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September 19, 2014

Search: gas

Number of results: 7,239

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 29, 2013 by Blair

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

science
15. Two 5 dm3 flasks are connected by by a narrow tube of negligible volume. Initially the two flasks are both at 27 oC and contain a total of 2 moles of an ideal gas. One flask is heated to a uniform temperature of 127 oC while the other is kept at 27 oC. Assuming their ...
November 14, 2012 by mahatta

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

Ap chem question 2 related to the first question
Calculate the volume of gas you would expect to be evolved in X mol of magnesium were reacted with an excess of HCl at standard conditions. I'm going to tell you what my father told me...LOOK IT UP thanks for the unnecessary comment! Mg + 2HCl ==> MgCl2 + H2 1 mol Mg will ...
October 22, 2006 by Justyna

chemistry urgent
hydrogen gas is collected in a bottle, and the pressure of the gas is 892 torr at 24 C. what is the pressure of hydrogen gas when the temperature decreases to 20 C? chemistry - DrBob222, Tuesday, November 30, 2010 at 1:25pm (P1/T1) = (P2/T2) Dear Dr Bob: is this a right ...
November 30, 2010 by Lynn

stoichiometry
Ammonia gas reacts with oxygen gas according to the following equation: 4NH3 + 5O2----4NO + 6H2O a. How many moles of oxygen gas are needed to react with 23 moles of ammonia? (29 mole) b. How may grams of NO are produced when 25 moles of oxygen gas react with an excess of ...
February 9, 2011 by Jonathan

Math Middle
I used my gas tank and used 7/16 of gas. Then I used another 1/3 of the remaining gas what fraction of the tank is filled with gasoline. My Answer is 7/8 of the tank is filled.
October 7, 2013 by Mary

chemistry
A gas 'x' is collected over water at 17 degree celcius and 750 mm pressure.If the volume of the gas collected is 50 cc then calculate the volume of the dry gas at standard temperature pressure and at 17 degree celcius the vapour of pressure is 14 mm
September 14, 2011 by Samay

chemm
A car air bag requires 70. L of nitrogen gas to inflate properly. The following equation represents the production of nitrogen gas: 2NAN subscript 3 yielding 2NA + 3N subscript 2 the density of nitrogen gas is typically 1.16 g/L at room temperature. How would you calculate the...
April 27, 2010 by Sienna

Chemistry
Under identical conditions, separate samples of O2 and an unknown gas were allowed to effuse through identical membranes simultaneously. After a certain amount of time, it was found that 4.92 mL of O2 had passed through the membrane, but only 3.04 mL of of the unknown gas had ...
April 15, 2014 by Peter

chemistry
1)how many molecules of water are needed to produce 6 molecules of C6H12O6 according to the equation 6CO2(G)+6H2O(L)+energy TO C6H12O6(S)+6O2(G)? 2)how many mole of oxygen gas are produce when 6 mol of CO2 are consumed in the process of photosynthesis(see above question for ...
January 18, 2011 by 000

science
1)how many molecules of water are needed to produce 6 molecules of C6H12O6 according to the equation 6CO2(G)+6H2O(L)+energy TO C6H12O6(S)+6O2(G)? 2)how many mole of oxygen gas are produce when 6 mol of CO2 are consumed in the process of photosynthesis(see above question for ...
January 18, 2011 by 000

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

Algebra
suppose you are at the gas station filing your tank with gas. the function C(g) represents the cost C of filling up the gas tank with g gallons give the equation: C(g)=3.03(g) A)what does the number 3.03 represent? B)find C(2) C)find C (9) D) for the average motorist, name one...
July 18, 2009 by Patty G

chem
I am having lots of trouble with these questions: Classify each of the following reactions in as many ways as possible. (Select all that apply.) a)2 Rb(s) + Br2(g) 2 RbBr(s) you can select: -acid-base -double-displacement -gas evolution -oxidation-reduction -precipitation -...
November 29, 2010 by hannah

physics/chemistry
(a) An ideal gas occupies a volume of 1.0 cm3 at 20C and atmospheric pressure. Determine the number of molecules of gas in the container. i got that right to be 2.5e19 molecules (b) If the pressure of the 1.0 cm3 volume is reduced to 1.0 10-11 Pa (an extremely good vacuum) ...
January 3, 2011 by kate

chemistry
1) 1.12 dm3 of a gas at STP is found to weigh 3.55g.Find molecular weight and vapour density of gas 2)5.6 dm3 of a gas at STP weighs 11g Find out its relative molecular mass & vapour density
August 15, 2014 by anu

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

chemistry
When ammonia gas is burned in oxygen the products formed are water and nitrogen monoxide gas. Write the balanced equation showing this reaction NH4 + O2 --> H2O + NO i am stuck balancing this
January 23, 2009 by lyne

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.
August 28, 2011 by Devin Boutte

