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April 20, 2014

Search: A sample of gas occupies 13 L under a pressure of 1.3 atm. What would th..

Number of results: 19,521

molecular formula
a gas contains 51.7% sulfur & 51.6 percent oxygen. in a sample of gas, there is .620 g. v= 292 ml. p=806 torr. t= 378 K. what is the molecular formula. how does the % sufur & oxygen tie into all this? 51.7% S and 51.6% O gives me more than 100.0%. OOps.
Sunday, January 28, 2007 at 1:35pm by dory

science
when the oxide of arsenic is heated it sublimes and becomes a gas. at 650oc and a pressure of 690mmHg the 0.927g sample of the oxide has a volume of 194cm3. calculate the volume,in cm3, that the sample would have at the same temperture (650oc) but at a pressure of 760mm Hg ...
Friday, February 2, 2007 at 8:31am by hanny dunny

o Chem
a sample consisting of 1-bromopropane and 1-chloropropane isinjected into a gas chromatograph quipped with a nonpolar column.which compound has the shorter retention time? Explaine the answer. b.if the same sample were run several days later with theconditions as nearly the ...
Tuesday, October 9, 2012 at 9:40pm by MELISSA

AP Chemistry
Consider a 50.4 g sample of H2O(g) at 115C. What phase or phases are present when 156 kJ of energy is removed from this sample? Specific heat capacities: ice, 2.1 J/gC; liquid, 4.2 J/gC; steam, 2.0 J/gC, Hvap = 40.7 kJ/mol, Hfus = 6.02 kJ/mol. (Select all that apply...
Friday, November 28, 2008 at 11:25pm by Robert

science
I have a problem with your equation: Chlorine gas is Cl2. I would do this one on mass. YOu know 2*molemass of Cl2 occupies 22.4 l at stp, so massCl2=13/22.4 * 2*35.4= you do it. massNa+ massCl2=mass salt solve formass salt.
Friday, November 13, 2009 at 2:13pm by bobpursley

Chemistry
1. Calculate the number of molecules in a deep breath of air whose volume is 2.15 L at body temperature, 36 degrees Celsius, and a pressure of 740 torr. 2.A fixed quantity of gas at 24 degrees Celsius exhibits a pressure of 740 torr and occupies a volume of 4.42 L. a)Use Boyle...
Monday, November 2, 2009 at 9:49pm by Emory

college
You transfer a sample of gas at 17 degrees celsius for a volume of 5.86 L and 1.10 atm to a container at 37 degrees celsius that has a pressure of 1.10 atm. what is the new volume of gas?
Wednesday, December 1, 2010 at 3:10pm by dayton

chemistry
20g of nitrogen gas and 10g of helium gas are placed together in a 5L container at 25C . Calculate the partial pressure of each gas and the total pressure of the gas mixture.
Sunday, November 20, 2011 at 10:44am by NONO

Chemistry
Element M(a solid) reacts with an aqueous solution of compound B to form an aqueous solution of compound C(a salt) and a gas composed of element D. When 1.000g of element M is reacted with excess oxgen 1.658g of the compound MO are formed. Compound B is binary, monoprotic acid...
Sunday, December 12, 2010 at 11:21am by Patrick

Chemistry
Element M(a solid) reacts with an aqueous solution of compound B to form an aqueous solution of compound C(a salt) and a gas composed of element D. When 1.000g of element M is reacted with excess oxgen 1.658g of the compound MO are formed. Compound B is binary, monoprotic ...
Sunday, December 12, 2010 at 3:37pm by Patrick

