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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 wrong2 Answers · Science & Mathematics · 14/07/2010

... 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

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

... 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

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

...)/(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

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

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

...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

.../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