Aamc 7 #28

[mangos3]

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Can anyone explain this question in the PS section to me? Maybe I'm just stupid, but I don't understand how they came up with that number as the answer (the solution key I looked at was incomprehensible for this question).

Thanks!

 

[GujuMD]

Use the equation- A=ecl
e= 198
c=4.14X10^-3
l=1
work that out and you get 0.820

 

[mangos3]

That's the answer I had. But my answer key said the answer was C?? Is this the wrong? That's why I was so confused...

I think there may be mistakes on the answer key that I have. I also got the answer B on #166 in BS, but the answer key said the answer was D. Am I right to suspect that this is wrong also?

 

[mangos3]

i think i figured out what the problem is.

it appears that I have the test for AAMC 7, but the answer key for AAMC 7R. That would explain why some of the answers don't match up and why there are "incomprehensible explanations" since some questions don't correlate and therefore are explaining something totally different.

Does anyone have they key for 7? That would probably be helpful.