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Keith_Richards [23]
2 years ago
7

What happens when the threat of exposure to dirty air is reduced in a community?

Chemistry
2 answers:
viktelen [127]2 years ago
6 0

There is enough oxygen available for people's lungs to function normally

Explanation:

When the threat of exposure to dirty air is reduced in a community is reduced there will be enough oxygen available for people's lungs to function normally.

The main problem with dirty air is the absence or lack of oxygen in the atmosphere for people to breathe in calmly and easily.

  • Air pollution is the introduction of harmful substance into the atmosphere.
  • These pollutants makes breathing very difficult because other gases are concentrated in the air.
  • when air is purified through the halt in the processes that feeds the pollutants in, there is enough available oxygen to breathe in.

learn more:

Point source pollution brainly.com/question/11271230

#learnwithBrainly

ss7ja [257]2 years ago
6 0

Answer:

A.

Explanation:

I just took the test.

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Which sample contains more atoms:<br> 3.89 g of nickel or 6.61 g of silver?<br> Defend your answer.
Alenkinab [10]
Nickel contains more atoms
3 0
2 years ago
At what temperature is water at its greatest density​
ahrayia [7]

Answer:

3.98^oC

Explanation:

We usually approximate the density of water to about 1000 kg/m^3 at room temperature. In terms of the precise density of water, this is not the case, however, as density is temperature-dependent.

The density of water decreases with an increase in temperature after the peak point of its density. The same trend might be spotted if the temperature of water is decreased from the peak point.

This peak point at which the density of water has the greatest value is usually approximated to about 4^oC. For your information, I'm attaching the graph illustrating the function of the density of water against temperature where you could clearly indicate the maximum point.

To a higher precision, the density of water has a maximum value at 3.98^oC, and the density at this point is exactly 1000 kg/m^3.

6 0
3 years ago
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According to the pattern of carbon and hydrogen atoms in alkenes, if a molecule has three carbon atoms, how many hydrogen atoms
Gekata [30.6K]
 <span>6. 

Because the general formula for alkenes is CnH2n</span>
4 0
2 years ago
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Give the name and symbol of the prefixes used with SI units to indicate multiplication by the following exact quantites.
Bingel [31]

Answer:

A. Kilo , K, multiplication by 1000

B. Centi, c

C. Deci, d

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7 0
3 years ago
An artifact contains one-fourth as much carbon-14 as the atmosphere. how old is the artifact
Nikolay [14]
<h3><u>Answer;</u></h3>

= 11,460 years

<h3><u>Explanation;</u></h3>
  • <em><u>The half life of Carbon-14 is 5,730 years . Half life is the time taken by a radioactive material to decay by half of its original mass.  Therefore, it  would take a time of 5730 years for a sample of 100 g of carbon-14 to decay to 50 grams</u></em>

<em>The initial amount of carbon-14 in this case was 1 whole; thus; </em>

<em>1 → 1/2 →1/4</em>

<em>To contain 1/4 of the value, 2 half-lives have passed. </em>

<em>But, 1 half life = 5,730 years</em>

<em>Therefore; The artifact is is therefore: 2 x 5,730 </em>

<em>          = 11,460 years </em>

4 0
2 years ago
Read 2 more answers
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