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Answer :
Final answer:
To convert grams of a substance to moles, we use the formula: Moles = mass / molar mass. After calculating, we find Aluminum = 1.22 moles, Copper = 0.56 moles, Iron = 0.78 moles, Lead = 0.25 moles, and Zinc = 0.56 moles.
Explanation:
To convert grams into moles, we use the molar mass of each metal as a conversion factor. The molar mass of a substance is defined as the mass in grams of one mole of that substance, which contains approximately 6.022 x 10^23 atoms or molecules.
Therefore, to calculate moles, we use the formula: Moles = mass (in grams) / molar mass (in grams/mole).
For each metal you mentioned, we would divide the given mass by its molar mass:
- Aluminum: 33.0 g / 26.98 g/mol = 1.22 moles
- Copper: 35.3 g / 63.5 g/mol = 0.56 moles
- Iron: 43.4 g / 55.8 g/mol = 0.78 moles
- Lead: 51.2 g / 207 g/mol = 0.25 moles
- Zinc: 36.3 g / 65.4 g/mol = 0.56 moles
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