Question

Which of the following has largest moles? (Atomic mass of Na- 23u, S- 32u, C- 12u, O- 16u, H- 1u)
A) 18g of water
B) 16g of sulphur-dioxide
C) 2.3g of sodium
D) 2.2 g of carbon dioxide

Answer 1

Answer:

The pressure in a vessel that contained pure oxygen dropped from 2000 mm to 1500 mm in 47 minutes as the oxygen leaked through a small hole into vacuum. When the same vessel was filled with another gas, the pressure dropped from 2000 mm to 1500 mm in 74 minutes.What is the molecular weight of the gas?

Study later

View solution

0.3 g of chloroplatinate of an organic diacidic base left 0.09 g of platinum on ignition. The molecular weight (in g/mol) of the organic base is

Answer 2

Answer:

Answer:

The pressure in a vessel that contained pure oxygen dropped from 2000 mm to 1500 mm in 47 minutes as the oxygen leaked through a small hole into vacuum. When the same vessel was filled with another gas, the pressure dropped from 2000 mm to 1500 mm in 74 minutes.What is the molecular weight of the gas?

Study later

View solution

0.3 g of chloroplatinate of an organic diacidic base left 0.09 g of platinum on ignition. The molecular weight (in g/mol) of the organic base is