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3 years ago

Which the following classes of compound is an example of acarbonyl compound

Chemistry

2 answers:

melomori [17]3 years ago

5 0

Answer:

b) carboxylic acid

Explanation:

kherson [118]3 years ago

3 0

Carboxyllic acids and anhydrides

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3 years ago

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shtirl [24]

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3 years ago

The density of water is 1.00 g/ml at 4°c. how many water molecules are present in 2.36 ml of water at this temperature?

spin [16.1K]

Mass of 1 ml of water 1 g as density of water 1.00 g/ml at 4° C. So, mass of 2.36 ml of water $\frac{1}{2.36}$ g= 0.423 g.

Molecular mass of water is 18 g which indicates 18 g water contains 6.023 X $10^{23}$ number of water molecules. So, 0.423 g of water contains $\frac{6.023 X 10^{23} X 0.423 }{18} g$ = 0.141 X $10^{23}$ number of water molecules= 1.41 X $10^{22}$ number of water molecules.

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4 years ago

What is the orbital diagram for fluorine?

pogonyaev

Explanation:

The orbital for fluorine is 1s 2s 2p. All of the boxes should be filled COMPLETELY until you can't no more. How do you know if you can't anymore? By the atomic number of the element. The atomic number for fluorine is 9. So, you keep adding arrows starting from the first box all the way to the last until you have reached the atomic number, in this case, 9.

Answer:

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3 years ago

Why aluminium is used to make aeroplanes

liberstina [14]

Answer:

Aluminum (blended with small quantities of other metals) is used on most types of aircraft because it is lightweight and strong. Aluminum alloys don't corrode as readily as steel. It has also been used for the skin of some high-speed airplanes, because it holds its strength at higher temperatures better than aluminum.

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3 years ago