Asked by Tsukasa Yugi

According to the law of conservation of mass, what should the product side of this single replacement reaction look like?
Zn+2HCI------>

A. H2 ZnCl2
B. H2 + Zn + Cl2
C. H2 + ZnCl2
D. ZnCl2

Could anyone explain it to me???
Thank you
Answered by not dependent on mass
Zn -> Zn++, replaces 2H+ in HCl, 2H+ ->H2
so
H2 + Zn Cl2
Answered by DrBob222
A is correct.
Zn + 2HCl ==> ZnCl2 + H2. The mass balances. On the left you have
65.4 +2*H + 2*35.5 = 138.4. On the right you have
65.4 + 2*35.5 + 2*1 = 138.4
Answered by Tsukasa Yugi
Okay thank you!!!
Answered by Correct answer
Can someone please post all the answers for Specific Mass Conversions Quick Check
How does stoichiometry support the law of conservation of mass?(1 point)

Also, for "Mass and Atoms Quick Check"

Which statement describes the quantities that can be found using the number of moles?

Another one is Modeling Fission Quick Check
Which fact is true during a fission chain reaction?(1 point)

And "Alpha Particle Emission Quick Check"


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