A 2.005 sample of xCuSO4 yH2O was heated to drive off water from the hydrated salt. The anhydrous salt weighed 1.283 grams. a. What is the mass of water lost.
b. How many moles of water were lost.
c. How many moles of anhydrous salt remain.
d. What is the empirical formula for the hydrate (Ration x:y).

The table lists the lattice energies of some compounds.compoundlattice energy (kj/mol)lif            –1,036licl            –853naf            –923kf            –821nacl            –786which statement about crystal lattice energy is  best  supported by the information in the table? the lattice energy increases as cations get smaller, as shown by lif and kf.the lattice energy increases as the cations get larger, as shown by lif and licl.the lattice energy decreases as cations get smaller, as shown by nacl and naf.the lattice energy decreases as the cations get smaller, as shown by naf and kf.