How many no of moles of oxygen are present in 64g of oxygen molecule?

Answer

To find the number of moles of oxygen present in 64 grams of oxygen molecules (O₂), we can follow these steps:

### Step 1: Understand the Concept of Moles
The number of moles of a substance can be calculated using the formula:

\[ \text{Number of moles} = \frac{\text{Given mass (g)}}{\text{Molar mass (g/mol)}} \]

### Step 2: Identify the Given Mass
In this problem, the given mass of oxygen (O₂) is 64 grams.

### Step 3: Determine the Molar Mass of Oxygen Molecule
The molar mass of an oxygen molecule (O₂) can be calculated by adding the atomic masses of the two oxygen atoms. The atomic mass of oxygen is approximately 16 g/mol. Therefore, for O₂:

\[ \text{Molar mass of O₂} = 2 \times 16 \, \text{g/mol} = 32 \, \text{g/mol} \]

### Step 4: Substitute the Values into the Formula
Now, we can substitute the given mass and the molar mass into the formula:

\[ \text{Number of moles} = \frac{64 \, \text{g}}{32 \, \text{g/mol}} \]

### Step 5: Calculate the Number of Moles
Now, perform the division:

\[ \text{Number of moles} = \frac{64}{32} = 2 \, \text{moles} \]

### Conclusion
Thus, in 64 grams of oxygen molecules (O₂), there are 2 moles of oxygen present.

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