Question

50 PCTE+ CORONIȚA VA IMPLOR♡
Clasa 8

Answer 1

2.

a) H2SO4 / ZnSO4 / FeSO4 / Fe2(SO4)3

b) CH4 / CO2 / NH3 / PH3

c) HCl / HBr / HI / H2S

d) H3PO4 / Na3PO4 / Ca3(PO4)2

3.

H2SO4 = 2x1+32+16x4 = 98 g/mol

HCl = 1x1+1x35,5 = 36,5 g/mol

HBr = 1x1+1x80 = 81 g/mol

HI = 1x1+1x127 = 128 g/mol

H2S = 2x1+1x32 = 34 g/mol

H3PO4 = 3x1+1x31+4x16 = 98 g/mol