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_Au2S3 + _H2---> _Au + _H2S

Question 3 options:

A- 1, 3, 2, 3


B- 1, 2, 4, 2


C- 1,3,1,2


D- 2, 1, 1, 3

Sagot :

The answer is A because if you place the first two numbers 1 and 3
Au=2
S=3
H=6
It has to equal to the product so then you put in the last two numbers 2 and 3
Au=2
S=3
H=6
It should be C because I worked this out for a while