Final answer:
To calculate the number of moles of iron reacting, divide the mass of iron (5g) by the molar mass of iron (55.85 g/mol) to get 0.0895 moles.
Step-by-step explanation:
To calculate the number of moles of iron reacting, we use the molar mass of iron. The molar mass of iron (Fe) is 55.85 g/mol, as found on the periodic table. Given that we have 5g of iron, we can calculate the moles of iron as follows:
Step 1: Find the molar mass of iron
The molar mass of iron is 55.85 g/mol.
Step 2: Calculate the moles of iron
Moles of iron = Mass of iron (g) / Molar mass of iron (g/mol)
Moles of iron = 5 g / 55.85 g/mol = 0.0895 mol
Therefore, the number of moles of iron reacting with the acid is 0.0895 mol.