Question

How many moles of sodium chloride are in 28 grams of NaCl?

A.) .265 mole NaCl


B.) .856 mole NaCl


C.) .479 mole of NaCl


D.) 1.2 mole NaCl

Answer 1

Option C. 0.479 mole of NaCl

Step-by-step explanation:

First, we need to find the molar mass of NaCl.

MM of NaCl = 23 + 35.5 = 58.5g/mol

Mass of NaCl = 28g

Number of mole =?

Number of mole = Mass /Molar Mass

Number of mole = 28/58.5

Number of mole = 0.479mol