Chem exam 1
When a copper ingot completely burns in a fire in a kiln, the mass of the product is much higher than the mass of the ingot. What happens to the matter that composed the ingot?
The matter that composed the ingot reacts to form copper(II) oxide that composes of copper and oxygen.
An automobile gasoline tank holds 23 kg of gasoline. When the gasoline burns, 83 kg of oxygen is consumed, and carbon dioxide and water are produced.
23kg + 83kg= 106kg (H20 and CO2= 106kg)