The mass of the elements before a chemical reaction will remain the same after the reaction, according to the law of conservation of mass. Therefore, the answer is:
30 grams
If the mass of elements before a chemical reaction is 30 grams, after the chemical reaction, the mass will be __blank. (1 point)
Responses
32 grams
32 grams
28 grams
28 grams
30 grams
30 grams
0 grams
1 answer