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Zanzabum
2 years ago
6

Compare the properties of elements in groups 17 and group 18. Make sure to cover the following points:

Chemistry
2 answers:
My name is Ann [436]2 years ago
7 0
The answer for this question is b
murzikaleks [220]2 years ago
5 0

Answer:

The answer.

Explanation:

Group 17 consists of Halogens, and group 18 consists of Noble Gases.

Group 17 are very high electronegativities. They have seven valence electrons. They are highly reactive, especially with alkali metals and alkaline earth.  

In group 18 their elements are the most stable due to having the maximum number of valence electrons their outer shell can hold. Therefore, they rarely react with other elements since they are already stable.

Nobel gases are placed there because they are extremely unreactive.

Halogen elements are placed there because they have seven valence electrons, they only require one additional electron to form a full octet.

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Given the reaction:
STatiana [176]

answer:

as per the formula of given carbohydrate the answer is 15 moles

explanation:

  • 1 mole carbohydrate contains 6 moles water
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7 0
3 years ago
A 253 g block of wood has the following dimensions: Length 15.24 cm Width 6.64 cm Height 3.56 cm What is the density of the wood
yanalaym [24]

Answer:

0.7 g/cm³

Explanation:

<em>hey there,</em>

<em />

< The formula for density is p = \frac{m}{v}  where m = mass, v = volume, and p = density. An easy way to remember the formula is density equals love. I found this easy to remember because p = ♡ and when you think about it, if you split the heart in half through the middle like a fraction, it will make \frac{m}{v} (if you don't understand what I'm saying, try writing it out and you will be able to see what I'm talking about!)

We already know that the block is 253 g so the mass is 253 g.

To find the volume, always multiply the 3 values width, length, and height whenever you are trying to find the volume of a block.

15.24 cm x 6.64 cm x 3.56 cm = 360.25 cm³

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<u>Hope this helped! Feel free to ask anything else.</u>

4 0
3 years ago
Magnesium has three naturally occurring isotopes with masses of 23.99 amuamu, 24.99 amuamu, and 25.98 amuamu and natural abundan
bonufazy [111]

Answer:

24.309 g/mol

Explanation:

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Now, let's sum all three together

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3 years ago
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