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July 31, 2014

# Search: Under certain conditions, neon (Ne) gas diffuses at a rate of 7.0 centimeters per second. Under the same conditions, an unknown gas diffuses at a rate of 4.9 centimeters per second. What is the approximate molar mass of the unknown gas?

Number of results: 30,043

chemistry
Under certain conditions, neon (Ne) gas diffuses at a rate of 7.0 centimeters per second. Under the same conditions, an unknown gas diffuses at a rate of 4.9 centimeters per second. What is the approximate molar mass of the unknown gas?
October 31, 2010 by smith

chemistry
Under certain conditions, neon (Ne) gas diffuses at a rate of 4.5 centimeters per second. Under the same conditions, an unknown gas diffuses at a rate of 10.1 centimeters per second. What is the approximate molar mass of the unknown gas?
May 26, 2011 by Carly

chemistry
Under certain conditions, neon (Ne) gas diffuses at a rate of 7.0 centimeters per second. Under the same conditions, an unknown gas diffuses at a rate of 4.9 centimeters per second. What is the approximate molar mass of the unknown gas? 6.5 g/mol 11 g/mol 20 g/mol 41 g/mol
October 31, 2010 by smith

chemistry
If 0.45 mol of neon gas occupies a volume of 789 mL at a certain temperature and pressure, what volume would 0.376 mols of neon occupy under the same conditions? what Law is used to solve?
April 18, 2012 by Anonymous

Chemistry
Metals lose electrons under certain conditions to attain a noble-gas electron configuration. How many electrons must be lost by the element Ca? Is it 2 e^-? Which noble-gas electron configuration is attained in this process? argon radon krypton xenon helium neon
October 28, 2012 by Bill

Chemistry
A gas, Y, diffuses 1.05 times faster than SO2 gas at the same conditions. What is the molecular weight of gas Y?
December 3, 2013 by Krystal

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 sample containing 1.50 mol neon gas has a volume of 8.00L.what is the new volume of the gas in liters when the following changes occur in the quantity of the gas at constant pressure and temperature? a.a leak allows on-half of the neon atoms to escape. b. a sample of 25.0g ...
June 27, 2010 by Jetta

grahams law
If a molecule of O3 diffuses a certain distance in 3500 s, how long (s) would it take a molecule of Cl2 to diffuse the same distance at the same temperature and under the same conditions?
April 12, 2011 by Matty

chemistry
what is the molar mass of the unknown gas that diffuses 0.250 times as fast as hydrogen gas under the same circumstances?
August 9, 2011 by Aamna Qamar

chemistry
The rate of effusion of a particular gas was measured and found to be 25.0 mL/min. Under the same conditions, the rate of effusion of pure methane (CH4) gas is 46.4 mL/min. What is the molar mass of the unknown gas?
October 31, 2010 by Mattie

chemistry
The rate of effusion of a particular gas was measured and found to be 23.0 mL/min. Under the same conditions, the rate of effusion of pure methane (CH4) gas is 46.2 mL/min. What is the molar mass of the unknown gas?
November 7, 2010 by Anonymous

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

Neon
I need to find out the cost of the inert gas, Neon and it's Normal Phase to finish off a project. I have searched and searched but can't come up with the info needed. Neon is a rare gas, obtained by liquifing air. Its cost for very pure form is about thirty dollars per ten ...
October 16, 2006 by Holly

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

ap chemistry
Under certain conditions, the reaction 3A + 2B -> 4C was observed to proceed at a rate of 0.00348 M· s−1. What was the corresponding rate of change in reactant A?
November 6, 2013 by gabriella

chemistry
If the ratio of the rate of effusion of an unknown gas to that of CO under the same conditions is 0.7978, calculate the molar mass (g/mol) of the gas
January 15, 2010 by eng

Chemistry #27
If He(g) has an average kinetic energy of 4410 J/mol under certain conditions, what is the root mean square speed of O2(g) molecules under the same conditions?
October 13, 2013 by Chelsea

chemistry
a 0.25 mol sample af neon gas at 18 C and 0.700 atm is heated to 40 C. the new gas pressure is 1.11 atm. what is the change in volumn of the neon gas?
February 4, 2013 by james

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

Chem hw!
1. What pressure would be needed to compress 25.1 mL of hydrogen at 1.01 atm to 25% of its original volume? 2. If the pressure on a 1.04-L sample of gas is doubled at constant temperature, what will be the new volume of the gas? 3. A 1.04-L sample of gas at 759 mm Hg pressure ...
March 11, 2010 by Teisha

