4.9x[tex]10^{24}[/tex] molecules are present in 8.2 moles of [tex]CO_2[/tex]. Hence, option B is correct.
A mole is defined as 6.02214076 × [tex]10^{23}[/tex]of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.
Molecules are present in 8.2 moles of CO2:
8.2 x 6.02x[tex]10^{23}[/tex]
= 4.9x[tex]10^{24}[/tex]
Hence, 4.9x[tex]10^{24}[/tex] molecules are present in 8.2 moles of [tex]CO_2[/tex].
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