15. an apparatus consists of a 4.0 dm3
flask containing nitrogen gas at 25 oc and 803 kpa. it is joined
by a valve to a 10.0 dm3
flask containing argon gas 25 oc and 47.2 kpa. the valve is opened and
the gases mix.
i. what is the partial pressure of each gas after mixing?
ii. what is the total pressure of the gas mixture

Partial pressure : P N₂ = 2.251 atm; P Ar = 0.3336 atm

Total Pressure = 2.585 atm

Some of the laws regarding gas, can apply to ideal gas (volume expansion does not occur when the gas is heated), among others  

So that the three laws can be combined into a single gas equation, the ideal gas equation  

In general, the gas equation can be written  

where  

P = pressure, atm  

V = volume, liter  

n = number of moles  

R = gas constant = 0.08205 l.atm / mol K  

T = temperature, Kelvin

1. mol N₂

P = 803 kPa = 7.925 atm

V = 4 L

T = 25 C = 298 K

2. mol Ar

P = 47.2 kPa = 0.466 atm

V = 10 L

Then :

V total = 14 L

1. P N₂

2. P Ar

P total = P N₂ + P Ar

P total = 2.251 + 0.3336

P total = 2.585 atm

Which equation agrees with the ideal gas law  

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Which law relates to the ideal gas law  

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sure what is it? ^w^