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vagabundo [1.1K]
3 years ago
11

A. gaining 3 electrons

Chemistry
1 answer:
sp2606 [1]3 years ago
8 0

Answer: C. Gaining 5 electrons

Explanation: Aluminium has 3 valence electrons to have a full outer shell it would need 5 to become an octet (8).

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tresset_1 [31]

Answer: A Confucian

Explanation:

In the year 2005, the Guinness Book of World Records recognized the Confucius genealogical line as the longest family tree in history. They have a record of 86 generations over 2,500 years. Confucius (551 to 479 BCE) is believed to have about 3 million descendants all over the world.

So the interest Melissa has in her family tree and also wanting to know how her family has changed over its many generations probably suggests that Melissa more closely resembles a Confucian.

6 0
3 years ago
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Helga [31]

Answer:

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Explanation:

7 0
3 years ago
12.5 mL of 0.280 M HNO3 and 5.0 mL of 0.920 M KOH are mixed. Is the resulting solution acidic, basic or neutral?
svlad2 [7]

Answer:

The resulting solution is basic.

Explanation:

The reaction that takes place is:

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First we <u>calculate the added moles of HNO₃ and KOH</u>:

  • HNO₃ ⇒ 12.5 mL * 0.280 M = 3.5 mmol HNO₃
  • KOH ⇒ 5.0 mL * 0.920 M = 4.6 mmol KOH

As <em>there are more KOH moles than HNO₃,</em> the resulting solution is basic.

8 0
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What do scientists use to increase the surface area of a solute
marta [7]

use a mortar & pestle to grind the solute into smaller particles, thus increasing the surface area.


6 0
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In an endothermic reaction, a drop in temperature would be observed.<br><br> TRUE<br> or <br> FALSE
zvonat [6]
The answer is True! Hope this helps correct me if I’m wrong
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