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4 years ago

Who derived benzene in chemistry

1 answer:

8 0

The chemical formula of benzene is C6H6, so it consists of six carbon atoms and six hydrogen atoms. Benzene is an aromatic hydrocarbon, which is a chemical compound consisting of carbon and hydrogen atoms with alternating double bonds forming a ring.

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whats the name of the group 13 of the periodic table? 14 is cristalogens and 15 pnictogens and 16 chalcogens and 17 halogens and

qaws [65]

Answer:

Boron family.

Explanation:

Group 13 is called boron family.

It consist of five members boron, aluminum, gallium, indium and thallium.

Boron is semi metal while other members are metals.

Boron hydrates are used to make organic compounds.

Al is soft metal and aluminum oxides are widely used as thermal insulator.

Aluminum sulfate is also very important commercial compound used in sizing paper.

Gallium is also very important element of this group. It form gallium arsenide which is used to convert the light into electricity.

Indium is malleable soft metal which is used in optical instruments.

Thallium is highly toxic and for the long period of time it as used as insect killing poison.

3 0

3 years ago

What kind of adaptation are the ears on a rabbit

Jet001 [13]

Answer:

Structural

Explanation:

Structural adaptions are the physical features of an organism that enable them to survive in their environment.

The rabbit’s long ears are an essential survival tool. They help the rabbit listen to the faint sounds made by nearby predators and their shape helps to detect sound direction accurately.

Also, if the rabbit lives in a hot desert, the large ears radiate heat, allowing it to control its temperature.

8 0

3 years ago

A gas cylinder contains exactly 1 mole of oxygen gas (O2). How many molecules of oxygen are in the cylinder?.

Svet_ta [14]

Answer:

4. 01 × 1022 molecules 6. 02 × 1023 molecules 9. 03 × 1024 molecules 2. 89 × 1026 molecules.

Explanation:A gas cylinder contains exactly 1 mole of oxygen gas (O2). How many molecules of oxygen are in the cylinder?

4 0

2 years ago

What is the relationship between the number of carbon atoms in hydrocarbon at its boiling point ?

saveliy_v [14]

If no of carbon atoms be C
Boiling point of compound be BP

$\\ \tt\longmapsto C\propto BP$

No of carbon atoms is directly proportional to the boiling point of the compound.
If no of carbon atoms increases in a hydrocarbon the length of carbon chain also increases and all carbons get wrapped around themselves.
Which causes increase in boiling point of compound.

Look the table below for the boiling points of some alkanes

$\boxed{\begin{array}{c|c}\boxed{\bf Alkane}&\boxed{\bf Boiling point}\\ \sf CH_4&\sf -164°C \\ \sf C_2H_6 &\sf -88.6°C \\ \sf C_3H_8&\sf 42.1°C \\ \sf C_4H_{10} &\sf -0.5°C \\ \sf C_5H_{12} &\sf 36.1°C \\ \sf C_6H_{14} &\sf 68.9°C \\ \sf C_7H_{16} &\sf 98.4°C \\ \sf C_8H_{18} &\sf 125.7°C \\ \sf C_9H_{20} &\sf 150.4°C \\ \sf C_{10}H_{22} &\sf 150.7°C \end{array}}$

8 0

2 years ago

Semi-conductors have properties of both metals and non metals.which are two examples of metalloids

balu736 [363]

The six metalloids are boron, silicon, germanium, arsenic, antimony, and tellerium.

7 0

3 years ago