1. Calculate How many N atoms are there in the empirical formula for this given compound when The reported analysis of this compound observed that it contained 0.301 mol of N, 0.0430 mol of H, 0.903 mol of C, and 0.602 mol of O?
2. Calculate How many grams of pure, solid sodium hydroxide are needed to make 500 mL of 0.15M NaOH solution and also express the answer in just 2 significant figures?