Question

Find the average mole ratio and average deviation of mole ratios of the best two trials.

I did a hydrate lab where I found the mass of hydrate (Trial 1: 0.257 g CuSO4*XH2O, Trial 2: 0.299 g CuSO4*XH2O), mass of anhydrous salt (Trial 1:0.170 g CuSO4, Trial 2: 0.199 g CuSO4), mass of water lost (T1: 0.087 g XH2O, T2: 0.104 g XH2O), moles of water (T1: 0.004829 moles H2O, T2: 0.00577 moles H2O) and anhydrous salt (Trial 1: 0.001065 mol CuSO4, Trial 2: 0.00125 mol CuSO4) and mole ratio (Trial 1: 4.5, Trial 2: 4.616).