Chemistry
What is the pressure in millimeters of mercury of 0.0155 mole of He gas with a volume of 206 mL at a temperature of 30 degrees C? I used the ideal gas law and ended up with 1.87 mmHg but it said that was wrong. Please help.
December 3, 2011 by Lisa

science
A gas is confined to a cylinder under constant atmospheric pressure, as illustrated in the figure below. When 0.46 kJ of heat is added to the gas, it expands and does 186 J of work on the surroundings. What are the values of H and E for this process?
December 17, 2012 by Samantha

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?
March 1, 2014 by abby

Chemistry
How many moles of ammonia gas can be formed from the complete reaction of 44.8 liters of nitrogen gas at standard temperature and pressure (STP), according to the balanced equation, N2 (g) + 3H2 (g) arrow 2NH3 (g)?
March 13, 2014 by Diana

Physics
As its volume is doubled from an initial value of 0.088 m3, a sample of gas is held at a constant pressure of 3.4 104 Pa by heating. Then, while a constant volume is maintained, the gas is cooled back to its initial temperature. The work that the gas does on the environment ...
June 21, 2012 by Kaley

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

Physics
Exploration 2: the Effect of Mass on Gas Behavior Procedure 1. Set the temperature at 500 K. Maintain this temperature throughout this Exploration. 2. Select Hydrogen gas from the list box. Record the most probable particle speed and the average particle speed in Table 2. Gas...
July 19, 2012 by Alfrieda

Physics HELP!!!!!!!!
Suppose a monatomic ideal gas is contained within a vertical cylinder that is fitted with a movable piston. The piston is frictionless and has a negligible mass. The area of the piston is 3.06 10-2 m2, and the pressure outside the cylinder is 1.02 105 Pa. Heat (2109 J) is ...
April 21, 2007 by Mary

Chemistry
utomotive air bags inflate when sodium azide, NaN3, rapidly decomposes to its component elements. 2 NaN3(s) → 2 Na(s) + 3 N2(g) (a) How many moles of N2 are produced by the decomposition of 3.50 moles of NaN3? (b) How many grams of NaN3 are required to form 16.0 g of ...
August 23, 2011 by Bles

PHYSICS
One mole of oxygen gas is at a pressure of 5.25 atm and a temperature of 29.5C. (a) If the gas is heated at constant volume until the pressure triples, what is the final temperature? ____C (b) If the gas is heated so that both the pressure and volume are doubled, what is the...
November 14, 2012 by Sarah

math
Frank's car can travel 30 miles per gallon of gas. Janet's car can travel 20 miles per gallon of gas. Frank and Janet drive their own cars and they leave for a trip at 8.00AM on Friday. They arrive at their destination at 2.00AM the next day. Saturday, after driving at an ...
October 29, 2008 by daniela

Algebra
Suppose you are at the gas station filling your tank with gas, The function C(g) represents the cost C of filling the tank up the gas tank with g gallons. Give the equation: C(g)=3.03g a) What does the number 3.03 represent? The cost of one gallon of gas; C(g)=3.03(g). b)Find...
February 28, 2009 by A.W.

math
Motorists often complain about rising gas prices. Some motorists purchase fuel efficient vehicles and participate in trip reduction plans, such as carpooling and using alternative transportation. Other drivers try to drive only when necessary. Suppose you are at the gas ...
October 22, 2009 by Anonymous

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

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

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

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

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?
March 16, 2010 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)
March 27, 2010 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?
June 12, 2010 by lara

chemistry
Calculate the density of chlorine gas in g/L, at STP I'm coming up with 3.2g/L (by using 70.9 g Cl2) Cl gas is diatomic, correct? Is this correct?
October 19, 2010 by lavonne

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

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

chemistry
When an evacuated glass bulb at 75.0 ml volume is filled with a gas at 25.3 degrees C and 747 mm Hg, the bulb gains 0.0114g. The gas is?
October 27, 2010 by Tara

chemistry
The volume of a gas is 5.80 L, measured at 1.00 atm. What is the pressure of the gas in mmHg if the volume is changed to 9.65 L? (The temperature remains constant.)
November 15, 2010 by rasheedat

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?
May 30, 2011 by Anonymous

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

pressure
4 mL of gas in a piston (syringe) at 10oC and 0.75 atm is heated and expanded to 85oC and 8 mL. What is the pressure of the gas after the expansion?
November 6, 2011 by nja

Physics please help.
At 265 K, the pressure of 0.0454 mol of an ideal gas is 1.42105 Pa. What volume does the gas occupy? Please help!
June 22, 2012 by Teresa

Chemistry
The density of an unknown gas is 1.72 g/L at 750.0 torr and 30.0C. Which of the following could be the unknown gas? a. CS2 b. NO c. N2O d. NH3 e. N02
November 6, 2012 by Brittany

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

Chemistry
The solubility of a gas at 7.0 atm of pressure is 0.52 g/L . How many grams of the gas would be disolved per 1.0 L if the pressure increased 40.0 percent?
March 4, 2013 by Joy

Science
A gas has a volume of V1 = 550 mL. If the temperature is held constant, what volume would the gas occupy if P2 = 22 P1? Answer in units of mL
March 2, 2014 by Angela