Chemistry
Element M(a solid) reacts with an aqueous solution of compound B to form an aqueous solution of compound C(a salt) and a gas composed of element D. When 1.000g of element M is reacted with excess oxgen 1.658g of the compound MO are formed. Compound B is binary, monoprotic acid...
Monday, December 13, 2010 at 8:54am by Patrick

chemistry
A sample of metallic element X, weighing 4.315 g, combines with 0.4810 L of Cl2 gas (at normal pressure and 20.0C) to form the metal chloride with the formula XCl. If the density of Cl2 gas under these conditions is 2.948 g/L, what is the mass of the chlorine? The atomic ...
Friday, July 22, 2011 at 4:04pm by Hannah

chemistry
A sample of metallic element X, weighing 4.315 g, combines with 0.4810 L of Cl2 gas (at normal pressure and 20.0C) to form the metal chloride with the formula XCl. If the density of Cl2 gas under these conditions is 2.948 g/L, what is the mass of the chlorine? The atomic ...
Friday, July 22, 2011 at 4:04pm by Hannah

chemistry
at STP, a mol of perfect gas occupies 22.4 liters so we need to know how many moles How many grams in 1 mol of K Cl O3 ? K = 39 Cl = 35.5 O3 = 16*3 = 48 --------------- mol = 122.6 grams so 3.5 grams of KClO3 = .0286 mol for every mol of KClO3 I get 3/2 mol of O2 so (3/2) (....
Saturday, March 1, 2014 at 3:05pm by Damon

Chemistry
Pantothenic acid id one of the B vitamins. A sample of pantothenic acid was found to produce 3.84 mL of nitrogen gas, N2 at 23 degrees celsius and 785 mmHg. What is the volume of the nitrogen gas (in liters) produced as 29 degrees celsius and 0.993 atm?
Thursday, February 28, 2013 at 8:47am by Kirstyn

Chem
A chemist was asked to find the molecular mass of a gas. She massed the gas and found that 3.73 g of the gas occupied 300 cm3 at 25C and 92.4 kPa. What is the molecular weight of the gas?
Friday, March 28, 2008 at 10:06pm by B

Chemistry(Please check)
1) choose the correct statement about the postulates of kinetic theory of gases. a) a sample of a gas consists of a small number of large particles close together. b) the movement of gas molecules is predictable, not random. c) when gas molecules collide, they permanently ...
Tuesday, January 10, 2012 at 10:20pm by Hannah

statistics
What are the sample median and the mode for males? The sample mean mark of the 50 male students is 8.30. If the sample mean for the entire sample is 8.42, what is the sample mean for the 75 female students?
Wednesday, September 12, 2012 at 1:47am by Maria

statistics
What are the sample median and the mode for males? The sample mean mark of the 50 male students is 8.30. If the sample mean for the entire sample is 8.42, what is the sample mean for the 75 female students?
Wednesday, September 12, 2012 at 1:47am by Maria

i reallry need help plz-science
how accurate was the scale? how dry was the sample? was any of the gas lost?
Monday, October 15, 2007 at 11:06pm by bobpursley

physics
a 20.0L sample of hydrogen gas has a mass of 1.80g. What will its density be in g/ml?
Tuesday, July 13, 2010 at 7:12am by Jen

chemistry
How many grams of methane gas (CH4) are in a 15.8 liter sample at 1.2 atmospheres and 27C
Sunday, October 31, 2010 at 10:50pm by smith

chemistry
if a sample of NO2 gas has 4.5ml. what is the cooled constant pressure from 45 to 5 degrees?
Sunday, November 6, 2011 at 8:38pm by kp

chemistry
This is a limiting reagent problem. I now that because amounts are given for BOTH reactants. Write a balanced equation. 2Al + 3H2SO4 ==> Al2(SO4)3 + 3H2 Convert mols of each reactant to mols H2. Al first. 15.0 mols Al x [3 mols H2/2 mols Al) = 15.0 x 3/2 = 22.5 mols H2 gas...
Sunday, May 19, 2013 at 12:49pm by DrBob222

chemistry
11.31) solve for the new pressure when each of the following temperature changes occurs, with n and V constant: a. a gas sample has a pressure of 1200 torr at 155 celcius. what is the final pressure of the gas after the temperature has droped to 0 celcius? 1200 x12 celcius/0 ...
Sunday, June 27, 2010 at 12:21am by Jetta

cleveland state university
A sample of gas at 1.3 atm of pressure is in a 2.0 L container. What will the pressure be if the sample is transferred to a 0.90 L container? 1. 0.59 atm 2. 1.4 atm 3. 2.9 atm 4. 3.2 atm
Monday, November 21, 2011 at 12:34pm by Danielle

