Converting 53.3g of oxygen to moles will give you???
0.30 mol O
8.5 mol O
3.33 mol O
5.3 mol O
The Correct Answer and Explanation is :
To convert grams of oxygen (O₂) to moles, you need to use the molar mass of oxygen. The molar mass of O₂ (molecular oxygen) is approximately 32.00 grams per mole (g/mol), since each oxygen atom has a molar mass of about 16.00 g/mol, and there are two oxygen atoms in an O₂ molecule.
Calculation Steps:
- Identify the mass of oxygen: In this case, you have 53.3 grams of O₂.
- Use the molar mass: The molar mass of O₂ is 32.00 g/mol.
- Apply the formula:
[
\text{Moles of O}_2 = \frac{\text{mass of O}_2 (\text{g})}{\text{molar mass of O}_2 (\text{g/mol})}
] - Plug in the values:
[
\text{Moles of O}_2 = \frac{53.3 \, \text{g}}{32.00 \, \text{g/mol}} \approx 1.67 \, \text{mol O}_2
]
This calculation indicates that 53.3 grams of molecular oxygen corresponds to approximately 1.67 moles of O₂.
Answer Options:
Now, reviewing the provided answer options:
- 0.30 mol O
- 8.5 mol O
- 3.33 mol O
- 5.3 mol O
None of the options match our calculated result of 1.67 mol O₂. However, if we consider the amount of oxygen atoms in the original question, we must recognize that O₂ contains two oxygen atoms. Thus, to find the number of moles of individual oxygen atoms (O), you would double the moles of O₂:
[
\text{Moles of O} = 2 \times 1.67 \, \text{mol O}_2 \approx 3.34 \, \text{mol O}
]
This leads to the conclusion that approximately 3.33 moles of O atoms are present in 53.3 grams of O₂.
Correct Answer:
Therefore, the correct answer from the options given would be 3.33 mol O.
In summary, the conversion process illustrates how to determine the number of moles of a substance from its mass and how to interpret the results concerning molecular and atomic forms of elements.