What amount of the substance is: 12 g of magnesium 14 g of potassium hydroxide.

univerkov | December 21, 2020 | education

Let’s use the formula: n = m / M, where n is the amount of the substance, m is the mass of the substance, M is the molar mass
n (Mg) = 12 g / 24 g / mol = 0.5 mol
n (KOH) = 14 g / (39 + 16 + 1) g / mol = 14 g / 56 g / mol = 0.25 mol

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