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bazaltina [42]
3 years ago
7

Conserving the quality of available water is a high priority world-wide. There are many countries where the water supply is reac

hing dangerous levels of contamination. For example, the longest river in China, the Yangtze, is less than 5 years from death if nothing changes. How could the loss of this river have a negative impact not only the environment in China but across the region? A) The pollution is high in organic material so it will make the area more fertile. B) The death of the organisms in this river will open up niches for other organisms to replace. C) Since the Yangtze empties into the Sea of Shanghai the pollution will travel and have effects on surrounding countries. D) The loss of such a river is so minor in the ecosystems of the area, the impact will be low and not a danger to surrounding areas.
Chemistry
1 answer:
levacccp [35]3 years ago
7 0
The answer is C.  Pollution won't just affect the area that it's in.  the waterways are connected in ways you may not think possible and it may cause issues for other people as well.
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A car with a mass of 1360 kg accelerate from 120 m/s 2 to 520 m / s in 8 seconds.what is the acceletation of the car
Keith_Richards [23]
The mass isnt relevant
520 - 120 = 400
400 / 8 = 50
50ms^-2
7 0
3 years ago
One and a half gallons of paint are used on refrigeration units which are then baked dry in a 275F oven for 2 hours. If the pain
brilliants [131]

Answer:

Hence the evaporation rate in pints per minute is 0.001583.

Explanation:

Now,

1.5 gallons of paint are used.

It has 5% solid, so total 95% of 1.5 gallon can evaporate(only the solvent part will evaporate).

95% of 1.5 gallon=(95/100)*1.5 = 1.425 gallons.

1gallon = 8 pints.

So 1.425 gallons=8*1.425 pints

=11.4 pints.

Evaporation requires 2 hours. That is 3600*2 seconds = 7200 seconds.

So evaporation rate= 11.4 pints/7200 seconds.

=0.001583 pints per second

4 0
3 years ago
Which pairing below does not correctly match the scientist with the contribution to the understanding of the atom? A. Proust and
Lyrx [107]
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5 0
3 years ago
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Which rules are violated in the following electronic configuration 1s2 2s3​
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There is no element in 2s3
5 0
3 years ago
A sample of metal has a mass of 5. 2 g and absorbs 20. 0 j of energy as it is heated from 30. 0°c to 40. 0°c. What is the identi
kiruha [24]

The identity of the metal is copper.

<h3>What is specific heat?</h3>

The amount of energy needed to raise the temperature of one gram of a substance by one degree Celsius.

Using the formula of specific heat

H = mcdT

Where, H = Heat absorbed

m = mass of the metal

c = specific heat capacity of the metal

dT = temperature change

Putting the values in the equation

20 J = 0.0052 Kg × c × ( 40.0°C - 30.0°C)

c = 20 J/0.0052 Kg × ( 40.0°C - 30.0°C)

c = 385 JKg-1°C-1

Thus, the metal is copper.

Learn more about specific heat

brainly.com/question/11297584

#SPJ4

6 0
2 years ago
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