What is the mass of 2H2O in the equation below?





The Law of Conservation of Mass can help you determine the mass of a reactant or a product. Since you know the mass of the reactants has to equal the mass of the products, you can determine an unknown mass.
What is the mass of the reactant in the equation below?

Answer: 49.97 grams

You would add the products side, and since the mass of the products have to equal the reactants, you would know the mass of the reactants.

When You Have Completed the Question Below, Click Next
What is the mass of 2H2O in the equation below?





10.3g

6.5g

2.2g

2.7g

The mass of 2H2O in the equation cannot be determined based on the given information.