2ZnS plus 2O2 yields 2ZnO plus SO2 what is number in each category and is it balanced or unbalanced

2 ZnS + 3O2 ---> 2ZnO + 2 SO2

Explanation:

2 ZnS + 2O2 ---> 2ZnO + SO2

There are 2 Zn atom on the LHS and 2 Zn on the RHS. Hence the Zn is balanced on both sides of the equation.

There are two S atom on the LHS but there is only one S atom on the RHS.

Hence we will balance the S atoms

2 ZnS + 2O2 ---> 2ZnO + 2 SO2

Now the oxygen is unbalanced as there are three oxygen molecule on the RHS but only two on the LHS.

Hence, the balanced equation would be

2 ZnS + 3O2 ---> 2ZnO + 2 SO2

if you already have the answer to (a), then just work out how many periods there are in 1 minute, and that's the answer to (c).

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