The number of moles present in 24.5 g of HSO is

Options

A. 0.5
B. 0.2
C. 0.3
D. None of these

Explanation

To find the number of moles present in 24.5 g of HSO, we can follow these steps:

### Step 1: Determine the Molar Mass of HSO
To calculate the molar mass of HSO, we need to sum the atomic masses of its constituent elements:
- Hydrogen (H): 1 atom × 1 g/mol = 1 g/mol
- Sulfur (S): 1 atom × 32 g/mol = 32 g/mol
- Oxygen (O): 1 atom × 16 g/mol = 16 g/mol

Now, we can add these values together:
\[ \text{Molar mass of HSO} = 1 + 32 + 16 = 49 \text{ g/mol} \]

### Step 2: Use the Formula to Calculate Moles
The number of moles (n) can be calculated using the formula:
\[ n = \frac{\text{Given mass}}{\text{Molar mass}} \]
Here, the given mass of HSO is 24.5 g, and we have calculated the molar mass to be 49 g/mol. Plugging in these values:
\[ n = \frac{24.5 \text{ g}}{49 \text{ g/mol}} \]

### Step 3: Perform the Calculation
Now, we perform the division:
\[ n = \frac{24.5}{49} \approx 0.5 \text{ moles} \]

### Conclusion
Thus, the number of moles present in 24.5 g of HSO is approximately 0.5 moles.

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