Mass of one atom of oxygen is

Options

A. `(16)/(6.023 xx 10^(23))`g
B. `(32)/(6.023 xx10^(23))g`
C. `1/(6.023 xx 10^(23))`g
D. 8 u

Explanation

To find the mass of one atom of oxygen, we can follow these steps:

### Step 1: Understand the Atomic Mass of Oxygen
The atomic mass of oxygen is approximately 16 grams per mole. This means that one mole of oxygen atoms (which contains Avogadro's number of atoms) has a mass of 16 grams.

### Step 2: Use Avogadro's Number
Avogadro's number is \(6.023 \times 10^{23}\), which is the number of atoms in one mole of any substance.

### Step 3: Calculate the Mass of One Atom
To find the mass of one atom of oxygen, we divide the atomic mass of oxygen by Avogadro's number:
\[ \text{Mass of one atom of oxygen} = \frac{\text{Atomic mass of oxygen}}{\text{Avogadro's number}} = \frac{16 \text{ grams}}{6.023 \times 10^{23}} \]

### Step 4: Simplify the Calculation
Now, we can simplify this expression:
\[ \text{Mass of one atom of oxygen} = \frac{16}{6.023 \times 10^{23}} \text{ grams} \]

### Conclusion
Thus, the mass of one atom of oxygen is:
\[ \frac{16}{6.023 \times 10^{23}} \text{ grams} \]
This corresponds to option A in the provided choices.

### Final Answer
**The mass of one atom of oxygen is \(\frac{16}{6.023 \times 10^{23}}\) grams.**

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