Chemistry
Please show me the steps..... At STP, 3.00 L of nitrogen gas contains the same number of molecules as A) 1.00 L of nitrogen gas B) 2.00 L of oxygen gas C) 3.00 L of chlorine gas D) 4.00 L of hydrogen gas
Wednesday, December 1, 2010 at 11:00am by Kiesha

statistics
Your samle is normally distributed with a mean age of 57. The standard deviation iin this sample is 5 years.The 2000 census shows your sample is older than a randomly selected national sample. The median agein your sample is?
Monday, June 3, 2013 at 11:45am by statistics

Chemistry
Calculate moles NaBr initially. moles = M x L. Calculate moles Cl2 initially. Use PV = nRT or the fact that a gas at STP occupies 22.4 L. Determine the limiting reagent and from that the moles NaCl produced. Then moles = M x L. You know moles and M, calculate L and convert to ...
Friday, February 12, 2010 at 6:32pm by DrBob222

Physical Science
The refrigerated one will be smaller. The heated one will be larger. Air (any gas) occupies a smaller volume when it is cooled and a larger volume when it is heated.
Sunday, September 27, 2009 at 11:51pm by DrBob222

Chem-organic, bio, intro
A gas mixture contains oxygen and argon at partial pressures of 0.60 atm and 425 mmhg. If nitrogen gas added to the sample increases the total pressure to 1250 torr, what is the partial pressure in Torr of the Nitrogen added? Steps for solving this problem are greatly ...
Sunday, October 16, 2011 at 3:20am by Ashleigh

Chemistry
A pocket of gas is discovered in a deep drilling operation. The gas has a temperature of 480c and is at a pressure of 12.8 atm. What volume of gas is required to provide 18.0 L of gas at the surface where the conditions are 22 C and 1.00 atm?
Tuesday, January 15, 2008 at 12:37am by Lauren

chemistry please help i cant figure this out
What is the total mmHg pressure in of a gas mixture containing argon gas at 0.25atm , helium gas at 385mmHg , and nitrogen gas at 345torr. ? sorry i didnt relize i left them out.
Thursday, September 6, 2012 at 2:02pm by katy

chemistry
What volume (in liters) does 3 g sample of Argon (Ar) gas occupy at standard conditions (STP)?
Tuesday, February 24, 2009 at 7:58pm by margaret

chemistry
AQUEOUS SODIUM HYDROXIDE IS ADDED TO SAMPLE X AND IS WARMED A GAS EVOLVES HCL WHAT IS THE EQUATION
Thursday, May 12, 2011 at 8:59am by Anonymous

chemistry
A sample of Cl2 gas having a volume of 0.75 L at 20degrees C and 725mmHg has a mass equal to
Sunday, April 15, 2012 at 8:54am by srihitha

chem
Calculate the formula wright of a 2.50 g sample of gas whose volume is 1.40l at STP.
Wednesday, August 1, 2012 at 7:20pm by liz

Chem
What will be the temperature of a 3.5 gram sample of carbon dioxide gas in a 2.5 liter container at .955 atm
Monday, April 1, 2013 at 9:16pm by Ben

physical science
The equation is 2KClO3 ==> 2KCl + 3O2 This is done the same way as the SO2 problem. Just follow the steps to obtain the mass of O2. Do you want that volume at STP? I assume so. Remember that 1 mol of any gas occupies 22.4 L. You know how many mols O2 you have. mols O2 x (22...
Monday, September 30, 2013 at 11:21pm by DrBob222

Chem 1000
A Cylinder is filled with 1.20 mol of He(g) at 25 C under ambient pressure of 0.966 atm. The gas in the cylinder is then heated with 1.430 KJ of heat, and the piston is raised by the expanding gas under the constant ambient pressure. Calculate the following after expansion. a...
Saturday, October 16, 2010 at 3:23pm by J Velji

College Chemistry
A Cylinder is filled with 1.20 mol of He(g) at 25 C under ambient pressure of 0.966 atm. The gas in the cylinder is then heated with 1.430 KJ of heat, and the piston is raised by the expanding gas under the constant ambient pressure. Calculate the following after expansion. a...
Saturday, October 16, 2010 at 3:33pm by J Velji

