Question

Two molecules of hydrogen react with one molecule of oxygen to produce two

molecules of water. How many molecules of water are produced from 2.0 3 1023
molecules of oxygen? How many moles of water are produced from 22.5 moles
of oxygen?

Answer 1

From 2.0 × 10²³ molecules of oxygen, 4.0 × 10²³ molecules of water will be produced. From 22.5 moles of oxygen, 45.0 moles of water will be produced, following the 1:2 stoichiometric ratio of oxygen to water in the reaction.

Step-by-step explanation:

When considering the reaction of hydrogen and oxygen to form water, the balanced chemical equation is key: 2 H₂(g) + O₂(g) → 2 H₂O(l). This reaction shows that two molecules of hydrogen react with one molecule of oxygen to produce two molecules of water. Using this stoichiometry, we can answer the questions posed.

For the first question, 2.0 × 10²³ molecules of oxygen will produce twice as many water molecules because the stoichiometric ratio is 1:2 for oxygen to water. Therefore, 4.0 × 10²³ molecules of water will be produced.

For the second question pertaining to moles, if 22.5 moles of oxygen are reacted, it will produce twice that amount in moles of water since each mole of oxygen produces two moles of water. Therefore, 45.0 moles of water will be produced from 22.5 moles of oxygen.

Answer 2

(1) The number of molecules of water produced are,
`4.06* 10^(23)`

(2) The number of moles of water produced are, 45 moles

Explanation :

The balanced chemical reaction will be,

`2H_2+O_2\rightarrow 2H_2O`

For 1 :

From the balanced reaction, we conclude that

As, 1 molecule of oxygen react to produces 2 molecules of water

So,
`2.03* 10^(23)` molecule of oxygen react to produces
`2* (2.03* 10^(23))=4.06* 10^(23)` molecules of water

Therefore, the number of molecules of water produced are,
`4.06* 10^(23)`

For 2 :

From the balanced reaction, we conclude that

As, 1 mole of oxygen react to produces 2 mole of water

So, 22.5 mole of oxygen react to produces
`2* 22.5=45` moles of water

Therefore, the number of moles of water produced are, 45 moles