8. According to the law of conservation of mass, the total mass of the reactants is a. sometimes more or sometimes less than the total mass of the products. b. always more than the total mass of the products. c. always equal to the total mass of the products. d. always less than the total mass of the products. C_(3)H_(8)+5O_(2)(aq)arrow 3CO_(2)(aq)+4H_(2)O(s) __ 50.0g 41.29 22.5g

The correct answer is c. always equal to the total mass of the products.<br /><br />According to the law of conservation of mass, the total mass of the reactants in a chemical reaction is always equal to the total mass of the products. This is because matter cannot be created or destroyed during a chemical reaction, only rearranged.<br /><br />In the given chemical equation, the total mass of the reactants is the sum of the masses of C3H8 and 5O2, which is 50.09g + 41.29g = 91.38g. The total mass of the products is the sum of the masses of 3CO2 and 4H2O, which is 22.5g. Therefore, the total mass of the reactants is equal to the total mass of the products, which is 91.38g.