Question

How many moles of NaCl are in a 1 kg salt packet? Write the answer to one decimal place.

Answer 1

1Kg = 1000g

the molar mass of NaCl = 58.44 g/mol

number of moles = Mass / Molar mass

n = 1000g ÷ (58.44 g/mol)

n = 17.1115 mol

since you want the answer in one decimal place

then number of moles = 17.1 moles