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3 years ago

Which of the following is NOT classified as matter?

Chemistry

2 answers:

bearhunter [10]3 years ago

7 0

Light because the 3 matters are solids liquids and gases

anyanavicka [17]3 years ago

6 0

The answer should be D. Light

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3 years ago

Which of these compounds hast the highest melting point CCl4 CBr4 CH4 CF4 CI4

ikadub [295]

The compound CBr4 has the highest melting point of 91°C

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4 years ago

What is the main purpose of a scientific investigation

lilavasa [31]

Answer:

scientific investigation is the quest to find an answer to a question using scientific method.

Explanation:

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3 years ago

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What cells in living organisms are diploid

Pavlova-9 [17]

Question

what cells in living organisms are diploid?

Answer:

Most mammals are diploid organisms, which means they have two homologous copies of each chromosome in the cells. In humans, there are 46 chromosomes. In most diploid organisms, every cell except for gametes will be diploid and contain both sets of chromosomes.

Hope this helps!

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4 years ago

Two common methods to generate an aldehyde is by oxidation of an alcohol and through ozonolysis.

kotykmax [81]

Answer:

a. True.

Explanation:

Only primary and secondary alcohols can oxidise to give an aldehyde. But a weak oxidizing agent must be used to prevent formation of a carboxylic acid or ketone.

weak oxidizing agents: Chromyl chloride, silver/oxygen/500°C

take an example of ethanol:

 ${ \bf{CH _{3} CH_{2}OH \: \: \frac{Ag/O_{2} }{500 \degree C} > \: \:CH _{3} CHO}}$ 

 ${ \sf{CH _{3} CHO \: \: is \: ethanal}}$ 

By ozonolysis:

Here, reactants are Ozone gas, Carbon tetrachloride at a temperature (<20°C), ethanoic acid, zinc and water.

take an example of propanol:

if it undergoes ozonolysis, it gives ethanal and methanal.

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3 years ago

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