he mass of a sulphur atom is double that of an oxygen atom. Can we decide on this basis that the density of sulphur vapour relative to oxygen is two?

Explanation

To determine whether the density of sulfur vapor relative to oxygen can be concluded to be 2 based solely on the fact that the mass of a sulfur atom is double that of an oxygen atom, we need to consider the relationship between molecular weight and density.

### Step-by-Step Solution:

1. **Understanding Atomic Mass**:
- The problem states that the mass of a sulfur atom is double that of an oxygen atom.
- Let's denote the atomic mass of oxygen as \( M_O \) and that of sulfur as \( M_S \). Therefore, we have:
\[
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