what is the mass of 2.50 mol of iron (ii) hydroxide: fe(oh)2? 10.8 g 20.6 g 113 g 225 done
what is the mass of 2.50 mol of iron (ii) hydroxide: fe(oh)2? 10.8 g 20.6 g 113 g 225 done
Answer
Explanation:
Step1: Calculate molar - mass of Fe(OH)₂
The molar mass of Fe is approximately 55.85 g/mol, O is approximately 16.00 g/mol, and H is approximately 1.01 g/mol. For Fe(OH)₂, molar mass (M = 55.85+(2\times(16.00 + 1.01))=55.85+(2\times17.01)=55.85 + 34.02=89.87) g/mol.
Step2: Calculate mass using moles and molar - mass
The formula for mass (m=n\times M), where (n = 2.50) mol and (M = 89.87) g/mol. (m=2.50\ mol\times89.87\ g/mol = 224.675\ g\approx225\ g)
Answer:
225 g