Chemistry
A 0.188g sample of unknown metal, X (s), produced 71.4 ml of hydrogen gas when reacted with HCL according to the equation: X(s)+2HCL(aq)--->XCl2(aq)+H2(g) The gas was collected over water at 23 degrees Celsius. The levels of water inside and outside the gas collecting tube ...
Thursday, February 10, 2011 at 1:31am by K

Statistics
. A random sample is selected from a normal population with a mean of __40 and a standard deviation of __10. After a treatment is administered to the individuals in the sample, the sample mean is found to be M _ 42. a. How large a sample is necessary for this sample mean to be...
Thursday, January 26, 2012 at 10:04pm by Sharon

Probabilty & Statistic
A random sample is selected from a normal population with a mean of __40 and a standard deviation of __10. After a treatment is administered to the individuals in the sample, the sample mean is found to be M _ 42. a. How large a sample is necessary for this sample mean to be ...
Monday, January 23, 2012 at 4:39pm by Sharon

Chemsitry II
The partial pressure of CH4(g) is 0.185 atm and that of O2(g) is 0.300 atm in a mixture of the two gases. a) What is the mole fraction of each gas in the mixture? b) If the mixture occupies a volume of 11.5 L at 65 degress C, calculate the total number of moles of gas in the ...
Thursday, May 10, 2007 at 7:13pm by Jayd

phyics
on a warm day(92 degrees F) an air filled balloon occupies a volume of .20m^3 and is under a pressure of 20.0 lbs/in^2. if the baloon is cooled to 32 degrees F in a refigerator while its pressure is reduced to 14.7 lb/in wat is the volume on the air in the container? (assume ...
Sunday, February 28, 2010 at 8:46am by Standard C.

chemistry
1. Nitrogen gas and sodium liquid are produced by the decomposition of sodium azide NaN3 (s). what volume of nitrogen gas, measured at 25 C and 0.980 atm, is produced by the decomposition of 62.5 g of sodium azide? 2. A gas sample in a container with a volume V at a ...
Thursday, December 9, 2010 at 7:50pm by Helen

chemistry
At 16C a sample of ammonia gas exerts a pressure of 11.7 atm. What is the pressure when the volume of the gas is reduced to one-fourth of the original value at the same temperature so the inital Temp=16 C initial Pressure. 11.7 final pressure-unknown temperature-same what next?
Sunday, October 17, 2010 at 8:20pm by april

chemistry
A 1.25g sample of dry ice is added to a 750ml flask containing nitrogen gas at a temperature of 25.0 C and a pressure of 725mmHg. The dry ice is allowed to sublime (convert from solid to gas) and the mixture is allowed to return to 25.0C. What is the total pressure in the flask?
Wednesday, October 20, 2010 at 12:23pm by Anonymous

chemistry
A 1.25g sample of dry ice is added to a 750ml flask containing nitrogen gas at a temperature of 25.0 C and a pressure of 725mmHg. The dry ice is allowed to sublime (convert from solid to gas) and the mixture is allowed to return to 25.0C. What is the total pressure in the flask?
Wednesday, October 20, 2010 at 9:02pm by Anonymous

chem
An experiment shows that a 114 mL gas sample has a mass of 0.167 g at a pressure of 721 mm Hg and a temperature of 32C. What is the molar mass of the gas? so im suppose to find the molar mass but i thought that was the same as the g just converting it..? im using the equation...
Monday, February 14, 2011 at 6:45pm by hannah

Science
A sample of water decomposes to make 4g of hydrogen gas and 32g of oxygen gas. What mass of water decomposed? How do you know? Hint: The water decomposes into ONLY hydrogen and oxygen, and the total mass does not change in the process. It's called the Law of Conservation of ...
Sunday, April 22, 2007 at 7:52pm by AJ

chemistry
a 25.0 sample of nitrogen has a volume of 50.0L and a pressure of 630. mmHg. what is the temperature of the gas?
Tuesday, March 29, 2011 at 6:04pm by Anonymous

