A. The total mass of all of the reactants prior to a chemical reaction must equal the total mass of all the products after the reaction.
C. 28 grams
B. 149 g
C. 2 grams
Q; What does the ;aw of Conservation of Mass state?
A. The total mass of all of the reactants prior to a chemical reaction must equal the total mass of all the products after the reaction.
B. Matter is neither created or destroyed in a chemical reaction, only rearranged.
C. Matter cannot be rearranged during a chemical reaction.
D. The total mass of reactants prior to a chemical reaction is greater than the mass of the product due to the release of energy.
Q; If the mass of elements before a chemical reaction is 30 grams, after the chemical reaction, the mass will be __.
A. 32 grams
B. 0 grams
C. 28 grams
D. 30 grams
Q; 78 g of potassium(K) react with 71 g of chlorine (CI) to produce potassium chloride. According to the Law of Conservation of Mass, what is the mass of the product (2KCI)
A. 4 g
B. 149 g
C. 2 g
D. 156 g
Q; 2 grams of potassium (K) reacts with 5 grams of Oxygen (O). According to the Law of conservation of Mass, how many grams of potassium oxide (K2O) will be produced?
A. 10 grams
B. 7 grams
C. 2 grams
D. 5 grams
1 answer