The balanced chemical equation for the reaction of hydrogen and oxygen is shown below. 2H2 + O2 Right arrow. 2H2O The number of moles of hydrogen that is needed to produce 0.253 mol of water is

The number of moles of hydrogen that is needed to produce 0.253 mol of water is 0.253.

Explanation:

The balanced reaction is:

2 H₂ + O₂ → 2 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of each compound participate in the reaction:

Then you can apply the following rule of three: if by stoichiometry 2 moles of water are produced from 2 moles of hydrogen, 0.253 moles of water are produced from how many moles of hydrogen?

amount of moles of hydrogen= 0.253 moles

The number of moles of hydrogen that is needed to produce 0.253 mol of water is 0.253.

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.