According to the reaction equation Fe (OH) ₂ = FeO + H₂O Determine the mass of iron oxide (II) formed during the decomposition

According to the reaction equation
Fe (OH) ₂ = FeO + H₂O
Determine the mass of iron oxide (II) formed during the decomposition of 45 g of the starting material.

Decision:
Fe (OH) 2 = FeO + H2O
n (Fe (OH) 2 = 45/90 = 0.5 mol
n (Fe (OH) 2): n (FeO) = 1: 1
n (FeO) = 0.5 mol
m (FeO) = 0.5 x 72 = 36 g
Answer: 36 grams

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