Group 2, I reckon. They started off with 100 mL vegetable oil, and group 2 ended up with 10+ of that, they also had an increase in engine oil. It was supposed to decrease like all of the other groups, but instead it increased like none of the groups.
Answer: fewer areas have fertile soil reducing crop production
Explanation:
I j got it right
Answer:
b) By mixing weak base with its conjugate acid and then adjusting the pH with strong acid.
Explanation:
Hello,
In this case, considering that the buffer required a pH greater than 7 where the basic conditions are present, we need a weak base and its conjugate base in order to assure such pH greater than 7. Moreover, by using a strong acid, we can gently add it in order to decrease the pH up to 7.4 via a properly measured neutralization of the necessary moles of base up to a hydrogen concentration of 3.98x10⁻⁸ (pH). Therefore, answer is b) By mixing weak base with its conjugate acid and then adjusting the pH with strong acid.
Best regards.
I believe the answer is three
