How many oxygen atoms are in 7.20 moles of h2so4?

As you move from right to left on the periodic table the atomic radius fill in the blank

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.

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?