1- the molar mass of gas 1 is the double of the molar mass of gas 2. what is the ratio of the distances travelled by these two gases?

1- the molar mass of gas 1 is the double of the molar mass of gas 2. what is the ratio of the distances travelled by these two gases?2-suppose 3 opened bottles of vinegar (CH3COOH) and pentylamine (C5H13N) were placed next to each other, which would you smell first?3- If the cotton ball containing the concentrated NH3 solution were inserted into the glass tube several seconds after the insertion of the cotton ball containing HCl, what effect would this have on the calculated value of the molecular weight of HCl?