Question

Calcule a massa molecular das seguintes substâncias Mg (OH)2

Answer 1

Mg (OH) 2 = H2MgO2

Ar (Mg) = 24,3 × 1 = 24,3
Ar (O) = 16 × 2 = 32
Ar (H) = 1 × 2 = 2

Mr ( Mg (OH) 2 ) = 24,3 + 32 + 2 = 58,3
Mr ( Mg (OH) 2 ) = 58,3 g/mol