Calculate the mass in grams of 0.17 mole of `H_2S`.

Explanation

To calculate the mass in grams of 0.17 moles of H₂S, follow these steps:

### Step 1: Determine the Molar Mass of H₂S
- **Hydrogen (H)** has an atomic mass of approximately 1 g/mol. Since there are 2 hydrogen atoms in H₂S:
\[ \text{Mass of H} = 2 \times 1 = 2 \text{ g/mol} \]
- **Sulfur (S)** has an atomic mass of approximately 32 g/mol.
- Therefore, the molar mass of H₂S is:
\[ \text{Molar Mass of H₂S} = \text{Mass of H} + \text{Mass of S} = 2 + 32 = 34 \text{ g/mol} \]

### Step 2: Use the Formula to Calculate Mass
- The formula to calculate mass from moles is:
\[ \text{Mass} = \text{Number of Moles} \times \text{Molar Mass} \]
- Given that the number of moles of H₂S is 0.17, we can substitute the values into the formula:
\[ \text{Mass of H₂S} = 0.17 \text{ moles} \times 34 \text{ g/mol} \]

### Step 3: Perform the Calculation
- Now, calculate the mass:
\[ \text{Mass of H₂S} = 0.17 \times 34 = 5.78 \text{ grams} \]

### Final Answer
- The mass of 0.17 moles of H₂S is **5.78 grams**.

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