Answer the following question:
According to the law of conservation of mass, the total mass of reactants is always equal to the total mass of products in a chemical reaction carried out in a closed system.
1. If a chemical reaction is performed in an open container, the measured mass of products may appear less than reactants because
2.In a chemical reaction \(220\ g\) baking soda mixture containing sodium bicarbonate and vinegar on heating gives \(87\ g\) of carbon dioxide gas. What mass of solid residue will left in food?