Question

When magnesium is burnt in air, there is an increase in mass after the reaction. Why?

Answer 1

Answer:

the mass of magnesium oxide is more than the mass of the magnesium this is because the mass of oxygen use Din can not considered if that is considered the total mass of the reactant and the product is found to be almost equal

Answer 2

When magnesium is burned in the presence of air, the mass of the metal increases.

• When magnesium ribbon is burned in the air, magnesium oxide forms a white solid.
• Magnesium oxide has a mass that is greater than magnesium.
• This is because the amount of oxygen consumed is not calculated.