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krek1111 [17]
2 years ago
6

14. Calculate the mass in grams of oxygen required to react completly with 0.75 moles of Aluminum.

Chemistry
1 answer:
cluponka [151]2 years ago
8 0
  • 3mols of O_2 react with 4mol of Al
  • 3/4=0.75mol O_2 react with 1mol of Al

Moles of O_2:-

  • 0.75(0.75)
  • 0.5625mol

Mass of O_2:-

  • moles(Molar mass)
  • 0.5625(32)
  • 18g

Option B

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What volume of 0.08892 M HNO3 is required to react completetly with 0.2352 g of potassium hydrogen phosphate?
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Answer:

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Explanation:

Given:

Mass of the potassium hydrogen phosphate = 0.2352

Molarity of the HNO₃ Solution = 0.08892 M

Now,

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The number of moles of 0.2352 g of potassium hydrogen phosphate

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thus,

for 0.0027 mol of HNO₃, we have

0.08892 = 0.0027 / Volume

or

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