Calculate number of atoms in 0.5 mole of oxygen atoms.

Answer

To calculate the number of atoms in 0.5 mole of oxygen atoms, we can follow these steps:

### Step 1: Understand the concept of a mole
One mole of any substance contains Avogadro's number of particles (atoms, molecules, etc.), which is approximately \(6.022 \times 10^{23}\).

### Step 2: Set up the calculation
We need to find the number of atoms in 0.5 moles of oxygen atoms.

### Step 3: Use the formula
To find the number of atoms, we can use the formula:
\[ \text{Number of atoms} = \text{Number of moles} \times \text{Avogadro's number} \]
Substituting the values:
\[ \text{Number of atoms} = 0.5 \, \text{moles} \times 6.022 \times 10^{23} \, \text{atoms/mole} \]

### Step 4: Perform the calculation
Calculating the above expression:
\[ \text{Number of atoms} = 0.5 \times 6.022 \times 10^{23} = 3.011 \times 10^{23} \, \text{atoms} \]

### Conclusion
The number of atoms in 0.5 mole of oxygen atoms is \(3.011 \times 10^{23}\).

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