density of a gas

[ems5184]

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What is the density of ammonia gas at 2.00 atm pressure and 25.0 degrees C?
(R = 0.1 L*atm/mol*K)

any help would be appreciated on this, thanks

 

[DrTacoElf]

What is the density of ammonia gas at 2.00 atm pressure and 25.0 degrees C?
(R = 0.1 L*atm/mol*K)

any help would be appreciated on this, thanks

PV = nrt
n = mass/molar mass
pv = (m/MM) RT
solve that so m/v, which is density = an expression then plug and chug.

 

[ems5184]

thanks man, i just overlooked the obvious, didnt think of substituiting that for n in the equation. thanks again.