According to the law of conservation of mass, what should the product side of this single replacement reaction look like?

Question

Zn+2HCl--->?
A. H2ZnCl2
B. H2+Zn+Cl2
C. H2+ZnCl2
D. ZnCl2
Is the answer D?

Answer 1

Zn(s) + 2HCl(aq) ---> ZnCl2(aq) + H2(g)

It is D, but don't forget to include the extra hydrogen atoms, or else the equation violates the law of conservation of mass. In this case, hydrogen gas (H2) is formed.

Answer 2

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Answer 3

it is c.

Answer 4

Thanks Victoria got a 100%

Answer 5

its c

Answer 6

1. A
2. D
3 . B
4 . C
Those are the complete answers! :)

Answer 7

@Daya Thanks!

Answer 8

Thanks Dayna!

Answer 9

A
D
B
C
Those are right. I got a 100%