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zaharov [31]
1 year ago
13

What is one disadvantage of using fossil fuels?

Chemistry
2 answers:
tatiyna1 year ago
7 0
Green house affects environment affected by killings
Elan Coil [88]1 year ago
3 0

Answer:

Fossil fuels contribute to greenhouse gases, which is one of their major disadvantages. The most harmful for the environment is coal because it has many more harmful combustion products than other fossil fuels.

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5. Calculate the decrease in temperature when 6.00 L at 20.0 °C is compressed to 4.00 L.
Kazeer [188]

Answer: 195.3 K

Explanation: Use Charles Law to get T2

Charles Law V1 / T1 = V2 / T2

Derive the equation to find T2

T2 = V2T1 / V1

Convert temperature into K

T1 = 20.0 °C + 273 = 293 K

Substitute the values:

4.00 L x 293 K / 6.00 L = 195. 3 K

5 0
3 years ago
Wood burns in the presence of oxygen in the air and produces fire. After all the wood is burned, the fire stops. What is the exc
worty [1.4K]

Answer:

oxygen

Explanation:any reaction with burning involves mixing oxygen

this is correct

hope this helps plzz mark me brainliest  

4 0
3 years ago
Mg(OH)2 + 2HNO3 → Mg(NO3)2 + 2H20
LenaWriter [7]

Answer:

A. 1350

You multiply 18.21HNO3* 1mol MgN2O6 * 148.30MgN2O6

Then divide it by the 2mol HNO3 to get 1350

3 0
3 years ago
Plz help me in this <br> Question (i) and (ii) and (iii)
gregori [183]

The answer is given below....

Hope it helps

7 0
3 years ago
Which of the following statements concerning double covalent bonds is correct?
Alina [70]

they involve tie sharing of 2 electrons pairs.

3 0
3 years ago
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