A student combines 55.490g of CaCl2 in solution with 52.995g of Na2CO3 in solution. If the student recovers 50.045g of CaCO3 what mass of NaCl must be in solution? ...Please answer the chemical equation and solve for the unknown mass.

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.