Calculate the lattice energy of rubidium iodide (RbI)? can someone help me to how to solved this problem please.

Agas can holds 2.0 gal of gasoline. what is this quantity in cubic centimeters?

1. list three scientific reasons cockroaches may fly.

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.