Question

calculate the number of moles in 50g of carbon dioxide CO2 relative atomic masses (C=12, O =16)

Answer 1

To calculate the number of moles in 50 grams of carbon dioxide (CO₂), we first need to determine the molar mass of CO₂.

1. **Find the molar mass of CO₂**:
- Carbon (C) has an atomic mass of 12 g/mol.
- Oxygen (O) has an atomic mass of 16 g/mol.
- CO₂ consists of 1 carbon atom and 2 oxygen atoms:
\[
\text{Molar mass of CO}_2 = (1 \times 12) + (2 \times 16) = 12 + 32 = 44 \text{ g/mol}
\]

2. **Calculate the number of moles**:
The number of moles is calculated using the formula:
\[
\text{Number of moles} = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}}
\]
In this case, we have:
\[
\text{Number of moles} = \frac{50 \text{ g}}{44 \text{ g/mol}} \approx 1.1364 \text{ moles}
\]

Therefore, the number of moles in 50 grams of carbon dioxide (CO₂) is approximately **1.14 moles**.