If 57 ml of 0.58 m ammonium phosphate and 51 ml of 0.84m calcium acetate are mixed:

a. predict the products to write the balanced chemical equation. be sure to include phase labels. identify the precipitate.

b. write the complete ionic and net ionic reactions. be sure to include ion charges where appropriate!

c. use the amounts of reagents provided to determine the theoretical yield of the precipitate.

d. if 3.941 g of precipitate is actually collected, what is the percent yield?

Iknow the answer is a but i don't know why

What are the similarities of physical and chemical change ?

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.