According to the law of conservation of mass, the mass of the reactants before a chemical reaction must equal the mass of the products after the reaction. Therefore, if the mass of the elements before a chemical reaction is 30 grams, the mass after the chemical reaction will also be 30 grams.
If the mass of elements before a chemical reaction is 30 grams, after the chemical reaction, the mass will be __. (1 point)
Responses
0 grams
0 grams
28 grams
28 grams
30 grams
30 grams
32 grams
1 answer
5 answers