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greend0719
30.07.2019 •
Chemistry
Which of the following activities will contribute most to changing climate and global warming? paddling a canoe, driving a car, skiing down a mountain, riding a bike
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Ответ:
Ответ:
driving a car
Driving a car will contribute most to changing climate and global warming due to the emission of particles and gases generated from incomplete combustion of fuel in the vehicle. These gases includes carbon dioxide, carbon monoxide, hydrogen sulfides these gases can contribute to the increase in the global temperatures. These can contribute to drastic fluctuations of the climates such as dry and hot climatic conditions.
Ответ:
s = 5.22x10⁻⁹ M
Explanation:
Let's write the equilibrium reaction for this compound:
Al(OH)₃ <> Al³⁺ + 3OH⁻ Ksp = 2x10⁻³²
To get the solubility, we need to write the equilibrium expression:
Ksp = [Al³⁺] [OH⁻]³
Al(OH)₃ does not contribute to the equilibrium expression, because is a solid compound. Now, according to this, we have the following:
Al(OH)₃ <> Al³⁺ + 3OH⁻
I. 0 0
E. s 3s
Replacing into the Ksp expression:
2x10⁻³² = (s) (3s)³
2x10⁻³² = s * 27s³
2x10⁻³² = 27s⁴
s = ⁴√2x10⁻³² / 27
s = 5.22x10⁻⁹ MThis would be the solubility of the compound.
Hope this helps