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1. ### How Do I find: A sample of helium (He) occupies 44.8 L at STP. What is the mass of the sample?

Well the density of helium at stp is 0.1786g/L so just multiply density times volume to get mass. 0.1786g/l*44.8L = about 8 g the other poster has the formula right, just did the math wrong

2 Answers · Science & Mathematics · 14/07/2010

2. ### If 3.10m^3 of a gas initially at STP is placed under a pressure of 4.50atm , the temperature of the gas rises?

... and T1 are 1 atm and 0 deg C because it is at STP per the question. V1 = 3.1 m3 P2 is 4.5 atm. T2...

1 Answers · Science & Mathematics · 07/05/2013

3. ### A storage tank at STP contains 18.5 kg of nitrogen (a) What is the volume of the tank?

18,500 x 1.25 = 23,125 litres. 18,500 + 15,000 = 33,500g x 1.25 = 41,875litres. 41,875/23,125 = 1.81:1. Air at STP = 101325Pa, so 101325 x 1.81 = 183,398.25Pa, or 183.39825 kPa..

3 Answers · Science & Mathematics · 14/12/2010

4. ### An Unidentified gas has a density of 1.429 g/L at STP (What is the unknown gas likely to be?)?

... Unidentified gas has a density of 1.429 g/L at STP (What is the unknown gas likely to be?)? At STP, the volume...

1 Answers · Science & Mathematics · 10/11/2012

5. ### How many liters does 24.0 grams of O2 occupy at STP?

Oxygen density at stp = 1.429kg/m^3, or 0.001429g/cc. (24/0.001429) = 16,794.96151cc., or 16.795 litres.

1 Answers · Science & Mathematics · 11/02/2013

6. ### If 2.00 m3 of a gas initially at STP is placed under a pressure of 4.00 atm, the temperature of the gas rises?

...)/(T1) = (P2)(V2)/(T2)? Plug and chug. STP... so we have 273 K and 1 atm. P1 = 1 atm V1 = 2.00 m^3...

6 Answers · Science & Mathematics · 24/07/2009

7. ### 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

8. ### ideal diatomic gas at STP is adiabatically compressed to 48% of its original volume. Find its final pressure?

P2 = P1 * ((V1 / V2) ^ gamma) = 279423 Pa T2 = T1 * ((V1 / V2) ^ (gamma - 1)) = 366.357 K (STP = 273.15 K, 100000 Pa; gamma = 1.4) See the ref.

1 Answers · Science & Mathematics · 25/03/2008

9. ### An ideal gas has a density of 3.18 kg/m3 at STP (standard temperature and pressure). What is the volume of 0.8?

...39;s constant T> gas's temperature . since you need to find the volume at STP then p=M/V V> gas's volume M> gas's mass...

1 Answers · Science & Mathematics · 24/01/2011

10. ### (a) What is the average translational kinetic energy of a nitrogen molecule at STP? 1 J (b) What is the total?

.../2 k = Boltzmann constant T = absolute temperature (273K @ STP) (a) 3*(1.38e-23 J/K)(273 K)/2 = 5.65e-21 J (b...

3 Answers · Science & Mathematics · 23/06/2009