A gaseous hydrocarbon `X`, was burnt in excess of oygen. A `0.112 dm^(2)` sample of `X`, at `STP` gave `0.88 g` of `CO_(2)`. How many C-atoms are there in one molecule of `X`?
a. 1 b. 2 c. 3 d. 4

Explanation

To solve the problem, we need to determine the number of carbon atoms in one molecule of the gaseous hydrocarbon \(X\) based on the information provided.

### Step-by-Step Solution:

1. **Calculate the moles of hydrocarbon \(X\):**
- At STP (Standard Temperature and Pressure), 1 mole of any gas occupies 22.4 liters (or 22,400 cm³ or 22.4 dm³).
- Given the volume of the hydrocarbon \(X\) is \(0.112 \, \text{dm}^3\), we can calculate the moles of \(X\) using the formula:
\[
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