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(10 pts) What is the density of gaseous ammonia (NH3) at 39°C and 1.56 atm?

(10 pts) What is the density of gaseous ammonia (NH3) at 39°C and 1.56 atm?

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Answer #1

P = 1.56 atm

T= 39.0 oC

= (39.0+273) K

= 312 K

Molar mass of NH3 = 1*MM(N) + 3*MM(H)

= 1*14.01 + 3*1.008

= 17.034 g/mol

Lets derive the equation to be used

we have below equation to be used:

p*V=n*R*T

p*V=(mass/molar mass)*R*T

p*molar mass=(mass/V)*R*T

p*molar mass=density*R*T

Put Values:

1.56 atm *17.034 g/mol = density * 0.08206 atm.L/mol.K *312.0 K

density = 1.038 g/L

Answer: 1.038 g/L

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