Water can be separated into its elements to the following equation electrolysis.
ID: 527843 • Letter: W
Question
Water can be separated into its elements to the following equation electrolysis. If 20.0 g of water is decomposed by this oxygen gas produced? method how much oxygen gas is produced? 2H_O (l) rightarrow 2 H_2(g) + O_2(g) 10.0 g 8.90 g 35.6 g 16.0 g 17.8 g Ibuprofen is 75.69%C, 8.80% H, and 15.51% O by mass. What is its empirical formula? C_6 H_9O C_7H_18O_2 C_7H_9O_2 C_13H_18O_2 An important intermediate reaction in the industrial production process of nitric acid is shown. What is the theoretical yield of H_20 (18.02 g/mol) if 45.0 kg of NH_3 (17.04g/mol) reacts with excess O_2 (32.00 g/mol)? 4 NH_3(g)+ 5 O_2 (g) rightarrow 4 NO(g) 6 + H_20 (l) 42.6 kg 54.1 kg 47.6 kg 17.8 kg 71.4 kgExplanation / Answer
24)
mol of H2O decomposed = mass of H2O / molar mass of H2O
= 20.0 g / 18 g/mol
= 1.11 mol
From given reaction,
mol of O2 produced = (1/2)*mol of H2O decomposed
= (1/2)*1.11 mol
= 0.555 mol
mass of O2 = number of mol of O2 * molar mass of O2
= 0.555 mol * 32 g/mol
= 17.8 g
Answer: E
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