Chemistry
What volume a sample of 67.0 grams of nitrogen gas (N2)will occupy at -25degrees C and 3 atm pressure?
Sunday, December 2, 2012 at 2:24pm by malina

science
Calculate the fraction of atoms in a sample of argon gas at 365 K that has an energy of 11.0 kJ or greater.
Saturday, February 9, 2013 at 6:00pm by Hannah

chemistry
A 50g sample of ammonium dichromate is decomposed, what is the milliliter volume of nitrogen gas released at STP?
Sunday, June 2, 2013 at 1:07pm by Pat

Chemistry
The volume of 3.96g of a gas sample at standard conditions it was found to be 1.15L.Calculate its molecular mass.
Sunday, April 13, 2014 at 1:05pm by Jaco

science
The volume of 3.96 g of a gas sample at standard conditions it was found to be 1.15 L.Calculate its molecular mass?
Sunday, April 13, 2014 at 1:49pm by Jaco

chemistry
Use PV = nRT and the first set of conditions and solve for n = number of mols. n = grams/molar mass. You know n and grams, solve for molar mass. Since 1 mol of a gas occupies 22.4L at STP, then volume @ STP is n x 22.4 = ?
Tuesday, February 28, 2012 at 7:16pm by DrBob222

chemistry
A 1.325 g sample of an unknown vapor occupies 386 mL at 114 celsius and 946 mmHg. The simplest formula of the compound is NO2. What is the molecular formula of the compound? (I have N2O4, is this correct and if not, why not? We never went over this type of question in class! ...
Wednesday, October 20, 2010 at 8:09am by lavonne

chem
Consider the following cyclic process carried out in two steps on a gas. Step 1: 48 J of heat is added to the gas, and 20. J of expansion work is performed. Step 2: 70. J of heat is removed from the gas as the gas is compressed back to the initial state. Calculate the work for...
Sunday, December 2, 2007 at 12:27pm by mel

CHEMISTRY
Consider the following cyclic process carried out in two steps on a gas. Step 1: 41. J of heat is added to the gas, and 20. J of expansion work is performed. Step 2: 60. J of heat is removed from the gas as the gas is compressed back to the initial state. Calculate the work ...
Monday, April 30, 2012 at 11:56pm by Sarah

chemistry
A sample of helium gas has a pressure of 860 mm Hg at a temperature of 225 K. At what pressure (mm Hg) will the helium sample reach a temperature of 675 K.
Monday, November 21, 2011 at 10:49am by Anonymous

Chemistry
number 1 requires the gas law in one way or another at STP a mole of gas occupies 22.4 liters as a check STP is 273 K we are at 293 K I guess we are at one atm, it does not say V = 5 liters P = 1 atm T = 293 R = 0.0821 literatm/molK PV = n R T n = PV/RT = 1 * 5 /(.0821*293) ...
Thursday, February 27, 2014 at 6:12pm by Damon

Chemsitry II
mole fraction is equal to partial pressure divided by the total pressure Total pressure= sum of partial pressure use PV=nRT where n= number of moles equation become PV/RT=n make sure to convert the temperature to Kelvin and to use 0.0821 for R. V=volume, P=total pressure The ...
Thursday, May 10, 2007 at 9:25pm by Delli

Chemistry
I am not quite sure how to do this problem, it doesn't seem to fit into any of my given equations: A gas has a volume of 35.5L and a pressure of 765mmHg at standard temperature. If the same sample is placed in a 56.0L container and the pressure is measured at 0.92atm, ...
Monday, May 4, 2009 at 5:09pm by Nick

Chemistry
A 2.00g sample of a gas SX6 has a volume of 329.5 cm3 at 1.00 atm and 20 celcius. What element is X?
Friday, March 26, 2010 at 12:04pm by Meg

Chemistry
what would an open manometer look like in which the pressure of the gas sample is 34.5 kPa higher than the atmosphere?
Thursday, January 6, 2011 at 5:05pm by al

