The corect answers will be:
1) A
2) B
3) D
Hope this helped :)
The answer to this question is A
Better than i am and very precice
A. The Average Ecological footprint will need to decrease . 6-11-18
Answer:
4.34.
Explanation:
<em>∵ pH = pKa + log [salt]/[Acid]</em>
∴ pH = - log(Ka) + log [salt]/[Acid]
∴ pH = - log(6.8 x 10⁻⁵) + log(0.75)/(0.50)
<em>∴ pH = 4.167 + 0.176 = 4.343 ≅ 4.34.</em>
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