Chem hw!
1. What pressure would be needed to compress 25.1 mL of hydrogen at 1.01 atm to 25% of its original volume? 2. If the pressure on a 1.04-L sample of gas is doubled at constant temperature, what will be the new volume of the gas? 3. A 1.04-L sample of gas at 759 mm Hg pressure ...
March 11, 2010 by Teisha

Krypton gas is four times denser than neon gas at the same temperature and pressure. Which gas is predicted to effuse faster? i got neon which is correct but How much faster? how many times? i dont know how to get htis
January 8, 2013 by Samantha

gas laws chemistry
A neon sign is made of glass tubing with an inside diameter of 12.7 mm and length of 16.0 m. If the sign contains neon at a pressure of 7.56 torr at 33°C, how much neon is in the sign?
March 17, 2012 by harley

chemistry
Solid white P melts then vaporizes at high temperatures. Gaseous white P effuses at a rate that is 0.404 times that of neon in the same apparatus under the same conditions. How many atoms are in a molecule of gaseous white phosphorus?
February 20, 2013 by sally

sciencee
1. What pressure would be needed to compress 25.1 mL of hydrogen at 1.01 atm to 25% of its original volume? 2. If the pressure on a 1.04-L sample of gas is doubled at constant temperature, what will be the new volume of the gas? 3. A 1.04-L sample of gas at 759 mm Hg pressure ...
March 9, 2010 by Teisha

Chemistry
"The analyzer said that at 20degreesC the unknown gas was 82.8% carbon by weight and 17.2% hydrogen. The analyzer also diffused the gas through a special apparatus and measured the rate of its diffusion compared to how fast oxygen gas diffused under the same conditions. The ...
January 17, 2011 by Anonymous

Chemistry
"The analyzer said that at 20degreesC the unknown gas was 82.8% carbon by weight and 17.2% hydrogen. The analyzer also diffused the gas through a special apparatus and measured the rate of its diffusion compared to how fast oxygen gas diffused under the same conditions. The ...
January 17, 2011 by Anonymous

chem
compund containing only C, H, and N yeilds the following data- 1. complete combustion of 34.3 mg of the compund producedmg of CO2 and 40.3 mg of H2O 2. a 65.2mg sample was analyzed by the dumas mthod, giving 35.6 mL of N2 at 740 torr and 25C 3. effusion rate as a gas was 24....
November 16, 2007 by mel

Chem
One of my questions asks me to find the volume of neon gas. I thought neon didn't attach with other atoms because it had a full valence shell, how would it form into a gas? What would the formula be? N2, N3 ?
July 6, 2009 by Lena

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

Science
Would you normally expect neon (Ne) to form compounds? A. Yes, but neon is a rare gas and difficult to obtain. B. No, neon needs six electrons to fill its outermost level. C. Yes, neon needs six electrons to fill its outermost level. D. No, neon has eight electrons in its ...
October 10, 2011 by Anonymous

Chemistry
Consider a sample of helium and a sample of neon, both at 30ºC and 1.5atm. Both samples have a volume of 5.0 liters. Which statement concerning these samples is not true? a- each weighs the same amount b- each has the same # of atoms of gas c- the density of the neon is ...
November 6, 2009 by John S.

Neon
What is the normal phase? Neon is a gas at room temp and pressure. yo mamma.
November 12, 2006 by Vicky

Chemistry
A compound containing only C, H, and N yields the following data. (i) Complete combustion of 34.8 mg of the compound produced 33.3 mg of CO2 and 40.9 mg of H2O. (ii) A 66.3-mg sample of the compound was analyzed for nitrogen by the Dumas method, giving 36.2 mL of N2 at 740. ...
November 20, 2012 by Darrel

chem
At what temperature will a 1.0 g sample of neon gas exert a pressure of 500 torr in a 5.0 L container ? or At what temperature will a 0.0470 mol of a gas fill a balloon to 1.20 L under 0.988 atm pressure ?
May 14, 2012 by katie

Chemistry
a real gas would behave most like an ideal gas under conditions of
November 18, 2011 by tom

chemistry 2
A gas diffuses only 0.5 times as fast as an oxygen molecule at the same temperature. What is the molecular weight of the gas?
February 16, 2010 by Bob

calculus help thanks!
The gas law for an ideal gas at absolute temperature T (in kelvins), pressure P (in atmospheres), and volume V (in liters) is PV = nRT, where n is the number of moles of the gas and R = 0.0821 is the gas constant. Suppose that, at a certain instant, P = 8.0 atm and is ...
April 2, 2014 by Pal

