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maksim [4K]
3 years ago
5

How many carbon atoms are there in 2.12 molecules of propane? (C3H8)

Chemistry
1 answer:
Afina-wow [57]3 years ago
5 0
<span>Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles. We use this in calculating the number of atoms. 

</span>2.12 mol C3H8 (3 mol C / 1 mol C3H8) (6.022 x 10^23 atoms / mol) = 3.83 x 10^24 atoms C
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Explanation:

The ratio can be expressed as:

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Mb is the molecular mass of CO2 = 44

Therefore

Ua/Ub= √(44/2)

Ua/Ub = 4.69

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