In a 10-litre container is a mixture of helium and argon at a temperature of 273 K and a total pressure of 1 bar. The initial partial pressure ratio, defined as: 
is equal to 1.2. The initial mass of the mixture is 10 g. Then, 2 g of hydrogen gas 
is added to the mixture.
What is the ratio 
of the partial pressures of helium and argon after the addition of hydrogen?
What is the ratio 
of the partial pressures of helium and hydrogen? Write the result to 3 decimal places.
Gas constant:
The kilomolar masses of the mentioned elements:
