Two chemicals A and B react completely to form C and D. If 4g of A and 6g of B react together and 3g of C are produced. What is the amount of D?
1 point
3g
-6g
7g
5g
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In general, we can write the equation as follows: A+B-----> C+ D
By law of conservation of mass, the total mass of the reactants and the products should be equal.
So, mass of A + mass of B= mass of C + mass of D.
4 + 6= 3 + x
10= 3 +x
x= 7 grams
So, 7 grams of D are produced.
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