brianna9718 brianna9718
  • 03-12-2015
  • Chemistry
contestada

calculate the mass in grams of 2.56x10 -3 mol of iron.

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c5h11no2
c5h11no2 c5h11no2
  • 03-12-2015
Fe (iron) = 55.8 grams Fe = 1 mole Fe

2.56 • 10^-3 moles Fe / 1 • 55.8 grams Fe / 1 mole Fe = 1.43 grams Fe

(The moles cancel out)

Basically you're just multiplying the molar mass of Fe (iron) by the moles of 2.56 • 10^-3 Fe (iron), to find how many grams are in it. 

2.56 • 10^-3 moles Fe = 1.43 grams Fe
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