Achemist determined by measurements that moles of calcium sulfide participate in a chemical reaction. calculate the mass of calcium sulfide that participates.

corrected question:

A chemist determined by measurements that 0.03 moles of calcium sulfide participate in a chemical reaction. Calculate the mass of calcium sulfide that participates

Explanation:

number of moles of CaS

molar mass of CaS = 40+32 = 72g/mol

number  of moles = mass/ molar mass

mass = number of moles * molar mass

mass = 0.03 *72

mass of calcium sulfide = 2.16g

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante