Please help!! List 2 advantages and disadvantages of each chart below worth 40 points!

Which statement justifies that phosphine (ph3) is a polar molecule?

Balance this equation co2(g) + h2o (g) show that the balanced equation obeys the law if conversation of mass

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.