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A flask contains a gas mixture of hydrogen, nitrogen and methane. The total
pressure of the mix is 3.0 atm. The partial pressure of the hydrogen is 0.5
atm, and the partial pressure of the methane is 1.5 atm. What is the partial
pressure of the nitrogen?
OA) 0.8 atm
OB) 1.0 atm
OC) 1.6 atm
OD) 2.0 atm

Answer 1

1 Atm

Step-by-step explanation:

Dalton's law

The total pressure is 3 Atm so all you have to do is subtract the other partial pressures from 3

Answer 2

OB) 1.0 atm

Step-by-step explanation:

we have a mixture of hydrogen, nitrogen and methane and we have the following data

`P_t= 3.0 atm`

`P_H=0.5atm\\P_(CH_4)=1.5 atm\\P_N=?`

According to the law of Dalton the sum of the partial pressures of each gas is equal to the total pressure

Total pressure equation

`P_t=P_H+P_(CH_4)+P_N`

now we clear the partial pressure of nitrogen from the equation

`P_t=P_H+P_(CH_4)+P_N\\P_t-P_H-P_(CH_4)=P_N\\3amt-0.5atm-1.5atm=P_N\\1atm=P_N`

the partial pressure of nitrogen is 1 atm

the correct answer is OB) 1.0 atm