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1. ### Calculate the mass in grams of CO2 gas which will occupy 100cm3 at 250 degrees C and 5 atmospheres pressure?

... Let’s use the following equation to determine the volume at STP. P1 * V1/T1 = P2 * V2/T2 5 * 100/ 523 = 1...

2 Answers · Science & Mathematics · 28/11/2013

2. ### How many molecules are there in one cubic meter of radon at STP?

= N/0.0224 = 6.022E23/0.0224 = 2.688E25 molecules This number is the same for any gas

2 Answers · Science & Mathematics · 18/11/2013

3. ### The pressure of air in your house can stay constant during the day if the temperature rises....?

...the house during the daytime. This needs to be converted to STP before calculating the number of moles. I assume that...

1 Answers · Science & Mathematics · 10/11/2013

4. ### if 3 meters cube of a gas initially at stp is placed under a pressure of 4.00 atm the temperature of the gas?

Go back to the lesson on "combined gas law" and learn it. You need to know that perfectly. It is entirely expressed in one equation: PV = NRT where P = Pressure V = Volume N= quantity of gas R...

1 Answers · Science & Mathematics · 21/09/2013

5. ### what is the standard temperature?

In the context of chemistry, standard temperature is one of the conditions grouped as 'standard temperature & pressure, STP'; see reference. Standard temperature is 20C or 293K

2 Answers · Science & Mathematics · 14/09/2013

6. ### At STP which molecule will have maximum speed??? oxygen, nitrogen,both have same velocity?

the molar mass of O2 is 32 and of N2 is 28 at STP they have the same KE (temp is a measure of avg KE) so from 1...

1 Answers · Science & Mathematics · 23/09/2013

7. ### Physics problem help please. A container in the shape of a cube 11.4 cm on each edge contains air (with equiva?

...06614 moles × 28.9g/mole = 1.9114 g = .0019kg Check: Air at STP has density 1.225 kg/m³ .001481544m³×1.225kg/m³...

1 Answers · Science & Mathematics · 31/08/2013

8. ### How fast does sound travel?

1120 feet per second @ STP

6 Answers · Science & Mathematics · 03/09/2013

9. ### Challenging Density Problems?

... force = Density * g * V Density of air at STP = 1.29 g/ml = 1.29 kg/L Buoyant force = 1.29 * 9.8 * 25 = 316.05...

1 Answers · Science & Mathematics · 22/08/2013

10. ### I have no Idea difficult Physics problem?

Air is 1295 gm/m^3 @ STP Convert that to the temperature an pressure provided, then divide by 1000 (ug/m^3 / ppb)

1 Answers · Science & Mathematics · 16/08/2013