Find the number of moles and the number of representative particles for each problem. 18) 5.00 g of H2

19) 187 g of Al

20) 0.000264 g of Li2HPO4

21) 333 g SnF2

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)

they all get energy from eating other animals, dead animals to be more precise.

hienas tends to steal pray from other animals. crows and vultures tend to eat dead animals and leftovers.

hope it ,

bioteacher101