Question

the molar mass of iron, fe, is 55.85 g/mol. how many moles of iron are in 151.9 grams of iron? ? mol fe

Explanation:

Step1: Recall the formula for moles

The formula for calculating the number of moles \(n\) is \(n=\frac{m}{M}\), where \(m\) is the mass and \(M\) is the molar mass.

Step2: Substitute the given values

Given \(m = 151.9\space g\) and \(M=55.85\space g/mol\). Then \(n=\frac{151.9}{55.85}\).

Step3: Calculate the value

\(n=\frac{151.9}{55.85}\approx 2.72\)

Answer:

\(2.72\)