Question

calculate the number of moles corresponding to 168g of iron.​

Answer 1

Answer:

use the formula: n = m/M, where:

n = moles

m = given mass in grams (168 g Fe)

M = molar mass (56 g/mol)

According to the formula, divide given mass in grams by the molar mass. Since molar mass is a fraction, you can divide by multiplying by its reciprocal mol/g. This makes it easier to see how grams cancel, leaving moles.

168 g Fe × (1 mol Fe/56 g Fe) = 3.0 mol Fe to two significant figures

Answer: 168 g Fe = 3.0 mol Fe

Explanation:

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