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Effectus [21]
3 years ago
14

Fossil fuels are considered useful to humans because they are

Chemistry
2 answers:
Verdich [7]3 years ago
8 0
Fossil fuels are considered useful to humans because they are made by natural process by the decomposition of buried dead organisms. Coal, crude, oil And natural gas are fossil fuels that are the currently energy sources of the world.
ad-work [718]3 years ago
3 0

Fossil fuels are important because these products create fuel, gasoline for cars, jet fuel, heating oil and natural gas used to generate electricity.

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If a gas’s [kelvin] temperature doubles and it’s volume then remains the same, then what happens to it’s pressure?
Tamiku [17]

Answer:

The final pressure will double i.e it will be twice the initial pressure

Explanation:

T1 = T

T2 = 2T ( twice the original T)

P1 = P

P2 =?

Since the volume is constant,

P1/ T1 = P2 /T2

P/ T = P2 / 2T

Cross multiply

T x P2 = 2T x P

Divide both side by T

P2 = (2T x P) / T

P2 = 2P

Therefore, the final pressure will double i.e it will be twice the initial pressure

5 0
3 years ago
Fill out the chart below with things about the lion and tarantula that make them predators. Think of at least one trait that the
aleksandr82 [10.1K]

Answer:

the lion and the tarantula are both carnivores

the lion and the tarantula both live in hot dry places

Explanation:

7 0
3 years ago
Read 2 more answers
Which of the above buffers (acetic acid, formic acid, boric acid, ascorbic acid, tris) would be useful if you wished to maintain
s344n2d4d5 [400]

Answer:

To maintain a pH value of 8.8 in a particular solution the best option is Tris or boric acid.

Explanation:

To decide a good acid/conjugate base pair it is necessary to know the pKa of the acids because every buffer has an optimal effective range due to pH = pKa ± 1. The closer the working pH is to the acid pKa, the buffer will be more effective. Below is the list of the pKa of the different option.

Acetic acid: pKa = 4.76

Boric acid: pKa1 = 9.24 pKa2 = 12.74 pKa3 = 13.80

Ascorbic acid: pKa1 = 4.17 pKa2 = 11.57

Tris:  pKa = 8.06

Acetic and Ascorbic acid are too far from the range of 8.8. Thus the best options are boric acid or Tris. To define between these two it is necessary to consider other factors like interaction between components of the solution and the ionic strength required.

4 0
3 years ago
How many atoms in Alka-Seltzer
Salsk061 [2.6K]
Hope this helps solve your problem!

4 0
3 years ago
Read 2 more answers
Please hurry!!! And help!!
Pepsi [2]

Answer:

Molecule

Explanation:

N=N

4 0
3 years ago
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