Question

Which of the following statements is/are true about one mole of $C{H}_4\left(g\right)$ at STP.
I. There are $6.02\times {10}^{23}$ molecules present
II. The sample will occupy $22.4I$
III. The sample will weigh $16g$

• A. I
• B. II
• C. I and III
• D. II and III
• E. I, II, and III

Answer 1

The correct option is E I, II, and III

One mole of any compound contains $6.02\times {10}^{23}$ molecules.

One mole of any gas occupies $22.4L$ volume at STP.

One mole of any compound has weight equal to its gram molecular weight. For $C{H}_4$, the molecular weight is $16$ g/mol.