Question

calculate the weight in grams of 50 moles of NaCl

Answer 1

No. of moles=Given Mass÷Molar Mass

No. of Moles×Molar Mass=Given Mass

50 moles×58.44 g=Given Mass
2922 g=Given Mass

Or, rounding off we get
2900 g= Given Mass

Answer 2

1 mol means 58.5 g (molecular mass of NaCl)
So 50 moles means 58.5×50 =2925g