Question

A student is performing a chemical reaction. The mass of Reactant 1 is 33 grams. The mass of Reactant 2 is 57 grams. The reaction produces a solid and a gas. The mass of the solid is 26 grams. What is the mass of the gas?(1 point)
Responses

90 grams
90 grams

116 grams
116 grams

64 grams
64 grams

26 grams
26 grams

1 answer

To find the mass of the gas produced in the reaction, we can use the law of conservation of mass, which states that the mass of the reactants must equal the mass of the products.

  1. Calculate the total mass of the reactants:

    • Mass of Reactant 1 = 33 grams
    • Mass of Reactant 2 = 57 grams
    • Total mass of the reactants = 33 g + 57 g = 90 grams
  2. The mass of the products consists of the mass of the solid produced and the mass of the gas produced. We know the mass of the solid:

    • Mass of the solid = 26 grams
  3. Using the law of conservation of mass: Total mass of reactants = Mass of solid + Mass of gas 90 grams = 26 grams + Mass of gas

  4. Rearranging the equation to find the mass of the gas: Mass of gas = 90 grams - 26 grams = 64 grams

Therefore, the mass of the gas produced is 64 grams.