Question

Rachel has a sample containing 2 moles of carbon. How many atoms of carbon are in this sample?

a. 2.044 × 1023 atoms
b. 6.022 × 2023 atoms
c. 1.204 × 1024 atoms
d. 6.022 × 1046 atoms

Answer 1

Answer is C

Step-by-step explanation:

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Answer 2

Answer is: c. 1.204 × 10²⁴ atoms of carbon.

n(C) = 2 mol; amount of substance of carbon.

Na = 6.02·10²³ 1/mol; Avogadro constant (the number of constituent particles, in this example atoms, that are contained in the amount of substance given by one mole).

N(C) = n(C) · Na.

N(C) = 2 mol · 6.02·10²³ 1/mol.

N(C) = 12.04·10²³ = 1.204·10²⁴; number of carbon atoms in a sample.