Question

Hey mate please answer all​

Answer 1

2-Oxyhen is prepared by the taking constant ratio of hydrogen peroxide and magnesium dioxide.
3-It reacts by taking the bonds of oxygen and methane then their both atoms regenerates and reacts
4-By taking :

calcium carbonate +hydrochloric acid----------> calcium chloride + water +carbon dioxide

Then the CO2 is collected by the water and calcium chloride by separating