Question

massa molecular da substâncias de BaSo4

Answer 1

Ba = 137,33S = 32,07O= 16 * 4 = 64
137,33 + 32,07 + 64 = 233,4 g/mol

Answer 2

BaSO4

Ba-->1.137,33=137,33
S-->1.32,07=32,07
O-->4.16=64

Massa molecular:137,33+32,07+64=233,4g/mol

Espero ter ajudado!