Chemistry, 15.12.2020 01:00 jcox626

Why are masks important?

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Answer from: lin550

Masks are important not only to keep you safe from the current pandemic but In labs to keep you safe from getting sick or inhaling any dangerous chemicals.

I hope this helped!

I would appreciate it if you gave me a Thanks and a brainliest (:

Answer from: avery8626

It acts as a filter to prevent as much germs, or chemicals/substances, as possible from entering your immune system through your breathing. This is whether you're in a lab or in a grocery store with a pandemic going around. Not only does it protect you but it also protects those around you by filtering any germs you may already have in your system and preventing them from passing on to another person. That is why you should always wear your mask over your mouth and your nose.

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Hope this helps. Have a great day. May it be filled with joy and happiness. Please, stay safe and wash your hands.

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.

Answer from: Quest

What are the choices?

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