Chemistry, 28.08.2020 03:01 aklilrodowx1q5

Which of the answer choices provides an accurate example of how knowledge of nuclear reactions has been used to benefit society select all that apply.

1.Radiation in correct doses may be able to prevent and treat illnesses caused by viruses, such as HIV and influenza.

2. Nuclear fusion can be easily activated and controlled in nuclear power plants and harnessed to generate clean electricity.

3. Controlled fission chain reactions can be used to produce electricity in a nuclear-powered submarine.

4.Medical imaging devices use radioactive elements with short half-lives to see through the human body and diagnose patients.

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Answer from: daltondespain2

Controlled fission chain reactions can be used to produce electricity in a nuclear-powered submarine.

4.Medical imaging devices use radioactive elements with short half-lives to see through the human body and diagnose patients

Explanation:

A submarine uses nuclear vision as a source of energy. The heat from controlled nuclear fission reactions produces steam which drives a steam turbine to power the submarine.

In the area of medicine, medical imaging is becoming a popular technique for diagnosis of many illnesses. These radioactive elements with short half lives are used to see through the human body for the purpose of diagnosis.

Answer from: Quest

it can be icreased by increasing pressure.

Answer from: Quest

answer: - 3.) the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

solution: - as per the rules, oxidation number of oxygen in its compounds is -2. the sum of oxidation numbers of all the elements of a molecule or compound is zero.

also, the oxidation number in elemental form is zero.

in no, the oxidation number of o is -2 so the oxidation number of n is +2 so that the sum is zero.

similarly, the oxidation number of c in co is +2 and o is -2.

on product side the oxidation number of n is 0 as it is in the elemental form( $n_2$ ) .

oxidation number of c in carbon dioxide is +4 as there are two oxygen in it and we know that each oxygen is -2.

so, oxidation number of n is changing from +2 to 0 and the oxidation number of c is changing from +2 to +4.

since nitrogen is reduced and hence no is acting as an oxidizing agent. carbon is oxidized and so co is acting as a reducing agent.

so, the right choice is number 3.)the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

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