17 moles of oxygen is equals to how many grams

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

Which describes fat? a: a carbohydrate that produces energy b: a nucleic acid that directs cell function c: a lipid that stores energy d: a protein that speeds up a chemical reaction

Sulfuric acid is a polyprotic acid. write balanced chemical equations for the sequence of reactions that sulfuric acid can undergo when it's dissolved in water.