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3 years ago

4 Al + 3 O2 --> 2 Al2O3

Chemistry

1 answer:

SIZIF [17.4K]3 years ago

5 0

Answer:

The answer to your question is 7.4 moles of Aluminum

Explanation:

Data

moles of Al = ?

moles of Al₂O₃ = 3.7

Balanced chemical reaction

4 Al + 3 O₂ ⇒ 2 Al₂O₃

To solve this problem use proportions and cross multiplication. Use the coefficients of the balanced chemical equation.

4 moles of Aluminum ----------------- 2 moles of Al₂O₃

x ----------------- 3.7 moles of Al₂O₃

x = (3.7 x 4) / 2

x = 14.8 / 2

x = 7.4 moles of Aluminum

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Tomtit [17]

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<em>Where 2 moles of KHP reacts per mole of barium hydroxide</em>

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4 0

3 years ago

Please help thank you

Darina [25.2K]

Based on the Hund's Rule, the three electrons in a 2p orbital are arranged as shown in option C.

<h3>What is an orbital?</h3>

The term orbital refers to a region in space where there is a high probability of finding the electron. We know that an electron in an atom could be defined by the use of four sets of quantum numbers which are;

The principal quantum number
The orbital quantum number
The spin quantum number
The magnetic quantum number

Hund's rule states that, electrons occur singly before pairing takes place. In this case, we can see that the only arrangement that obeys the Hund's Rule is option C.

Learn more about Hund's rule:brainly.com/question/12646067

#SPJ1

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8 months ago