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Scrat [10]
3 years ago
9

PLEASE HELP!!! Which claim about the causes of air pollution and water pollution is true? A. the burning of fossil fuels causes

both air pollution and water pollution. B. the burning of fossil fuels causes air pollution, but only runoff of chemicals causes water pollution. C. The burning of fossil fuels causes air pollution, but only acid rain causes water pollution. D. the burning of fossil fuels causes neither air pollution nor water pollution
Chemistry
2 answers:
faust18 [17]3 years ago
6 0

Answer:

I think it's A

Explanation:

if u wrong I'm sorry cause the brain said A THE CORRECT ANSWER:)

BaLLatris [955]3 years ago
3 0

Answer:

the first one which is A

Explanation:

the burning of fossil fuels causes both air pollution and water pollution

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The atomic number is the same as the number of ________.
Zanzabum

Answer:

number of electrons

Explanation:

(happy to help)

5 0
3 years ago
Compared to a sample of helium at STP, the same sample of helium at a higher temperature and a lower pressure A) condenses to a
zhuklara [117]

Answer:

Option D is correct.

Explanation:

Compared to a sample of helium at STP, the same sample of helium at a higher temperature and a lower pressure because any gas at a higher temperature and a lower pressure will  behaves like  an ideal gas. for eg.

nitrogen at STP show its behavior as an ideal gas.

When pressure of a gas increased & temperature is decreased then the gas does not follow ideal gas law.

Therefore option D is correct.

4 0
3 years ago
Why is sucrose insoluble in dichloromethane?
Vika [28.1K]
Sucrose is insoluble in dichloromethane because dichloromethane is not a polar solvent.
Sucrose is soluble in water because the molecules of sucrose has the ability to react with the molecules of water and thereby forming hydrogen bond which enhance the dispersion of sucrose in the water. 
Sugar can not react in a similar way with dichloromethane because they do not possess chemical species that can react together to form bonds. Thus, sugar is a polar substance which can not dissolve in a non-polar solvent.
5 0
3 years ago
How many moles of carbon are in the sample?
mafiozo [28]

Answer:

12.01 grams per mole

Explanation:

theres no sample or example so if theres grams of Carbon, convert it to moles using 12.01g/mol

7 0
3 years ago
The pka of hco3 - (or pka2 of h2co3) is 10.33. what is the ph of a solution that has 0.1 m na2co3 and 1.0 m nahco3?
Margarita [4]

The given solution is a mixture of NaHCO_{3}and Na_{2}CO_{3}. It acts as a buffer as it is a combination of the weak acid HCO_{3}^{-}and it's conjugate base CO_{3}^{2-}.

[Acid] = [HCO_{3}^{-}]=1.0 M

[Base] =[CO_{3}^{2-}]=0.1 M

pH of the buffer solution can be calculated from Hendersen-Hasselbalch equation as below:

pH=pK_{a}+log\frac{[CO_{3}^{2-}]}{[HCO_{3}^{-}]}

pH=10.33+log\frac{0.1}{1.0}

pH = 10.33+(-1)

     = 9.33


4 0
3 years ago
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