Given that the molecular mass of iron is 56 and that of oxygen is 16,
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Given that the molecular mass of iron is 56 and that of oxygen is 16, how many moles of iron (III) oxide will be contained in 1kg of the compound?
- A) 12.5 moles
- B) 0.625 moles
- C) 25 moles
- D) 6.25 moles
Correct Answer: D) 6.25 moles
Explanation
First, we need to determine the molar mass of iron (III) oxide (Fe?O?). To do this, we can use the given molecular masses of iron (Fe) and oxygen (O).
The molecular mass of iron (Fe) is 56, and since there are 2 iron atoms in the formula Fe?O?, the total mass of iron in the compound is 2
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