Question

given 146 g of nacl, determine the number of moles of nacl. 1 mol nacl = 58.44 g nacl ? mol nacl = 146 g nacl round your answer to two decimal places.

Explanation:

Step1: Set up mole - mass ratio

We know that the molar mass of NaCl is 58.44 g/mol. Let $n$ be the number of moles of NaCl. The ratio is $\frac{n}{146}=\frac{1}{58.44}$.

Step2: Solve for the number of moles

Cross - multiply to get $n=\frac{146}{58.44}$.
$n=\frac{146}{58.44}\approx2.50$

Answer:

2.50