November 24, 2014

Search: gas

Number of results: 7,472

A gas occupying 10 mL at standard conditions is heated to 10◦C while the pressure is reduced to 0.92114 atm. What is the new volume occupied by the gas? Answer in units of mL
May 30, 2014 by a

If 500 mol of hydrogen gas occupies 5.00L at 25 celsius, what is the pressure in atm? I believe this is Ideal gas law. I can't figure out how to put it in the PV=nRT.
November 9, 2014 by Anonymous

You need to mix some gas and oil in a 20:1 gas-oil-ratio. If you have 15 gallons of gas, how many gallons of oil do you need?
May 7, 2012 by HELPPPPP!

a tank of ideal gas is sealed off at 20 degrees C and 1.00 atm pressure. What will be the pressure (in kPa and mmHg) in the tank if the gas temperature is decreased to -35degrees C ? the book answer is 82kPa = 6.2 x10^2 mmHg can you help me figure out how the book got this ...
March 6, 2010 by phyllis

Each of four identical tires of a car is filled with a different gas. Gas pressure in each tire is 3.0 atm at 25oC. One tire contains neon, another argon, the 3rd one has krypton, and the last one has unknown gas. How many molecules are there in each tire? So far, I have ...
November 12, 2008 by Jordan

Identify the limiting and excess reagent for each of the following scenarios involving the formation of silicone dioxide, SiO2. If you could just get geared in the right direction that would be wonderful. I am just a bit confused with this question. Thank you. a. 2 atoms of ...
February 29, 2012 by Danielle

algebra 2
mona lives in florida. she drives 550 miles to texas. her car's tank holds 15 gallons of gas and she gets an average of 25 miles per gallon of gas. if mona fills up her gas tank before she leaves, how many more times will she have to fill up the tank to drive to texas and back...
August 30, 2014 by taylor

Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.6 L of water upon warming from 25 C to 50 C. Assume that the water is initially saturated with nitrogen and oxygen gas at 25 C and a total ...
September 17, 2009 by RE

physics (gas laws)
I have a packet of homework so I think I may post other questions that I'm stuck on later this weekend. So thats a heads up. This packet deals with Gas Laws. 1. Given 100 ml of dry gas measured at 37 C and 760 mmHg, what would be its volume at 60C? I used Charle's Law and ...
January 26, 2008 by abby

How many grams of water (H_2O) have the same number of oxygen atoms as 1.0 (mol} of oxygen gas? atomic mass of H is 1 and O is 16, so H2O has a molar mass of 18. Oxygen gas is O2, with a molar mass of 32. So 1.0 mole of oxygen gas has 6.02x10^23 molecules = 12.04x10^23 oxygen ...
November 18, 2009 by ana

An aqueous solution of ammonium nitrite decomposes when heated to give off nitogen gas and water. This reaction can be used to prepare pure nitrogen gas. How many grams of ammonium nitrite must have reacted if 3.75 liters of nitrogen gas was colleced over water at 25˚C ...
October 20, 2014 by Anonymous

Three moles of an ideal gas are compressed from 5.5*10^-2 to 2.5*10^-2 m^3. During the compression, 6.1*10^3J of work is done on the gas, and heat is removed to keep the temperature of the gas constant at all times. Find the temperature of the gas. I posted this question few ...
March 2, 2008 by sTELLA

A particular gas has a desnity of 11.98 g/dm^3 when the pressure is 138.4 kPa at a temp of 175 degrees F. What is the GMW of this gas? If it is a diatomic gas can you identify the element? dm^3 = L. so it's 11.98 g/L. then i converted 139.4 kPa to 1.37 atm. then i converted ...
September 6, 2007 by Matt

You have 1L of an ideal gas at 0 degree celsius and 10 atm pressure. You allow the gas to expand against a constant external pressure of 1 atm, while the temperature remains constant. Assuming, 101.3 J/liter-atm, find q,w,delta E, and delta H in Joules, A) if the expansion ...
November 25, 2011 by John

A sample of monatomic gas ( = 5/3) is expanded adiabatically from an initial temperature, volume, and pressure of 230. C, 7.00 litres, and 7.00 kPa, respectively, to a final volume of 10.0 litres. (a) What is the final pressure of the gas? (answer 3.86 kPa) (b) How much work...
May 2, 2010 by Chris

1. gas to liquid 2. liquid to gas 3. solid to gas 4. solid to liquid 5. gas to solid 6. liquid to solid Please label the reactions above into the groups: ΔH=+, ΔS=+ ΔH=+, ΔS=- ΔH=-, ΔS=+ ΔH=-, Δs=-
December 2, 2012 by HELP!

