2 answers:
Answer:
I was just doing this quiz and got a 100% The answer is age of the earth!!!
Explanation:
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Your answer is D. 8
16 = 2^4
72 = 2^3*3^2
So you'll choose 2^3 = 8
A, They Lower The Activation Energy.
I would say is because of the Boron from O?
Answer:
look at the photo........................
Concentration - 3
Phase - 1
Catalyst - 4
Surface area - 2
