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If 10 g of a substance reacts completely with 20 g of another substance, what is

Practice Questions

Q1
If 10 g of a substance reacts completely with 20 g of another substance, what is the total mass of the products formed? (2020)
  1. 30 g
  2. 20 g
  3. 10 g
  4. 40 g

Questions & Step-by-Step Solutions

If 10 g of a substance reacts completely with 20 g of another substance, what is the total mass of the products formed? (2020)
  • Step 1: Identify the mass of the first substance, which is 10 g.
  • Step 2: Identify the mass of the second substance, which is 20 g.
  • Step 3: Add the mass of the first substance to the mass of the second substance: 10 g + 20 g.
  • Step 4: Calculate the total mass: 10 g + 20 g = 30 g.
  • Step 5: State that according to the law of conservation of mass, the total mass of the products is equal to the total mass of the reactants.
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