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HACTEHA [7]
2 years ago
10

What can I do to improve my basic chemistry?​

Chemistry
2 answers:
Gekata [30.6K]2 years ago
6 0
Practice controlled experiments, read informational books, watch others, pay attention in chemistry class and listen to safety tips about certain chemicals

Hope this helps, here’s my uncle btw

LUCKY_DIMON [66]2 years ago
4 0

Answer:

read a lot and understand what you read

do practicals

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Which of the following is not a negative consequence of upward urban growth?
Anestetic [448]

Answer:

D. Waste management issues

Explanation:

Answer A: The five major types of pollution - water pollution, air pollution, land pollution, light pollution, noise pollution - have negative effects on the environment, on human health, and our planet as a whole.

Answer B: Urban Heat Island (UHI) is an urban area that is significantly warmer than its surrounding rural areas due to human activities. UHI decreases air quality.

Answer C: The increased use of surrounding land is the main cause of biodiversity loss.

Answer D: Any field of environmental management help people to solve pollution problems. So, D is the correct answer.

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Hope this answer can help you. Have a nice day!

8 0
2 years ago
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RSB [31]
The answer is the second choice.
5 0
2 years ago
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The following reaction plays a key role in the destruction of ozone In the atmosphere:
lys-0071 [83]

Answer:

19.91 J/K

Explanation:

The entropy is a measure of the randomness of the system, and it intends to increase in nature, thus for a spontaneous reaction ΔS > 0.

The entropy variation can be found by:

ΔS = ∑n*S° products - ∑n*S° reactants

Where n is the coefficient of the substance. The value of S° (standard molar entropy) can be found at a thermodynamic table.

S°, Cl(g) = 165.20 J/mol.K

S°, O3(g) = 238.93 J/mol.K

S°, O2(g) = 205.138 J/mol.K

So:

ΔS = (1*205.138 + 1*218.9) - (1*165.20 + 1*238.93)

ΔS = 19.91 J/K

6 0
3 years ago
25 Points Please Help ASAP!! View Attached Image!! Will Mark Brainliest If All Are Answered!!
KIM [24]

Answer:

Answers in explanation.

Explanation:

30. A (A chemical changes changes the chemical properties)

31. C (rusting is an example of a chemical change

32. B (A reaction requires energy, so some energy will be expelled)

33. B (Color change is an example of a chemical change)

34. A (The law of the conservation of mass: Mass and Energy cannot be created nor destroyed)

8 0
3 years ago
A student asked to convert measurements from liters to mililiters and from mililiters to liters. His answers are shown in bold i
LenaWriter [7]

Answer:   3.6 L = 3600

Explanation: 3.6 L = 360 mL has a mistake. He multiplied by 100 instead of 1000.

5 0
3 years ago
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