Classwork 14A – Day 2 Purpose: To practice law of conservation of mass and mole ratio

For each chemical reaction below show that the law of conservation of mass is observed

3 BaF2 + 2 K3PO4 → 1 Ba3(PO4)2 + 6 KF
1 H2SO4 + 1 Mg(NO3)2 → 1 MgSO4 + 2 HNO3
1 WO3 + 3 H2 → W + 3 H2O
3 O2 + CS2 → CO2 + 2 SO2
ZnO + 2 HCl → ZnCl2 + H2O

What are ALL the possible mole ratios of the following equations – balance first then answer

2 H2O2 → 2 H2O + 1 O2
2 Na + 1 MgF2 → 2 NaF + 1 Mg
1 Cl2 + 2 KI → 2 KCl + 1 I2
2 Na + 2 HCl → 1 H2 + 2 NaCl
2 K + Cl2 → 2 KCl