Chemistry
PM = dRT P is pressure in atm. M is molar mass H2O d is density of gas sample. R is 0.08206 T is 373K.
Monday, July 11, 2011 at 2:38pm by DrBob222

chemistry
a sample of carbon dioxide gas has a mass of 52.0g. how many oxygen atoms arr present?explain
Sunday, October 2, 2011 at 9:55pm by anu

Chemistry
If 42.8 L of helium gas is collected at a temperature of 277K and has a mass of 4.84 grams, what is the pressure of the sample in torr?
Wednesday, December 7, 2011 at 4:26pm by Cami

chemistry
Calculate the approximate volume of a 0.600 mol sample of gas at 15.0 degrees C and a pressure of 1.10 atm.
Thursday, December 15, 2011 at 4:27pm by clint

Chemistry
A gas sample absorbs 53KJ of heat and does 18 KJ of work. Calculate the change in its internal energy
Tuesday, August 14, 2012 at 12:27pm by Gisselle

science
If the pressure of 20.0 mL of a gas sample is increased by 4 times and the absolute temperature is doubled, what is the new volume?
Tuesday, October 30, 2012 at 12:41pm by Mickeykalle

Chemistry
For a given sample of CH3OH, the enthalpy change on reaction is 17.0 kj. How many grams of hydrogen gas are produced?
Saturday, November 10, 2012 at 9:03pm by Sherri

chemistry
A sample of gas has a mass of 0.585g . Its volume is 110mL at a temperature of 95^\circ C and a pressure of 745mm\;Hg .
Wednesday, December 12, 2012 at 10:15pm by sydney

8th Grade Physical Science
Calculate the density of a sample of gas with a mass of 30 g and volume of 7500 cm3.
Tuesday, October 1, 2013 at 11:59pm by kirt

CHEMISTRY
A 44.1 L sample of nitrogen gas at a pressure of 88.3 kPa is placed into a container of equal volume that already holds hydrogen gas at a pressure of 125.6 kPa. ! What is the partial pressure of the nitrogen in the new container? ! What is the total pressure in the new container
Monday, October 7, 2013 at 8:36pm by Anonymous

chem
What is the total pressure in mm Hg of a gas mixture containing argon gas at 0.25 atm helium gas at 350 mm,Hg, and nitrogen gas at 360 torr.
Saturday, July 10, 2010 at 6:46pm by andy

chem PLEASE HELP
A Nitrox II gas mixture for scuba diving contains oxygen gas at 50atm and nitrogen gas at 98atm . What is the total pressure, in atm, of the scuba gas mixture?
Thursday, July 18, 2013 at 1:01am by Anonymous

pressure
a 6.04L cylinder contains 1.71mol of gas A and 4.35 mol of gas B, at a temperature of 33.1C. calculate the partial pressure of each gas in the cylinder. assume ideal gas behavior.
Wednesday, September 18, 2013 at 6:29pm by Anonymous

algebra
while driving a car you realize that you only have one eighth gas remaining before you run out of gas you pull into a gas station and put is gallons of gas in your car's tank is now three fourths full how many gallons of gas does your car's tank hold show or explain how you ...
Thursday, November 17, 2011 at 6:43pm by patel

chemistry
some oxygen occupies 500.0 ml when its temperature is 40.0 C . if you wished to decrease the volume by 100.0 ml, to what temperture celsius would you need to lower the gas? not sure how to set this up right..keep thinking i need to subtract 100.0 from 500.0 first,then set it ...
Wednesday, February 2, 2011 at 7:46am by Harley

chemistry
No, the are not the same. The Combined Gas Law is: P1V1/T1 = P2V2/T2 The Ideal Gas Law is: PV = nRT Your chemistry textbook should explain the difference. The most importance difference is that in the Combined Gas Law, the amount (moles) of gas are assumed to be constant. In ...
Monday, March 2, 2009 at 7:25pm by GK

chemistry
What are the skeleton equations for Dicarbon hexahydride gas + oxygen gas --> carbon dioxide gas + gaseous water And Solid barium and chlorine gas react to produce solid barium chloride
Tuesday, April 3, 2012 at 3:00pm by me

physics (gas laws)
30 cubic meters of argon gas are kept under constant pressure. The gas is heated from 10.0 degrees Celsius to 293 degrees Celsius. What is the new volume of the gas?
Saturday, January 26, 2008 at 9:08pm by Anonymous

