The number of moles that are present in 7.80 × 10²² molecules of HCl is 0.13 moles
What is the number of moles?
The number of moles of a substance is defined as the mass of the substance divided by the molar mass of such a substance. Also, one mole of a substance is synonymous and equal to 6.023 × 10²³ Avogadro's number.
- So, If 1 molecule of HCl = 6.023 × 10²³ mole
- x molecules of HCl = 7.80 × 10²² molecules:
Therefore, the number of moles that are present in 7.80 × 10²² molecules of HCl can be computed as:
[tex]\mathbf{=\Big(7.80 \times 10^{22} \times \dfrac{1}{6.02\times 10^{23} }\Big)\ moles}[/tex]
= 0.12956 moles
≅ 0.13 moles of HCl
Learn more about the number of moles of a substance here:
https://brainly.com/question/15356425
