How many atoms of carbon are in 2.65 g of carbon?

0.1324 ×10^24 atoms of carbon are in 2.65 g of carbon

Explanation:

Converting the grams of carbon to the moles of carbon.

Divide the mass (2.65 g) by 12.011 g/mol which is the molecular weight of carbon,

2.65 g / 12.011 g/mol=0.220 moles of carbon

Then, convert moles of carbon to atoms of carbon using Avogadro's constant (6.022×10^23 atoms per mole)

0.220 moles × 6.022×10^23 atoms / 1 mole = 0.1324 ×10^24 atoms

0.1324 ×10^24 atoms of carbon are in 2.65 g of carbon

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