Q.:- Hydrogen and oxygen combine in the ratio of 1 : 8 by mass to form water. What mass of oxygen gas would be required to react completely with 3 g of hydrogen gas?
We know that, 1 g of hydrogen reacts with oxygen = 8 g
Therefore, 3 g of hydrogen reacts with oxygen = 8 x 3 = 24 g
Thus, 24 g of oxygen gas would be required to react completely with 3 g of hydrogen gas.
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