liquid-->solid (4)liquid-->gas
January 9, 2011 by Jazmin

Chemistry
A mixture of Nitrogen and Argon gases in a balloon exerted a pressure of 2.55 atm. Given that there were 1.0 g nitrogen gas and 3.2 g argon gas in the balloon, calculate the partial pressure of argon gas.
May 2, 2011 by Mandy

chemisrty
What is the total pressure of the gas produced in the burette if it contains nitrogen gas whose pressure is 1.5 atm, oxygen gas whose pressure is 1.6 atm and water vapour with a pressure of 1.3 atm.
May 24, 2015 by lusiana

Chemistry
A mixture of nitrogen gas and hydrogen gas reacts in a closed container to form ammonia gas. The reaction ceases before either reactant is completely consumed. At this stage the container has 3.0 mol each of all three gases; nitrogen, hydrogen and ammonia. How many moles of ...
June 30, 2013 by megs

chemistry
A mixture og gases has a total pressure off 28.3 atm, it is made of: 5.8 atm of hydrogen gas, 7.2 atm of nitrogen gas, 3.5 atm of oxygen gas and some amount of methane. What is the pressure of methane? what is the pressure of methane in kPa?
March 26, 2015 by Anonymous

chemistry
A compressed gas cylinder of H2 containing 25 l at 200,000 kPa of pressure is emptied due a leak in a gas chromatography laboratory, with the following dimensions: 5 m long, 4 meters wide and 2.5 m height. Calculate the % oxygen and hydrogen in the atmosphere of the laboratory...
June 27, 2012 by Uwaoma

Chemistry
What gas is produced by the reaction of magnesium and HCl as evidenced by the "poof" test? acids react with active metals to yield hydrogen gas and a salt.
May 16, 2007 by Louise

Science
Balanced chemical equation for the carbon monoxide gas for motor car engines combines with the oxygen gas in the air to produce carbo dioxide
September 27, 2010 by Sibusiso

chemistry
an ideal gas at 75.0 c and 760 .mm hg is contained in a flexible vessel. Its volume is doubled and the pressure remains.unchanged .determine the temperature of the gas as a consequence of these changes
August 26, 2011 by devin boutte

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
August 15, 2011 by Lizzie

chemistry
What is the density of propene gas measured at 2.5 atm and 47C? I know that I use the combine gas law, but I dont know how to find "n" in this particular problem. Please help ASAP!
November 30, 2011 by Henry

Physics (12th Grade)
When an ideal diatomic gas is heated at constant pressure then what fraction of heat given is used to increase internal energy of gas?
April 9, 2012 by Tulika

physics
A monatomic ideal gas (Cv = 3/2 R) undergoes an isothermal expansion at 300 K, as the volume increased from .05 m^3 to .15 m^3 The final pressure is 130kPa The heat transfer to the gas, in kJ, is closest to?
April 15, 2012 by Marcyel

physics
Heat is added to an ideal gas at 20 degrees Celsius. If the internal energy of the gas increases by a factor of three during this process, what is the final temperature?
April 19, 2012 by William

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?
April 25, 2012 by Zion

chem
In a laboratory experiment 259 ml of gas was collectedd over water at 24 degree C and 752 torr. Calculate the volume, that the dry gas occupy at STP?
November 24, 2012 by byke

chemistry
A 813. mL sample of argon gas at 452. K is cooled at constant pressure until the volume becomes 356. mL. What is the new gas temperature in Kelvin?
October 31, 2014 by Anonymous

Math
Tara's car travels about 25 miles on one gallon of gas. She has between 10 and 12 gallons of gas in the tank. List the independent and dependent quantities
December 8, 2014 by M

Chemistry
Find the number of moles of water that can be formed if you have 226mol of hydrogen gas and 108mol of oxygen gas. Express your answer with the appropriate units.
April 14, 2015 by Brittany