Chemistry
Please help me out... The pressure of a container of fluorine gas with a volume of 1.5L is 678mmHg at 55.0*C. a. If the volume of the fluorine gas increases to 5.0L, what would be the pressure of the gas in atm? The amount and tempature of gas are consistant. b.How many grams ...
Saturday, November 19, 2011 at 8:16pm by Victor

CHEMISTRY
A GAS OCCUPIES A VOLUME OF 584 ML AT A PRESSURE OF 12.01K PA AND A TEMPERATURE OF 303K. whEN THE PRESSURE IS CHANGES, THE VOLUME BECOMES 477ML. IF THERE HAS BEEN NO CHANGE IN TEMPERATURE, WHAT IS THE NEW PRESSURE? ........ PLEASE HELP ME WITH THIS ....THANKS SOOOOOOO MUCH...
Monday, January 8, 2007 at 9:58pm by TIFFANY

science
If the student opened the bag after the above experiment, what would happen to volume of gas inside? A. The volume of gas in the bag will stay the same. B. the volume of gas in the bag will be decrease. C. The volume of gas in the bag will be increase. D. the volume of gas in ...
Thursday, January 30, 2014 at 7:11pm by Paul

Chemistry
What is the molecular weight of a gas if a 21.0g sample has a pressure of 836mm Hg at 25.0 degrees C in a 2.00L flash?
Tuesday, December 7, 2010 at 1:26pm by Shirley

Chemistry
A sample of a gas weighs 4.526g and has a volume of 890.0 mL at 645.0 torr and 29(degrees C). What is its molar mass?
Thursday, March 31, 2011 at 1:12am by Toni Jones

Chemistry
A 1.56L sample of Neon gas at STP is heated to 100C, what is the final pressure assuming the volume stays the same?
Monday, April 25, 2011 at 7:17pm by Terrie

chemistry
A sample of neon gas at 1.20 atm compresses from 0.250 L to 0.125 L. If the temperature remains constant, what is the final pressure?
Monday, November 14, 2011 at 11:47pm by Mallory

Chemistry
For a given sample of CH3OH, the enthalpy change during the reaction is 82.6 kJ. How many grams of methane gas are produced?
Monday, March 5, 2012 at 6:51pm by Dylan

chemistry
2.85 sample of an unknown chlorofluorocarbon is decomposed and produces 558 of chlorine gas at a pressure of 756 and a temperature of 298 .
Sunday, July 22, 2012 at 6:36pm by des

Chemistry
To what temperature must a gas sample initally at 13 degrees be raised in order for the avarage energy of its molecules to double?
Friday, October 12, 2012 at 2:47pm by Anonymous

Statistics
According to the American Automobile Association (AAA), the mean cost of a gallon of regular unleaded fuel in 2007 was $2.835. AAA noted that the standard deviation of the fuel price was $0.15. A random sample of n=100 gas stations is selected and the mean gas price is ...
Sunday, June 23, 2013 at 5:00pm by Jerome

Chemistry!
4.5 moles O2 is correct for that part but why did you multiply by 1 L? 1 mole O2 at STP is 22.4 L so 4.5 moles x 22.4 L = ?? volume in liters for O2. 1 mole of any ideal gas occupies 22.4 L at STP.
Saturday, July 10, 2010 at 5:30pm by DrBob222

physics
A cylinder with a moveable piston holds 3.00 of argon at a constant temperature of 300 . As the gas is compressed isothermally, its pressure increases from 101 to 125 .Find the final volume of the gas.Find the work done by the gas.Find the heat added to the gas.
Thursday, December 9, 2010 at 1:15pm by demitri

Statistics
Are these statements true or false? 1. The sample mean, the sample proportion and the sample standard deviation are all unbiased estimators of the corresponding population parameters. 2. If the population is normally distributed with known variance then the sample mean may not...
Friday, November 5, 2010 at 5:03pm by help

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