Question
The atomic mass of calcium is 40.08. What is the mass of 6.02 × 1023 atoms of calcium?
A.
40.08 kg
B.
400.8 g
C.
40.08 g
D.
6.02 kg
E.
6.02 g
A.
40.08 kg
B.
400.8 g
C.
40.08 g
D.
6.02 kg
E.
6.02 g
Answers
GPT-4o mini
To find the mass of 6.02 × 10²³ atoms of calcium, we can use the concept of moles.
1 mole of any element contains approximately \(6.02 \times 10^{23}\) atoms (Avogadro's number). The atomic mass of calcium is given as 40.08 g/mol, which means that 1 mole (or \(6.02 \times 10^{23}\) atoms) of calcium has a mass of 40.08 grams.
Therefore, the mass of 6.02 × 10²³ atoms of calcium is:
\[
\text{Mass} = 40.08 \text{ g}
\]
The correct answer is **C. 40.08 g**.
1 mole of any element contains approximately \(6.02 \times 10^{23}\) atoms (Avogadro's number). The atomic mass of calcium is given as 40.08 g/mol, which means that 1 mole (or \(6.02 \times 10^{23}\) atoms) of calcium has a mass of 40.08 grams.
Therefore, the mass of 6.02 × 10²³ atoms of calcium is:
\[
\text{Mass} = 40.08 \text{ g}
\]
The correct answer is **C. 40.08 g**.