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

Science
A certain gas expands in volume from 2.0L to 6.0L at constant temperature. Calculate the work done by the gas if it expands,against a vacuum.
May 6, 2014 by Luzongo

chemistry
A gas has a volume of V1 = 565 mL. If the temperature is held constant, what volume would the gas occupy if P2 = 16 P1? Answer in units of mL
May 30, 2014 by reis

chemistry
Why does this equation account for the fact that the gas volume is unchanged? H2Se + Sn ==> SnSe + H2 H2Se and H2 are gases. Sn and SnSe are solids. 1 mol gas and 1 mol of solid on the left. 1 mol gas and 1 mol solid on the right. Volume doesn't change.
February 26, 2007 by sarah

Physics
A rocket moving at 2000 m/s with a mass of 2000 kg releases gas at 500 m/s perpendicular to the direction of the rocket. The rocket moves at 18 degrees opposite of the direction that the gas was released. What is the mass of the gas released?
February 3, 2008 by Michael

chemistry
Density of phosgene gas, COCl2(MM=99) ander a certain condition is 4.5g/L. What is the density if H2S gas(MM=34) under the same conditions?
October 20, 2008 by annemarie

Chemistry
what volume of nitrous oxide gas, N2O has the same number of atoms as 9.00 L of neon gas at the same temperature and pressure
November 9, 2009 by Rodney

Chemistry
A gas occupies a volume of 140 mL at 35 degrees celcius and 97 kPa. What is the volume of the gas at STP? Please show the work.
February 23, 2010 by Maria

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.
April 22, 2010 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?
May 18, 2010 by werwer

chemistry
a sample of unknown gas is found to have a volume of 479 mL at 27.0 degrees C and 1.30 atm. How may moles of gas are int eh sample?
November 19, 2010 by Jazz

chemistry
the pressure on 200 milliliters of a gas at constant temperature is changed from 50.65 kPa to 101.3 kPa. what is the new volume of the gas?
December 18, 2010 by john

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?
February 9, 2011 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?
February 13, 2011 by twynna

chemistry
A backpacker carries 3.25 L of white gas as fuel for her stove. How many pounds does the fuel add to her load? Assume the density of the gas is 0.97 g/cm^3.
February 13, 2011 by Tonya

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?
February 20, 2011 by twynna

physics
a 64.0L gas tank is filled at 6.00C. the next day the temperature gets up to 27.00C how much gas (octance) voerflows?
February 28, 2011 by ricki

physics
a 64.0L gas tank is filled at 6.00C. the next day the temperature gets up to 27.00C how much gas (octance) voerflows?
February 28, 2011 by ricki

physics
a 64.0L gas tank is filled at 6.00C. the next day the temperature gets up to 27.00C how much gas (octance) voerflows?
February 28, 2011 by ricki

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?
March 10, 2011 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?
March 11, 2011 by n/a

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

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.
November 14, 2011 by mary

Chemistry
The pressure of a gas is affected by the number of particles and not affected by the kind of gas it is. What does this fact tell us about ideal gases?
January 19, 2012 by Marie

physical science
find the mass of sodium chloride formed when 6.9g of sodium burns in a gas jar filled with chlorine gas.
February 22, 2012 by winston

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?
March 20, 2012 by bobby

physics
2 moles of an ideal gas at 20k changes from a pressure of 15 atm to 3 atm at constant temperature. Calculate the work done by the gas.
March 21, 2012 by frank fred

chemistry
the volume at s.t.p. occupied by a gas q originally occupying 153.7 cc at 287 k and 750mm pressure, vapour pressure of gas q at 287k is 12 mm of hg
June 28, 2012 by Mayank Goswami

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?
July 26, 2012 by kris

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

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

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

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
February 11, 2013 by Anonymous

chemistry
The temperature of an ideal gas in a 5.00 L container originally at 1.01 bar pressure and 25 C is lowered to 220 K. Calculate the new pressure of the gas.
April 28, 2013 by Kat

chemistry
a sample of oxygen gas has a volume of 7.64 L at a temperature of 19C and a pressure of 1.38 atm. Calculate the moles of O2 present in this gas sample
May 8, 2013 by barbra

science
An 0.804 mol sample of hydrogen gas at a temperature of 16.0 oC is found to occupy a volume of 29.2 liters. The pressure of this gas sample is mm Hg.
September 1, 2013 by Anonymous

science
An 0.804 mol sample of hydrogen gas at a temperature of 16.0 oC is found to occupy a volume of 29.2 liters. The pressure of this gas sample is mm Hg.
September 1, 2013 by Anonymous

chemistry
A sample of nitrogen gas is confined in a 8.278 x 10-2 L container at 2.236 x 102 torr and 50 oC. How many moles of gas are present in the sample?
January 27, 2014 by erin

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.
February 14, 2014 by Harry

chemistry
An 0.727 mol sample of argon gas at a temperature of 22.0 C is found to occupy a volume of 26.2 liters. The pressure of this gas sample is how many mm Hg?
May 5, 2014 by Sarah

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

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

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

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

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

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

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