### Ch1 problem9

Posted:

**Sun Jul 09, 2017 12:22 am**Hello,

I was so closeee to getting this problem 100% right.

Can someone please walk me through how to do the last line, (with 2.5 nm given)

Also I did not know how to assign the activity to their respective wavelengths, how do we know which is which (especially since reading and suntan got very close numbers)

here's my work

https://drive.google.com/file/d/0B89MG7gM_cLfZ2FfdE5DZC1ub1k/view

thank you

I was so closeee to getting this problem 100% right.

Can someone please walk me through how to do the last line, (with 2.5 nm given)

Also I did not know how to assign the activity to their respective wavelengths, how do we know which is which (especially since reading and suntan got very close numbers)

here's my work

https://drive.google.com/file/d/0B89MG7gM_cLfZ2FfdE5DZC1ub1k/view

thank you