does anyone have the answers for Calculating mass quick check?

1. Which option correctly describes the reactants and products of a chemical reaction?

A. The mass of the reactants can be more or less than the mass of the products. The total number of moles of the reactants must be equal to the total number of moles of the products.

B. The mass of the reactants can be more or less than the mass of the products. The total number of moles of the reactants can also be more or less than the total number of moles of the products.

C. The mass of the reactants must be equal to the mass of the products. The total number of moles of the reactants must also be equal to the total number of moles of the products.

D. The mass of the reactants must be equal to the mass of the products. The total number of moles of the reactants can be more or less than the total number of moles of the products.

10 answers

1. The mass of the reactants must be equal to the mass of the products. The total number of moles of the reactants can be more or less than the total number of moles of the products.

2. Divide the mass of the reactant by its molar mass to find the number of moles of the reactant. Use the chemical equation to find the number of moles of the product. Multiply the number of moles of the product by its molar mass to find the mass of the product.

3. 2(108 g/mol)+32 g/mol=248 g/mol; (248 g/mol)(0.02 mol)=4.96 g

4. 19.5 g

5. 853.5 g

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