A sample of calcium chloride, CaCl2, weighs 350 g. How many moles of CaCl2(s) is this?

How does a hydroelectric power plant converts energy into energy.

Based on its chemical properties, identify the position of each chemical family on the periodic table.

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