Question

Calculate the number of moles in 58.44 g of Sodium Chloride?

Answer 1

To calculate the number of moles of a substance, you can use the formula:

\[
\text{Number of moles} = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}}
\]

For Sodium Chloride (NaCl), the molar mass can be calculated as follows:

- Sodium (Na) has an atomic mass of approximately 22.99 g/mol.
- Chlorine (Cl) has an atomic mass of approximately 35.45 g/mol.

Thus, the molar mass of NaCl is:

\[
\text{Molar mass of NaCl} = 22.99 \, \text{g/mol} + 35.45 \, \text{g/mol} \approx 58.44 \, \text{g/mol}
\]

Now, using the mass of sodium chloride given (58.44 g):

\[
\text{Number of moles} = \frac{58.44 \, \text{g}}{58.44 \, \text{g/mol}} = 1 \, \text{mol}
\]

Therefore, there is 1 mole of Sodium Chloride in 58.44 g.