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3 years ago

Select the statement that is incorrect.

Chemistry

1 answer:

saveliy_v [14]3 years ago

6 0

Answer:

The 3rd sentence is the wrong one:

'All carbohydrates have the general formula Cn(H2O)n'

Explanation:

This is wrong because it's a formula that holds true for simple sugars, but not for complex ones.

Take sucrose as an example, its formula is C12H22O11. Clearly it's C12(H2O)11.

This is so, because when a glycosidic bond is formed, it does so with the loss of a water molecule; hence the reaction is called condensation.

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3 years ago

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2 years ago

The number at the end of an isotope's name is the number

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Answer:

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3 years ago

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fgiga [73]

A Grinder,A Mixer,A Car

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3 years ago

explain using diagrams how potassium forms the compound potassium flouride when it reacts with flourine

Katarina [22]

Answer:

The answer to your question is given below.

Explanation:

Potassium (K) has 19 electrons with electronic configuration of 2, 8, 8, 1.

Fluorine (F) has 9 electrons with electronic configuration of 2, 7.

Fluorine needs 1 electron to complete it's octet configuration.

Hence, potassium (K), will lose 1 electron to fluorine (F) to form potassium ion (K+) with electronic configuration of 2, 8, 8. The fluorine atom (F) will receive the 1 electron from potassium to form the fluoride ion (F-) with electronic configuration of 2, 8.

**** Please see attached photo for further details.

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2 years ago