How many moles of water are produced from the combustion of 3.5 mol of hydrogen and 5.2 mol of oxygen?

See response above.

To find out the number of moles of water produced from the combustion of hydrogen and oxygen, we need to know the balanced chemical equation for the combustion reaction.

The balanced chemical equation for the combustion of hydrogen gas (H2) with oxygen gas (O2) to produce water (H2O) is:

2 H2 + O2 → 2 H2O

From the balanced equation, we can see that 2 moles of hydrogen are required to produce 2 moles of water. This means that the molar ratio of the reactant (hydrogen) to the product (water) is 2:2, which simplifies to 1:1.

Since the molar ratio is 1:1, it means that for every mole of hydrogen that reacts, one mole of water is produced. Therefore, in this combustion reaction, 3.5 mol of hydrogen will produce 3.5 mol of water.

Hence, 3.5 moles of water are produced from the combustion of 3.5 mol of hydrogen and 5.2 mol of oxygen.