Question

What is the mass of 0.257 mol of calcium nitrate?

Answer 1

Answer: 42.14 g

Explanation: calcium nitrate -
`Ca(NO_(3) )_(2)`

, the molar mass of calcium nitrate = 164 g

formula used =
`given mass/molar mass`= no of moles

mass required =
`0.257*164`

=
`42.14` g