Choose the best answer to fill in the blanks of the passage….
Choose the best answer to fill in the blanks of the passage. Some answers may be used more than once, some may not be used. 1)__________________________ allows the determination of a quantity of a product or reactant in a chemical reaction equation on the basis of a given quantity of a different product or reactant. In such a calculation, a mass can be converted to a(n) 2)_________________ by division by the molecular weight of the compound, then the ratio to a different compound involved in the reaction determined using the coefficients of the reaction equation. However, in some cases one reagent may be a(n) 3)________________, such that there will not be enough of this material for the other reagents to completely react. In such a case, the other reagents will be 4)______________________, and there will be some left over once the reaction is complete.