What group of two or more atoms acting as one ion with one charge?

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

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false

What is the molar mass of the anhydrous compound? answer using four significant figures. 36.02 g/mol 120.15 g/mol 156.12 g/mol