Applied Calculus......
Under a set of controlled laboratory conditions, the size of the population of a certain bacteria culture at time t (in minutes) is described by the following function. P=f(t)=3t^2+2t+1 Find the rate of population growth at t = 9 min.
February 7, 2013 by Jacob

chemistry
a real gas is introduced to a flask of volume v. is the corrected volume of the gas greater or less than V? Ammonia has a larger a value than neon does. What can you conclude about the relative strength of the attractive forces between molecules of ammonia and between atoms of...
November 2, 2012 by Justme

chemistry
How do you compute the rate of effusion of one gas compared to another, like Neon to CBr4?
March 16, 2011 by Suzanne

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

A gas, while expanding under isobaric conditions, does 660 J of work. The pressure of the gas is 1.40 x 105 Pa, and its initial volume is 1.70 x 10-3 m3. What is the final volume of the gas? Would I multiply the two values?
June 21, 2012 by Hannah

chemistry
O2 effuses at a rate that is _____ times that of Xe under the same conditions. rate 02/rate x2 = ?
June 21, 2013 by Annie

chemistry
during an effusion experiment, oxygen gas passed through a tiny hole 2.5 times faster than the same number of moles in another gas under the same conditions. What is the molar mass of the unknown gas?
July 5, 2014 by Brooklynne

physics
A sealed container contains 1 mole of neon gas at STP. Estimate the number of neon atoms having speeds in the range from 200 m/s to 202 m/s. (Hint: Assume the probability of neon atoms having speeds between 200 m/s and 202 m/s is constant).
April 17, 2012 by zuhra

physics
A sealed container contains 1 mole of neon gas at STP. Estimate the number of neon atoms having speeds in the range from 200 m/s to 202 m/s. (Hint: Assume the probability of neon atoms having speeds between 200 m/s and 202 m/s is constant).
April 18, 2012 by zuhra

chemistry
A sample of neon gas used in a neon sign occupies a volume of 3.90 L at a pressure of 580 torr. Calculate the volume of the gas if the pressure in the glass tube of the sign is 783 torr.
April 24, 2012 by Anonymous

Calculus
Under a set of controlled laboratory conditions, the size of the population of a certain bacteria culture at time t (in minutes) is described by the following function. P = f(t) = 3t^2 + 2t + 1 Find the rate of population growth at t = 10 min. bacteria per minute
June 7, 2013 by Tee

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
How do I figure this out? If argon diffuses at a rate of 15, what rate does krypton diffuse at?
February 26, 2009 by kayla

Chemistry
The equilibrium constant for the reaction of bromine and chlorine to form bromine chloride under certain conditions is 4.7x10-2. Cl2(g) + Br2(g) --> 2BrCl(g) K= 4.7 x 10-2 What is the equilibrium constant for the following reaction under the same conditions? 1/2 Cl2(g) + 1/...
November 3, 2007 by Dan

Chemistry
What is the final volume of 725 mL of neon gas at 240.°C if the gas is cooled to 54.5°C? Assume the pressure and the amount of gas are held constant.
May 1, 2010 by Tiffany

Chemistry
What is the final volume of 945 mL of neon gas at 174°C if the gas is cooled to 58.5°C? Assume the pressure and the amount of gas are held constant.
April 14, 2011 by Mary

chem
Krypton gas is four times denser than neon gas at the same temperature and pressure. Which gas is predicted to effuse faster?
January 8, 2013 by Samantha

AP Chemistry
The rate of effusion of unknown gas X is found to be about 1.5 times that of SF6 gas (MW=146 g/mol) at the same conditions of temperature and pressure. What is the molecular weight of gas X? Answer in units of g/mol
February 16, 2014 by Gabriella

Chemistry
I am totally confused. Does my answer make sense or do I need to start over? The more I read it the more I doubt my answer. I am also confused when it states Please be specific. Is it looking for a specific number for the temperature and pressure or just the conditions? Under ...
January 31, 2008 by Jamie

Chemistry
If 3.21 mol of a gas occupies 56.2L at 44C and a pressure of 793 torr, what volume will 5.29 mol of this gas occupy under the same conditions? (A) 61.7 L (B) 30.9 L (C) 14.7 L (D) 92.6 L (E) 478 L
January 1, 2010 by Anonymous

Chemistry
If 3.21 mol of a gas occupies 56.2L at 44C and a pressure of 793 torr, what volume will 5.29 mol of this gas occupy under the same conditions? (A) 61.7 L (B) 30.9 L (C) 14.7 L (D) 92.6 L (E) 478 L is it d, 92.6 L?
January 3, 2010 by Anonymous

