Answer :
The molar mass of [tex]CuSO_{4} .5H_{2}O[/tex] is 249.68 g / mol .
Molar mass of [tex]CuSO_{4} .5H_{2}O[/tex] is calculated as follows ,
Make use of the chemical formula to determine the number of atoms of each element in the compound.
Multiply the atomic weight of each element with its number of atoms present in the compound.
Add up all and assign unit as grams/mole.
Example : molar mass of [tex]CuSO_{4} .5H_{2}O[/tex] = atomic weight of Cu + atomic weight of S + 4 × atomic weight of O +5( 2 × atomic weight of H + atomic weight of O )
molar mass of [tex]CuSO_{4} .5H_{2}O[/tex] = 63.546 + 32 + 4 × 16 + 5( 2 × 2 + 16 ) = 249.68 g / mol
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