Respuesta :
Explanation:
According to Avogadro's number there are [tex]6.023 \times 10^{23}[/tex] atoms present in one mole.
Therefore, we will calculate the number of moles present in [tex]1.29 \times 10^{24}[/tex] atoms as follows.
Number of moles = [tex]\frac{1.29 \times 10^{24}atoms}{6.023 \times 10^{23}}atoms/mol[/tex]
= 2.14 mol
Therefore, we can conclude that there are 2.14 moles present in [tex]1.29 \times 10^{24}[/tex] hydrogen atoms in HF.
The number of moles in [tex]1.29 \times 10^{24}[/tex] hydrogen atoms is 2.1
Number of hydrogen atoms = [tex]1.29 \times 10^{24}[/tex]
Number of moles = (Number of atoms) / (Avogadro's constant)
Avogadro's constant = [tex]6.02 \times 10^{23}[/tex] atoms
Number of moles = [tex]\frac{1.29 \times 10^{24}}{6.02 \times 10^{23}}[/tex]
This can be further simplified as:
Number of moles = 0.21 x 10
Number of moles = 2.1 moles
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