A sample of gas at P = 1123 Pa, V = 1.41 L, and T = 291 K is confined in a cylinder a) Find the new pressure if the volume is reduced to half of the original volume at the same temperature. b) If the temperature is raised to 391 K in the process of part (a), what is the new ...
December 27, 2011 by maria

in a thermonuclear device, the pressure of 0.050 liters of gas within the bomb casing reaches 4000000 atm. when the bomb casing is destroyed by the explosion, the gas is released into the atmosphere where it reaches a pressure of 1.00 atm. what is the volume of the gas after ...
December 3, 2013 by Elizabeth

Oxygen gas reacts with powdered aluminum according to the following reaction: 4Al(s)+3 O2(g) --> 2 Al2O3 (s) How many liters of O2 gas, measured at 789 mm Hg and 35 C, are required to completely react with 2.2 mol of Al?
April 16, 2010 by Eileen

To what Celsius temperature must 44.5 mL of methane gas at 43.0C be changed so the volume will be 63.0 mL? Assume the pressure and the amount of gas are held constant. I have already tried T1V1=T2V2
May 2, 2010 by Megan

In cold climates, methanol is often used as a gasoline antifreeze and an additive of winer gas. How does it remove water vapour an ice from the gas tank and the fuel line?
June 14, 2010 by Amy

Use the ideal gas equation to answer this question. (Recall that R is .0821 L atm/K mol. ) What pressure is exerted by .35 moles of a gas at 23 0 C if it is held in a container with a volume of 2.3 liters?
March 30, 2012 by Anonymous

thermodynamics and kinetics
One mole of an ideal gas undergoes an isothermal reversible expansion, doing 1 kJ of work and doubling the volume. What is its final temperature? How much heat was added to the gas?
October 12, 2012 by Dorota

Chemistry 3A
in a lab experiment, 133mL of gas was collected over water at 24 degrees Celsius and 742 torr. Calculate the volume that the dry gas would occupy at STP.
December 4, 2012 by Gurjot

Assuming the temperature and pressure are held constant, which of the gas samples has the greatest number of gas particles? Answer 45.0 mL O3 35.0 mL N2 15.0 mL of CO2 25.0 mL of SO3 how would i go about answering this question.
January 19, 2013 by jakey

Suppose that the pressure of an ideal gas mixture remains constant at 1700 Pa (1 Pa = 1 N/m2) and the temperature is increased from 400K to 800K. How much work does the gas do to the surroundings during expansion?
March 1, 2013 by Angela

if a person uses 40 to 45gallons of gas and pays $2.96 to $3.61 a gallon, how much money will pay for gas every week. I have no idea how to solve it,so if someone if is willing to help me i appreciate the help.Thank you
April 29, 2013 by rally

physics/chemistry(kinetic ..gasses)
How many degreed of freedom have the gas molecules,if under standard conditions the gas dendity is 1.3kg/m^3 and velocity of sound propagation on it is v=330m/s?
May 13, 2013 by duke

Chemistry. CONVENT
An unknown gas shows a density of 2.39 gms per litre at 100 degrees centigrade and 715 mm presure. Wht is the gram molecular weight of the gas
July 13, 2013 by b.s. chandrashekar

an astronaut has a mass of 100 kg. she recedes from her spacecraft using spurts of gas from a small unit on her back. if the force generated by the gas spurt is 50N, calculate her acceleration?
February 5, 2014 by Emily

A Venturi meter is a device for measuring the speed of a fluid within a pipe. The drawing shows a gas flowing at speed v2 through a horizontal section of pipe whose cross-sectional area is A2 = 0.0769 m2. The gas has a density of ρ = 1.30 kg/m3. The Venturi meter has a ...
November 22, 2014 by Archy

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

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

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

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

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

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

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

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

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

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

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

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

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

(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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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