Two flasks A and B have equal volume. Flask A contains hydrogen at 300 K while flask B has an equal mass of `CH_(4)` at 600 K.
which flask contains larger number of molecules?
b. In which flask is the pressure greater and by how many times?

Explanation

To solve the problem step by step, we will address both parts of the question:

### Part a: Which flask contains a larger number of molecules?

1. **Identify the substances and their molecular weights**:
- Flask A contains hydrogen (H₂) with a molecular weight of 2 g/mol (since H has an atomic weight of approximately 1 g/mol).
- Flask B contains methane (CH₄) with a molecular weight of 16 g/mol (C = 12 g/mol + 4 × H = 4 g/mol).

...