Calculate the amount of matter and the mass of Water if three moles of oxygen were obtained during its decomposition.

univerkov | December 19, 2020 | education

Let’s write the equation of water dissociation:
2H2O = 2H2 + O2
make up the proportion, it can be seen that x = 6 mol
hmol / 2mol = 3mol / 1mol
x = (3mol * 2mol) / 1mol = 6mol
Find the mass of H2O by the formula)
m (H2O) = v * M = 6mol * 18g / mol = 108g
Answer: 108g

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