of Earth?
Chemistry, 23.04.2020 01:32 naiomireyes74p2aybs
Starting billions of years ago, in what way did algae change the atmosphere
of Earth?
A. Oxygen was converted to ozone.
O
B. Nitrogen was converted to oxygen.
O
C. Carbon dioxide was converted to oxygen.
O
D. Methane was converted to oxygen.
Answers: 3
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When water dissolves sugar, which process is not involved? o dissociation o hydration o surface area of the solute increases sa
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Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.
Answers: 3
Chemistry, 23.06.2019 06:00
What physical property of gold makes panning a useful way to get gold from streams?
Answers: 2
Starting billions of years ago, in what way did algae change the atmosphere
of Earth?
of Earth?
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