Which substance can be decomposed by a chemical change? a. calcium

b. potassium

c. sodium

d. sodium chloride

How many moles of magnesium is 3.01 x10^22 atoms of magnesium?

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?

Light waves can move through , but they travel fastest when they move through a(n) .