Chemistry
The reform reaction between steam and gaseous methane () produces "synthesis gas," a mixture of carbon monoxide gas and dihydrogen gas. Synthesis gas is one of the most widely used industrial chemicals, and is the major industrial source of hydrogen. Suppose a chemical ...
April 15, 2011 by BlahxD

physics(gas laws)
Got a question 3. Given 325 ml of saturated gas at 760 mmHg and 25C, what would be its volume if dry at the same pressure and temperature? I got confused when I read 'if dry' Does that mean I have to subtract something out of 760mmHg? And would I used the combined gas law and...
January 27, 2008 by abby

Chem HW Help!
I need help answering some questions on how to combine gas law.If for some reason you don't feel you shold answer this question can you provided me with the steps on how to combine gas laws or give me a good website that may provided help or may have a good combine gas law ...
May 1, 2008 by Lizy

MATH PLEASE HELP!
According to Boyle's law, the pressure p of a compressed gas is inversely proportional to teh volume, v. If a pressure of 20 pounds per square inch exists when the volume of the gas is 500 cubic inches, what is the pressure when the gas is compressed to 400 cubic inches?
January 7, 2009 by Roger

Math
I'm having trouble with a math problem, it says: A quantity of gas has a volume of 0.20 cubic meter and an absolute temperature of 333 degrees kelvin. When the temperature of the gas is raised to 533 degress kelvin, what is the new volume of the gas? Thank You. Assuming ...
July 5, 2005 by Mirayah Robinson

algebre
Victor needs to calculate the number of miles per gallon his car averages. His car's gas tank holds 15 gallons of gas. Write an equation that will help him determine the average number of miles his car gets per gallon of gas.
July 14, 2014 by Shelley

chemistry
Automotive air bags inflate when sodium azide, NaN3, rapidly decomposes to its component elements: 2NaN3(s)→2Na(s)+3N2(g) a)How many moles of N2 are produced by the decomposition of 1.60mol of NaN3? b)How many grams of NaN3 are required to form 14.0g of nitrogen gas? c)...
January 10, 2014 by Veronique

Chemistry 211
Chlorine pentafluoride gas is collected at -14.0 degrees Celcius in an evacuated flask with a measured volume of 30.0L When all the gas has been collected, the pressure in the flask is measured to be 0.260atm. Calculate the mass and number of moles of chlorine pentafluoride ...
January 13, 2011 by Melissa Carder

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 ...
September 5, 2011 by Lola

chemistry
Calculate the mass (in grams) of water vapor produced when 56.0 grams of pure hydrogen gas burn in the air. Given the information from that, calculate the mass of oxygen gas that would be needed to burn 100 grams of hydrogen gas.
November 15, 2010 by Brandon

chemistry
Calculate the mass (in grams) of water vapor produced when 56.0 grams of pure hydrogen gas burn in the air. Given the information from that, calculate the mass of oxygen gas that would be needed to burn 100 grams of hydrogen gas.
November 15, 2010 by Brandon

Math
The metric ton of CO2 product per gallons of gas can be calculated with the following. 8.78 x 10-3 metric tons of CO2 are emitted per gallon of gas. Let say the gallon of gas is 1288. Would the CO2 produced be around 11.3 tons? Thanks
January 22, 2013 by Shadow

chemistry
Determine the percent yield for the reaction between 98.7g of Sb2S3 and excess oxygen gas if 72.4g Sb4O6 is recovered along with an unknown amount of sulfur dioxide gas.
March 7, 2008 by kate

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.
March 10, 2008 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.
September 6, 2010 by janay

chem 101
it takes a certain gas 1.98 times as long to diffuse as an equal volume of helium under the same conditions. what is the calculated molecular weight of the gas?
November 5, 2011 by Anonymous

Chemistry
Consider a process in which an ideal gas is compressed to one-sixth of its original volume at constant temperature. Calculate the entropy change per mole of gas.
April 27, 2012 by Jematormal91

Chemistry help asap
I need help with this ideal gas law problem I know how to set the equation up but I'm not getting the correct answer. How many moles of gas can be contained in a 1.44 L flask at 32Celsius and 93.5kPa?
May 3, 2012 by Candy

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