Question

The molecular weight of table salt, NaCl, is 58.5 g/mol. A tablespoon of salt weighs 6.37 grams. Calculate the number of moles of salt in one tablespoon. First, complete the unit conversion using dimensional analysis:

Answer 1

A: 6.37gNaCl

B: 1 mol NaCl

C: 58.5 g NaCl

These answers are correct on e2020 I just got them right.

Answer 2

Answer:

The number of moles of salt in one tablespoon is 0.1089.

Explanation:

Molar weight of the table salt = 58.5 g/mol

Mass of the table salt in 1 table spoon = 6.37 grams.

Moles of NaCl = $\frac{6.37 g}{58.5 g/mol}=0.1089 mol$

1 table spoon = 0.1089 moles of NaCl

The number of moles of salt in one tablespoon is 0.1089.