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stichgotrich7159
18.06.2020 •
Chemistry
How many grams of oxygen gas must react to give 1.28 g of ZnO:
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Ответ:
0.252 g O₂
Explanation:
Step 1: Find RxN
O₂ (g) + Element X (s) → ZnO (s)
O₂ (g) + Zn (s) → ZnO (s)
Step 2: Balance RxN
We need 2 oxygens on both sides.
We would also need 2 zincs on both sides if we balance oxygenO₂ (g) + 2Zn (s) → 2ZnO (s)
Step 3: Define
Given - 1.28 g ZnO
Find - x g O₂
Molar Mass of Zn - 65.39 g/mol
Molar Mass of O - 16.00 g/mol
Molar Mass of O₂ - 2(16.00) = 32.00 g/mol
Molar Mass of ZnO - 65.39 + 16.00 = 81.39 g/mol
Step 4: Stoichiometry
Step 5: Simplify
We are given 3 sig figs.
0.251628 g O₂ ≈ 0.252 g O₂
Ответ:
The structure of ammonium lauryl sulfate is described below in complete details.
Explanation:
The compound comprises ammonium ions and lauryl sulfate. Lauryl sulfate includes lauric acid (in white and black), the fatty acid produced by the covalent bonds among C-C connected to hydrogen, and lauric acid (in red) between C-S covalent bond connected to sulfate ions. oxygen is connected to Sulfur through covalent bonds. In Ammonium ions, N is enclosed by four hydrogen atoms.