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wel
4 years ago
5

As you move from left to right across a period, what happens to the atomic radil?

Chemistry
1 answer:
egoroff_w [7]4 years ago
4 0

Answer:

Moving Across a Period

Moving from left to right across a period, the atomic radius decreases. The nucleus of the atom gains protons moving from left to right, increasing the positive charge of the nucleus and increasing the attractive force of the nucleus upon the electrons

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Vhat are some of the benefits and drawbacks of recycling?​
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3 years ago
How many moles of oxygen are needed to react with 87 grams of aluminum
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Answer:

2.4 moles of oxygen are needed to react with 87 g of aluminium.

Explanation:

Chemical equation:

4Al(s)  + 3O₂(l)   → 2AlO₃(s)

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Moles of oxygen needed = ?

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Now we will compare the moles of aluminium with oxygen.

                              Al         :         O₂

                               4          :         3

                               3.2       :         3/4×3.2 = 2.4 mol

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