Find the mass of potassium oxide formed in the reaction of oxygen and 78 g of potassium.
| December 11, 2020 | education
4K + O2 = 2K2O n (К) = 78g: 39g / mol = 2mol 4: 2 = 2: 1 => nK2O = 1mol m = 1mol * 94g / mol = 94g
answer: the mass of potassium oxide is ninety-four grams
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