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2 years ago

What are compounds?

Chemistry

1 answer:

Fed [463]2 years ago

3 0

Answer:

a thing that is composed of two or more separate elements; a mixture.

Explanation:

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Which does not contain a lens?

CaHeK987 [17]

I think B or D because an eye obviously doesn't have a lense, mirror..maybe sorry for not giving u straight forward response

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11C. Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory to standardize strong base solut

Llana [10]

For the reactants,

The oxidation number of hydrogen = +1
The oxidation number of oxygen = -2
The oxidation number of arsenic = +5
The oxidation number of carbon = +3

For the products,

The oxidation number of hydrogen = +1
The oxidation number of oxygen = -2
The oxidation number of arsenic = +3
The oxidation number of carbon = +4

Here, arsenic (+5 to +3) and carbon (+3 to +4) are the only oxidation numbers changing.

Note that an increase in oxidation number means electrons are lost. Thus oxidation is occurring, and a decrease in oxidation number means electrons are being gained, and thus reduction is occurring.

Also, the compound that contains the element being oxidized is the reducing agent, and the compound that contains the element being reduced is the oxidizing agent.

So, the answers are:

name of the element oxidized: Carbon

name of the element reduced: Arsenic

formula of the oxidizing agent: $\text{H}_{3}\text{AsO}_{4}$

formula of the reducing agent: $\text{H}_{2}\text{C}_{2}\text{O}_{4}$

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1 year ago

Why do people describe water as a universal solvent

NikAS [45]

The reason people describe water as a universal solvent is because it dissolves almost anything.

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2 years ago

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A physiologist is studying the homeostatic control of blood ph. What type of receptor might be responsible for detecting changes

sertanlavr [38]

Answer:

Chemoreceptors should be your answer :)

Explanation:

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Which one of the following classes of organic compound does not contain the carbonyl (C=O) group?A) aldehydesB) carboxylic acids

vredina [299]

Answer: alcohols

Explanation:

The carbonyl group refers to C=O. It is contained in aldehyde, Ketones, carboxylic acids , esters, amides and acyl chlorides. They are not found in alcohols. The alchols are generally ROH. They do not contain any carbon-oxygen unsaturated bond in their structure hence the answer.

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