Question

You need 2.5 mol of iron (fe) for an experiment. how many grams of iron must you measure out?

Answer 1

To obtain 2.5 moles of iron for an experiment, you need to measure out 139.625 grams, using the atomic molar mass of iron which is 55.85 grams per mole.

Step-by-step explanation:

To determine the mass of iron (Fe) you must measure out to obtain 2.5 moles, you first need to know the atomic molar mass of iron. The molar mass of iron is 55.85 grams per mole. Therefore, you can calculate the mass required by multiplying the number of moles needed for your experiment by the molar mass of iron:

Mass of iron = Number of moles × Molar mass of iron

Mass of iron = 2.5 moles × 55.85 g/mol

Mass of iron = 139.625 grams

This is the amount of iron you would need to measure out for your experiment.

Answer 2

The relationship between the mole and the mass of an element is given by this equation: mass in grams = moles * molar mass of iron
mass of iron needed = 2.5 * 56 = 140g.
Therefore, 140g of iron is needed.