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.

Answer 1

 The  number of   moles  of salt  in  one tablespoon  is 0.109  moles

 calculation

moles  of NaCl  salt  is  calculated using moles =  mass/molar  mass  formula

mass of  NaCl  salt = 6.37 grams

molar mass  of NaCl  salt = 58.5 g /mol

moles  is therefore=  6.37  g / 58.5 g/mol  = 0.109  moles

Answer 2

There are 0.109 moles of NaCl in one tablespoon of salt. This is found by dividing the number of grams you have by the molecular weight.