How do you convert grams and mols to atoms? for example: if you have 22 grams of pb(no3)2 how many atoms do you have?

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

Identify the lewis base in this balanced equation: fe3+ h2o fe(h2o)63+