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Author Question: Pure isooctane would have an octane rating of A) 0. B) 50. C) 75. D) ... (Read 101 times)

casperchen82

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  • Posts: 540
on: Aug 27, 2018
Pure isooctane would have an octane rating of
 
  A) 0.
  B) 50.
  C) 75.
  D) 100.

Question 2

After five half-lives, what percentage of the original radioactive isotope remains in a sample?
 
  A) 0
  B) 50
  C) 3.13
  D) 6.25


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mcinincha279

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Reply #1 on: Aug 27, 2018
Answer to Question 1

D

Answer to Question 2

C


casperchen82

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  • Posts: 540
Reply 2 on: Aug 27, 2018
YES! Correct, THANKS for helping me on my review

amcvicar

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  • Posts: 341
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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