Question

How

many grams of Cas, are produced from 2.500 moles of CaQ?
4 HgS. +4 Cal. → 4Hg + 3CaS + CaSO4

Answer 1

Mass of CaS : 135.27 g

Further explanation

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

Reaction

4 HgS(s)+ 4 CaO(s) → 3 CaS(s) + CaSO₄(s) + 4Hg(l).

• mole of CaS

`\tt (3)/(4)* 2.5=1.875`

• mass of CaS

MW CaS : 72,143 g/mol

`\tt 1.875* 72.143=135.27~g`