Which is an example of a pure substance? A. coffee B. helium C. vinegar D. trail mix
1 answer:
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Answer:
Explanation:
The Law of Conservation of Mass states that mass cannot be created or destroyed.
In terms of a chemical reaction, the mass of the reactants has to equal the mass of the products.
The reactants are A and B. The mass of A is 19 grams and the mass of B is 24 grams. Add the masses.
- 19 g + 24 g= 43 g
This is the mass of the reactants.
The products and C and D. The mass of C is 15 grams. The mass of the products has to equal the mass of the reactants, which is 43 grams. Subtract 15 from 43 to find D's mass.
- 43 g - 15 g= 28 g
<u>28 grams</u> of D will be produced.