Question

Which statement about a chemical reaction supports the claim that mass is conserved?

A.) The reactants and products have the same number of atoms of the same elements

B.) The reactants and products have the same number of elements

C.) The reactants and products have the same number of substances

D.) The reactants and products have the same number of molecules of the same elements

Answer 1

Answer: I believe the answer would be A.

Step-by-step explanation:

When you have a balanced equation the same number of elements are on each side. An example is 2H2 + O2 = 2H2O. Both sides have 2 oxygen and 4 hydrogen. No matter was destroyed or added.

Answer 2

1. The reactants and products have the same number of atoms of the same elements.

2. The mass of one titanium atom is equivalent to the mass of four carbon atoms

3. The atomic mass of the reactants equals the atomic mass of the product, and the product has the same number of atoms as the reactants.

4. 80 amu

5. A molecule with two atoms combined with a molecule with three atoms to produce a molecule with a mass of 84 u.

Explanation: I just took it and got it right