Vitamin C is known to contain 1.29×`10^24` hydrogen atoms. Calculate the number of moles of hydrogen atoms.

Options

A. 2.14
B. 4.21
C. 1.42
D. 3.21

Explanation

To calculate the number of moles of hydrogen atoms in Vitamin C, we can follow these steps:

### Step 1: Understand the formula for calculating moles
The number of moles (n) can be calculated using the formula:
\[ n = \frac{\text{Number of atoms}}{\text{Avogadro's number}} \]

### Step 2: Identify the given values
From the problem, we have:
- Number of hydrogen atoms = \( 1.29 \times 10^{24} \)
- Avogadro's number = \( 6.02 \times 10^{23} \) atoms/mole

### Step 3: Substitute the values into the formula
Now we can substitute the values into the formula:
\[ n = \frac{1.29 \times 10^{24}}{6.02 \times 10^{23}} \]

### Step 4: Perform the division
To simplify the calculation, we can rewrite it as:
\[ n = \frac{12.9 \times 10^{23}}{6.02 \times 10^{23}} \]
Now, we can cancel \( 10^{23} \) from the numerator and the denominator:
\[ n = \frac{12.9}{6.02} \]

### Step 5: Calculate the result
Now we perform the division:
\[ n \approx 2.14 \]

### Conclusion
Thus, the number of moles of hydrogen atoms in Vitamin C is approximately \( 2.14 \) moles.