Question

How many carbon atoms are there in a 1.3-carat diamond? Diamonds are a form of pure carbon. (1 carat = 0.20g) please show steps.

Answer 1

Explanation:

Part A

How many carbon atoms are there in a 1.3-carat diamond? Diamonds are a form of pure carbon. (1 carat = 0.20 grams)

Express your answer to two significant figures.

carbon atoms =

Part B

Calculate the mass of 2.25

Answer 2

Question:

How many carbon atoms are there in a 1.3-carat diamond?

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Answer:

1.3 x 10²² C atoms

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Explanation:

If 1 carat weighs 0.20 g. Then 0.3 carat weighs = 0.20 / 0.3 = 0.06 g

Thus, 1.3 carat = 0.26g

Find the moles first:

Moles=  $\frac{Mass\:\:of\:\:carbon}{Molar\:\:mass\:\:of\:\:carbon}$

0.26 / 12 = 0.0216 moles of C

Atoms = Moles × Avogadro's number (6.022 × 10²³)

0.0216 * 6.022*10^23 = 1.3 × 10²² C atoms  (Approximately)

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