Question

calcule el numero de moles cada sustancia de los siguientes casos
a)60g de zn b)20g de ph3 c)40g de fe d)30g de h2O2

Answer 1

1. aplcar la fórmula n (mol) = masa/Mm

a) Mm Zn = 65.38 g/mol

mol = 60g/ 65.38 g/mol

mol = 0.917

b) Mm PH3 = 34 g/mol

mol = 20 g / 34 g/mol

mol = 0.588

c) Mm Fe = 55.84 g/mol

mol = 40 g / 55.84 g/mol

mol = 0.716

d) Mm H2O2 = 34 g/mol

mol = 30 g / 34 g/mol

mol = 0.882