Answer:
1 mol of hydrogen peroxide (H₂O₂)
Explanation:
Convert the number of oxygen atoms to moles
[tex]\text{Moles of O atoms} = 1.2 \times 10^{24}\text{ O atoms} \times \dfrac{\text{1 mol O atoms}}{6.022 \times 10^{23}\text{ O atoms }} = \text{2.0 mol O atoms}[/tex]
1 mol of H₂O₂ contains 2 mol of O atoms.
B is wrong. 1 mol of H₂O contains 1 mol of O atoms.
C and D are wrong. NH₃ and H₂ contain no O atoms.
Answer: The correct answer is 1 mole of peroxide [tex](H_2O_2)[/tex]
Explanation:
According to mole concept:
1 mole of a substance contains [tex]6.022\times 10^{23}[/tex] number of atoms.
For the given options:
Option 1: 1 mole of hydrogen peroxide [tex](H_2O_2)[/tex]
1 mole of hydrogen peroxide contains 2 moles of hydrogen atom and 2 moles of oxygen atoms.
This means that 1 mole of hydrogen peroxide contains [tex](2\times 6.022\times 10^{23}=1.2\times 10^{24})[/tex] number of oxygen atoms.
Option 2: 1 mole of water [tex](H_2O)[/tex]
1 mole of water contains 2 moles of hydrogen atom and 1 moles of oxygen atoms.
This means that 1 mole of water contains [tex](1\times 6.022\times 10^{23}=6.022\times 10^{24})[/tex] number of oxygen atoms.
Option 3: 2 moles of ammonia [tex](NH_3)[/tex]
1 mole of ammonia contains 1 moles of nitrogen atom and 3 moles of hydrogen atoms.
This compound do not contain any oxygen atom.
Option 4: 2 moles of hydrogen gas [tex](H_2)[/tex]
1 mole of hydrogen gas contains 2 moles of hydrogen atoms.
This compound do not contain any oxygen atom.
Hence, the correct answer is 1 mole of peroxide [tex](H_2O_2)[/tex]
