Two examples of common items that use chemical change

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false

Ill give u brainliest pls how is mass of carbon conserved during cellular respiration

The primary products of complete combustion of fossil fuels are a. carbon dioxide and water b. methane and water c. carbon monoxide and water d. carbon dioxide and carbon monoxide