Chemistry
Nitrogen and hydrogen, with volumes of 12.0 L each, are injected into a sealed rigid reaction chamber containing a catalyst. The pressure of the chamber is 8.00 atmospheres and at a known temperature. The reaction is allowed to proceed to completion while being maintained at a...
August 10, 2011 by Neha

Chemistry
Which gas diffuses most rapidly at STP? Ar, Kr, N2, or O2? Why?
January 17, 2014 by !

chem
An unknown gas Q requires 1.80 times as long to effuse under the same conditions as the same amount of nitrogen gas. What is the molar mass (g/mol) of Q?
October 12, 2009 by Sheena

chemistry
An unknown gas Q requires 2.17 times as long to effuse under the same conditions as the same amount of nitrogen gas. What is the molar mass (g/mol) of Q?
March 4, 2011 by ria

algebra 1A
at the local per store, zebra fish cost $2.10 each and neon tetras cost$1.80 each. if marsha bought 13 fish for a total of \$25.80, not including tax, how many of each type of fish did she buy? a)7 zebra, 6 neon b)8 zebra, 5 neon c)6 zebra, 7 neon d)5 zebra, 8 neon
May 14, 2012 by loraine

Chemistry
A toy balloon originally held 1.00 g of helium gas and had a radius of 10.0 cm. During the night, 0.25 g of the gas effused from the balloon. Assuming ideal gas behavior under these constant pressure and temperature conditions, what was the radius of the balloon the next morning?
September 12, 2012 by Dia B

Chemistry
At pressures greater than 60,000 kPa, how does the volume of a real gas compare with the volume of an ideal gas under the same conditions? A.)It is much greater. B.)It is much less. C.)There is no difference. D.)It depends on the type of gas. I think it's A. Thank You.
January 17, 2013 by Deborah

At pressures greater than 60,000 kPa, how does the volume of a real gas compare with the volume of an ideal gas under the same conditions? A.)It is much greater. B.)It is much less. C.)There is no difference. D.)It depends on the type of gas. I think it is A. Thank You.
January 20, 2013 by Deborah

Chemistry
It takes 32 seconds for a certain number of moles of H2 to effuse through a leak in a tank. An unknown gas was later places under the same conditions; it took 1:39 for the same number of moles to effuse. Find the molecular mass of the gas. I set it up like this: rate of ...
January 7, 2007 by John

Science-Biology
why do plants grow better under certain lighting conditions than others?
October 5, 2012 by Lulu

Chemistry
Consider a sample of helium and a sample of neon, both at 30ºC and 1.5atm. Both samples have a volume of 5.0 liters. Which statement concerning these samples is not true? a- each weighs the same amount b- each has the same # of atoms of gas c- the density of the neon is ...
November 6, 2009 by John S.

Chemistry
a sample of gas of unknown pressure occupies 0.766 L at the temperture of 298k the same sample of gas is than tested under known conditions and has the pressure of 32.6kPa and occupies 0.664 L at 303 k. What is the original pressure of gas
July 13, 2011 by Rocky

stats
The rate of chlamydia infection was reported as 2.78% in a recent year. Under certain conditions, a preliminary screening test for the chlamydia bacterium is correct 96% of the time. One person is randomly selected from the population. find the true positive. Can someone ...
March 6, 2013 by mark

Finance
Calculate die after-tax cost of debt under each of the following conditions: a. Interest rate of 13%, tax rate of 0% b. Interest rate of 13%, tax rate of 20% c. Interest rate of 13%, tax rate of 35%
December 5, 2010 by Anonymo

Chemistry
Consider the following chemical equation: 2NO2-->N2O4 If 25.0mL of NO2 gas is completely converted to N2O4 gas under the same conditions, what volume will the N2O4 occupy?
July 2, 2010 by Victoria

Chemistry
Samples of Neon and helium are placed in separate containers connected by a pinched rubber tube. There is 5.00 liters of neon at a pressure of 634 mm Hg in the first container. The second container has 3.00 liters of helium at 522 mm Hg. When the clamp is removed from the ...
February 18, 2011 by T

gas laws
A balloon contains 10.0g of neon gas. With T kept constant, 10.0g of argon gas is added, and the volume of the balloon expands by less than 2 times. Why?
November 13, 2012 by Parkin

gas laws
A balloon contains 10.0g of neon gas. With T kept constant, 10.0g of argon gas is added, and the volume of the balloon expands by less than 2 times. Why?
November 13, 2012 by Parkin

