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Setler79 [48]
3 years ago
15

(34.969amu)(0.7577) = (36.966amu)(0.2423) = +

Chemistry
1 answer:
Monica [59]3 years ago
7 0

Answer:

26.4 960 for the first one

8.9569 for the second one

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A heatwave occurs when a system of high atmospheric pressure moves into an area and lasts two or more days.

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How many moles of aluminum oxide al2o3 are in a sample with a mass of 204.0
erik [133]

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2 moles

Explanation:

Let us first start by calculating the molecular mass of Al₂O₃.

The mass of a mole of any compound is called it's molar mass. 1 molar mass 6.02 X 10²³, or Avogadro's number, of compound entities.

Say, 1 mole of Al₂O₃ has 6.02 X 10²³ of Al₂O₃ molecules/atoms. It also has 2*6.02 X 10²³ number of Al atoms and 3*6.02 X 10²³ number of O atoms.

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Therefore, molecular mass of Al₂O₃ is:

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1mole weighs 102 u

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