Question

What mass of calcium will contain the same number of atoms as are present in 3.2g of sulphur ( Atomic mass of S 32 and Ca - 40 )​

Answer 1

given mass of sulphur = 3.2g

atomic mass of sulphur = 32 g/mol

so, number of mole of sulphur = given mass of sulphur/atomic mass of sulphur

= 3.2/32 = 0.1 mol

a/c to question,

number of atoms in calcium = number of atoms in sulphur

or, number of mole in Calcium = number of mole of sulphur

or, mass of calcium/atomic mass of calcium = 0.1

or, mass of calcium/40 = 0.1

mass of calcium = 0.1 × 40 = 4g

hence, mass of calcium = 4 g