Question

How many atoms does 3.0 grams of carbon represent?

Answer 1

Answer on Question #50181 - Chemistry - Other

Question

How many atoms does 3.0 grams of carbon represent?

Answer:

Calculate the number of atoms in $3.0\mathrm{g}$ of carbon. The formula is:

$$N = \frac{m \cdot N_A}{M}$$

m – the mass of carbon, $m = 3.0\mathrm{g}$;

$N_A$ – Avogadro constant, $N_A = 6.022 \cdot 10^{23} \mathrm{~mol}^{-1}$;

M – molar mass of carbon, $M = 12 \mathrm{~g} / \mathrm{mol}$.

Number of atoms in $3.0\mathrm{g}$ of carbon is:

$$N(C) = \frac{3.0 \cdot 6.022 \cdot 10^{23}}{12} = 1.5 \cdot 10^{23} \text{ atoms}$$

Answer: $1.5 \cdot 10^{23}$ atoms

http://www.AssignmentExpert.com/