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olya-2409 [2.1K]
3 years ago
7

rank the 4 gases (air,exhaled air, gas produced from decomposition of H202, gas from decomposition of NaHCO3) in order of increa

sing concentration of oxygen
Chemistry
1 answer:
nikitadnepr [17]3 years ago
7 0
Air has about 21% oxygen
Exhaled air has about 16% oxygen
The gas produced from decomposition of H₂O₂ is pure oxygen
The gas produced from decomposition of NaHCO₃ is pure carbon dioxide
Thus, the order is:
1) Gas produced from decomposition of H₂O₂
2) Air
3) Exhaled air
4) Gas produced from decomposition of NaHCO₃
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Answer:

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Explanation:

To solve this question we must find the moles of the anhydrate. The difference in mass between the dry and the anhydrate gives the mass of water. Thus, we can find the moles of water and the moles of water per mole of anhydrate:

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