Question

The law of conservation of matter tells us that the total number of atoms does not change in a chemical reaction and thus mass is conserved. Select ALL of the reactions that obey the law of conservation of matter.
Responses
A 4 NH3 + 5 O2 → 4 NO + 6 H2O4 NH 3 + 5 O 2 → 4 NO + 6 H 2 O
B 8 H2S + 8 Cl2 → S8 + 16 HCl8 H 2 S + 8 Cl 2 → S 8 + 16 HCl
C CH4 + 2 O2 → CO2 + H2OCH 4 + 2 O 2 → CO 2 + H 2 O
D HCl + K2CO3 → KCl + H2O + CO2HCl + K 2 CO 3 → KCl + H 2 O + CO 2
E 2 Al(OH)3 + 3 H2SO4 → Al2(SO4)3 + 6 H2O

Answer 1

A, B, C, and D all obey the law of conservation of matter.