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Ivenika [448]
3 years ago
7

Useful:Harmful:2. Give an example of how Bacteria can be useful and harmful to man.​

Chemistry
1 answer:
kupik [55]3 years ago
5 0

Answer:

normal flora useful

Explanation:

protect the skin

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How can you prove that air is a matter ?
Likurg_2 [28]

Answer:

One way to prove that air is made of matter is to blow up a balloon. Before you add air into the balloon, it is empty and shapeless. When you puff air into it, the balloon expands, so you know it is filled with something—air is taking up space. You'll also notice that a balloon filled with air sinks to the ground.

Explanation:

6 0
3 years ago
The oxides of nitrogen are very important ingredients in determining urban air pollution. Name each of the following compounds.(
deff fn [24]

Answer:

(a) N₂O - Dinitrogen monoxide or Dinitrogen (I) oxide

(b) NO - Nitrogen monoxide or Nitrogen (II) oxide

(c) NO₂ - Nitrogen dioxide or Nitrogen (IV) oxide

(d) N₂O₅ - Dinitrogen pentoxide

(e) N₂O₄ - Dinitrogen tetraoxide.

Explanation:

To name each of the compounds,

(a) N2O; It is properly written as N₂O. N₂O is a colorless, sweet tasting gas also known as "laughing gas".

N₂O - Dinitrogen monoxide OR Dinitrogen (I) oxide.

(b) NO; NO is a colorless gas.

NO - Nitrogen monoxide OR Nitrogen (II) oxide.

(c) NO2; It is properly written as NO₂

NO₂ is a reddish-brown gas.

NO₂ - Nitrogen dioxide or Nitrogen (IV) oxide.

(d) N2O5; It is properly written as N₂O₅

N₂O₅ is a white solid.

N₂O₅ - Dinitrogen pentoxide.

(e) N2O4; It is properly written as N₂O₄;

N₂O₄ is a red-brown liquid with an unpleasant smell.

N₂O₄ - Dinitrogen tetraoxide.

6 0
4 years ago
which elements do geologists measure to determine the age of an organism’s remains check all that apply?
Marizza181 [45]
I think it’s Carbon-14 dating
3 0
4 years ago
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What negative impact did chemistry have on society through the production and use of cfcs
ycow [4]
Hazardous coolants in refrigeration  units where replaced;) hope it helped have a good day!

5 0
4 years ago
Which of the following methods separates a homogeneous solution by spinning the solution very fast?
Zolol [24]

Answer:

<em> The answer is </em><u><em>(D) Magnetism</em></u>

The methods separates a homogeneous solution by spinning the solution very fast is magnetism.

7 0
3 years ago
Read 2 more answers
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