Question

Fill the blanks `"___"``"H"_2(g) + "O"_2(g) -> "__""H"_2"O"(l)`?

Answer 1

`2"H"_2(g) + "O"_2(g) -> 2"H"_2"O"(l)`

Explanation:

`_"H"_2(g) + "O"_2(g) -> "_H"_2"O"(l)`

Balance the oxygen atoms

`_"H"_2(g) + "O"_2(g) -> 2"H"_2"O"(l)`

Balance the hydrogen atoms

`2"H"_2(g) + "O"_2(g) -> 2"H"_2"O"(l)`