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xxTIMURxx [149]
3 years ago
11

describe some acidic oxides that can be prepared by the thermal decomposition of nitrates and carbonates​

Chemistry
1 answer:
ale4655 [162]3 years ago
7 0
The oxidation is the best thing
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Solid potassium chlorate (kclo3) decomposes into potassium chloride and oxygen gas when heated. how many moles of oxygen form wh
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Answer:

  • <u>0.665 mol of O₂.</u>

Explanation:

<u>1. Molecular chemical equation:</u>

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<u>2. Mole ratios:</u>

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<u>3. Number of moles of KClO₃</u>

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  • Number of moles of KClO₃ = 54.3 g / 122.5 g/mol ≈ 0.44308 mol

<u>3. Number of moles of O₂</u>

As per the theoretical mole ratio 2 mol of KClO₃ produce 3 mol of O₂, then set up a proportion to determine how many  moles of O₂ will be produced from 0.44038 mol of KClO₃.

  • 3 mol O₂ / 2 mol KClO₃ = x / 0.44038 mol KClO₃

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Round to 3 significant figures: 0.665 mol of O₂ ← answer

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Answer: Krypton

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Krypton, if you look at the periodic table, has an atomic mass of approximately 84. It has a large nucleus, so while it is stable (due to its full octet) the nucleus is probably unstable due to repulsive forces between protons in the nucleus so is probably radioactive.

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