The number of moles present in 98 g of HSO is

Options

A. 1
B. 2
C. 3
D. 4

Explanation

To find the number of moles present in 98 g of HSO, we can follow these steps:

### Step 1: Determine the molar mass of HSO
- The molar mass is calculated by adding the atomic masses of each element in the compound.
- The atomic mass of Hydrogen (H) = 1 g/mol
- The atomic mass of Sulfur (S) = 32 g/mol
- The atomic mass of Oxygen (O) = 16 g/mol

**Calculation:**
\[ \text{Molar mass of HSO} = \text{Atomic mass of H} + \text{Atomic mass of S} + \text{Atomic mass of O} = 1 + 32 + 16 = 49 \text{ g/mol} \]

### Step 2: Use the formula to calculate the number of moles
- The formula to calculate the number of moles (n) is:
\[ n = \frac{\text{Given mass}}{\text{Molar mass}} \]
- Here, the given mass of HSO = 98 g and the molar mass = 49 g/mol.

**Calculation:**
\[ n = \frac{98 \text{ g}}{49 \text{ g/mol}} = 2 \text{ moles} \]

### Final Answer:
The number of moles present in 98 g of HSO is **2 moles**.

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