Respostas

2014-05-06T21:46:41-03:00
A) NaBr: 23g + 80g = 203g
b)CaSO4: 40 + 32 + 4x16 = 136g
c)Ca3(PO4)2: 3x40 + 2x31 + 8x16= 341g
d)CuSo4 H2O: 63,5 + 31 + 64 + 2 + 16= 176,5g