3.x Conservation Of Mass (GCSE Chemistry)

If hydrogen (4g) reacts with oxygen (32g), how much water is produced?

When a substance burns in 23g of oxygen, producing an oxide, how many grams of product result if the substance weighed 50g before burning?

Lead nitrate decomposes completely into lead oxide, nitrogen dioxide and oxygen. If the mass of lead nitrate is 33.1g, what will be the combined mass of the products?

If calcium carbonate weighing 100g decomposes to produce calcium oxide and carbon dioxide, what is the combined mass of the two products?

If 5g of hydrogen reacts completely with 40g of chlorine, what mass of hydrogen chloride is formed?

Magnesium reacts with chlorine to produce magnesium chloride. If 48g of magnesium reacts completely with 142g of chlorine, what will be the total mass of magnesium chloride produced?

In an experiment, 11.25g of sodium reacts completely with 17.25g of chlorine. What is the mass of sodium chloride produced?

What principle states that the total mass before a reaction equals the total mass afterward?

A reaction had 55g total reactants. How much do products total?

During a lab experiment, 50g of reactants are used. What mass of products should form according to the law of conservation of mass?

Lithium (7g) reacts with water (18g). How much lithium hydroxide and hydrogen gas are produced in total?