Answer: The mass of NaOH for given number of moles is 31.4 grams.
Explanation:
To calculate the mass for given number of moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex]
We are given:
Molar mass of NaOH = 40 g/mol
Moles of NaOH = 0.785 moles
Putting values in above equation, we get:
[tex]0.785mol=\frac{\text{Mass of NaOH}}{40g/mol}\\\\\text{Mass of NaOH}=(0.785mol\times 40g/mol)=31.4g[/tex]
Hence, the mass of NaOH for given number of moles is 31.4 grams.
