Question 1. An impure sample of benzoic acid (C6H5COOH, 122.12 g/mol) is titrated with 0.8067 M NaOH. A 5.109 g sample requires 36.97 ml of titrant NaOH solution to reach the endpoint. What is the percent by mass of benzoic acid in the sample?
Question 2. Indicate the possible identity/identities of the unknown element X for each of the following by choosing the correct choices.
A) XBr3