Question

Tolong dibantu, no. 10

Answer 1

NCaCl2,nNaCO3,nCaCO3 = 0,6 × 100 = 60 mmol = 0,06 mol

m = n × MrCaCO3
= 0,06 × 100
= 6 gram

Answer 2

1. Bikin reaksinya dulu
n CaCl2= 0.6 x 100 = 60 mmol
n Na2CO3= 0.6 x 100 = 60 mmol
n CaCO3= 60 mmol = 0.06 mol

Massa CaCO3= n x Mr = 0.06 x 100 = 6 gr

Cat: koefiesin pada senyawa itu huruf kecil yaaa, ngerti kan?:/