Question

A pre weighed vessel was filled with oxygen at ntp and weighed

Answer 1

Explanation:

at the same temperature and pressure, and again weighted. The weight of oxygen will be [ NCERT 1989]. A) The same as that of

Answer 2

Answer:

The correct option is Option B i.e. the molecular weight of oxygen is half that of Sulphur dioxide.  

Explanation:

Oxygen molecule is formed of two atom of oxygen. "Atomic weight of oxygen is 16".

So, Molecular weight of oxygen $=16 \times 2=32$

Sulphur dioxide is formed of one atom of Sulphur and two atom of oxygen. Molecular weight of sulphur is 32.

Molecular weight of Sulphur dioxide $=32 + 16 \times 2=32+32=64$

So, the molecular weight of oxygen / molecular weight of Sulphur dioxide  

$=\frac{32}{64}=\frac{1}{2}$

So, weight of oxygen is half that of "molecular weight of Sulphur dioxide".