A flask contain 44g of `CO_2` gas. Calculate how many moles of` CO_2` gas does it contain?

Options

A. 1
B. 2
C. 3
D. 4

Explanation

To calculate the number of moles of \( CO_2 \) gas in a flask containing 44 grams, follow these steps:

### Step 1: Identify the mass of \( CO_2 \)
The mass of \( CO_2 \) given in the problem is 44 grams.

### Step 2: Calculate the molar mass of \( CO_2 \)
To find the molar mass of \( CO_2 \), we need to sum the atomic masses of its constituent elements:
- Carbon (C) has an atomic mass of approximately 12 g/mol.
- Oxygen (O) has an atomic mass of approximately 16 g/mol. Since there are two oxygen atoms in \( CO_2 \), we multiply by 2.

\[ \text{Molar mass of } CO_2 = 12 \, \text{g/mol (C)} + 2 \times 16 \, \text{g/mol (O)} = 12 + 32 = 44 \, \text{g/mol} \]

### Step 3: Use the formula to calculate moles
The formula to calculate the number of moles is:

\[ \text{Number of moles} = \frac{\text{Given mass}}{\text{Molar mass}} \]

Substituting the values we have:

\[ \text{Number of moles} = \frac{44 \, \text{g}}{44 \, \text{g/mol}} = 1 \, \text{mole} \]

### Conclusion
The flask contains **1 mole** of \( CO_2 \) gas.

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