Answer:
57.47 grams of sodium is in the sample.
Explanation:
Given that a 100.0-g sample of sodium hydroxide contains sodium, oxygen, and hydrogen, and the sample contains 2.53 g of hydrogen and 40.0 g of oxygen, to determine what mass of sodium is in the sample the following calculation must be performed:
100 - (40 + 2.53) = X
100 - 42.53 = X
57.47 = X
Therefore, 57.47 grams of sodium is in the sample.
