Give that 41.05mL of 0.551 M NaOH are needed to react completely with 5.343 g, sand-contaminated sample of benzoic acid (C6H5OOOH, a monoprotic acid,) answer the follwing questions.
a.) How many moles of benzoic acid are in the sample?
b.) What mass ob enzoica cid is in the sample?
c.) What mass percentage of benzoic acid is in the sample?
Can someone show me steop by step how to do these?