3.x Conservation Of Mass (GCSE Chemistry)

The following is a GCSE Chemistry test covering '3.x Conservation Of Mass'

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In a reaction 20g of reactants produce 20g of products. This demonstrates:

If 2.8g of iron reacts completely with 1.6g of sulfur, how much iron sulfide is produced?

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

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

If 28g nitrogen gas completely react with 6g hydrogen gas to form ammonia, what is the mass of ammonia produced?

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

Iron combines completely with 32g of sulfur forming iron sulfide. If 56g of iron are used, what is the total mass of iron sulfide formed?

When 12g of carbon reacts with 32g of oxygen to produce carbon dioxide, what is the mass of carbon dioxide produced?

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

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

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