Chemistry
What is the molecular mass of a gas that diffuses through a porous membrane 1.86 times faster than Xe?
April 27, 2014 by Tyler

science
how does the massof an atom affect the rate it diffuses
January 19, 2008 by josephine

chemistry
A 0.12-mole sample of nitrogen gas occupies a volume of 2.55 L. What is the volume of 0.32 mol of nitrogen gas under the same conditions?
December 9, 2011 by BB

chemistry
Under standard conditions, the Gibbs free energy of the reactants G,std(reactants) in a reaction in the gas phase is 232.94 kJ and the Gibbs free energy of the products G,std(products) is 211.56 kJ. Calculate the value of the equilibrium constant for this reaction under ...
April 28, 2014 by bekah

Chem 130
If 2.03 g of helium gas occupies a volume of 12.0 L at 22°C, what volume will 6.19 g of helium gas occupy under the same conditions?
May 5, 2014 by michelle

Physics
Two ideal gases have the same mass density and the same absolute pressure. One of the gases is helium (He), and its temperature is 298 K. The other gas is neon (Ne). What is the temperature of the neon?
December 3, 2012 by Frustrated

chemistry
If 1.00 {\rm mol} of {\rm{N}}_2 has a volume of 47.0 {\rm L} under the reaction conditions, how many liters of gas can be formed by heating 38.5 g of {\rm{NaN}}_3
September 30, 2010 by Anonymous

Biochemistry
In yeast, ethanol is produced from glucose under anaerobic conditions. What is the maximum amount of ethanol (in millimoles) that could theoretically be produced under the following conditions? A cell-free yeast extract is placed in a solution that contains 3.50 × 102 mmol ...
April 8, 2013 by Josh

Biochem
In yeast, ethanol is produced from glucose under anaerobic conditions. What is the maximum amount of ethanol (in millimoles) that could theoretically be produced under the following conditions? A cell-free yeast extract is placed in a solution that contains 2.50 × 102 mmol ...
October 30, 2013 by B

BioChem
In yeast, ethanol is produced from glucose under anaerobic conditions. What is the maximum amount of ethanol (in millimoles) that could theoretically be produced under the following conditions? A cell-free yeast extract is placed in a solution that contains 2.50 × 102 mmol ...
October 30, 2013 by B

chemistry
A fixed amount of gas initially at 100 K and pressure P1 is expanded from 1 L to 100 L in a piston. The temperature, T2, of the gas at this point is 50 K. The piston is then locked at constant volume V2=100 L and half the gas is pumped out at a constant temperature of T2 . The...
December 5, 2011 by laura

chemistry
A 9.96 mol sample of methane gas is maintained in a 0.836 L container at 296 K. What is the pressure in atm calculated using the van der Waals' equation for CH4 gas under these conditions? For CH4, a = 2.25 L2atm/mol2 and b = 4.28E-2 L/mol.
January 29, 2012 by jim

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...
October 16, 2010 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...
October 16, 2010 by J Velji

chemistry
Nitric acid can be produced by the reaction of gaseous nitrogen dioxide with water. 3NO2(g) + H2O() −! 2HNO3() + NO(g) If 745 L of NO2 gas react with water, what volume of NO gas will be produced? As- sume the gases are measured under the same conditions.
February 7, 2012 by Aaron

chemistry
Under what conditions of temperature and pressure do you think that the gas laws would work best? List specifics.
January 29, 2008 by Cindy

chemisrty
Under what conditions of temperature and pressure do you think that the gas laws would work best? Please be specific
September 29, 2009 by Anonymous

AP Chemistry
I think this is a units issue, i keep getting the wrong answer. the formula should be rate1/rate2= (molar mas 2/ molar mass1)^1/2 but every time i do it, i get it wrong, and when i do rate1/rate2= (molar mas 1/ molar mass2)^1/2, i get the right answer. It takes 140 SECONDS for...
October 5, 2008 by Emily

Chem
In an experiment, 25.0 ml of a gas with a pressure of 1. atm is contained in a balloon at 25.0 c. The Balloon is then cooled to 5.0 c, and the pressure is found to be .750 atm. What is the volume of the gas under the new conditions?
June 29, 2011 by Chris

Chemistry
In an experiment, 25.0 mL of a gas with a pressure of 1.00 atm is contained in a balloon at 25.0°C. The balloon is then cooled to 5.0°C, and the pressure is found to be 0.750 atm. What is the volume of the gas under the new conditions?
November 6, 2012 by Brittany

ethics
If you are an employee of a business, and learn that it is violating the law, what would you do in this situation? What are your ethical obligations? Under what conditions would you report the illegal activities? Under what conditions would you keep quiet?
November 30, 2010 by Anonymous

science
A substance that loses its shape under certain conditions is called what? A liquid takes the shape of its container.
February 28, 2007 by Sarah

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