The number of gm atoms of oxygen present in 0.2 mole of `H_(2)S_(2)O_(8)` is.

Options

A. `0.2`
B. `8`
C. `1.6`
D. `0.8`

Answer

To solve the problem of finding the number of gram atoms of oxygen present in 0.2 moles of \( H_2S_2O_8 \), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Chemical Formula**:
The chemical formula given is \( H_2S_2O_8 \).

2. **Determine the Number of Oxygen Atoms in One Mole**:
From the chemical formula \( H_2S_2O_8 \), we can see that there are 8 oxygen atoms in one molecule of \( H_2S_2O_8 \).

3. **Calculate the Number of Oxygen Atoms in 0.2 Moles**:
Since 1 mole of \( H_2S_2O_8 \) contains 8 oxygen atoms, we can calculate the number of oxygen atoms in 0.2 moles:
\[ \text{Number of oxygen atoms} = 0.2 \, \text{moles} \times 8 \, \text{gram atoms/mole} = 1.6 \, \text{gram atoms} \]

4. **Conclusion**:
Therefore, the number of gram atoms of oxygen present in 0.2 moles of \( H_2S_2O_8 \) is 1.6.

### Final Answer:
The number of gram atoms of oxygen present in 0.2 moles of \( H_2S_2O_8 \) is **1.6**.

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