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Author Question: A metal complex absorbs light mainly at 420 nm. What is the color of the complex? A) green B) ... (Read 73 times)

Arii_bell

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on: Aug 27, 2018
A metal complex absorbs light mainly at 420 nm. What is the color of the complex?
 
  A) green
  B) yellow
  C) red
  D) orange
  E) purple

Question 2

210Pb has a half-life of 22.3 years and decays to produce 206Hg. If you start with 7.50 g of 210Pb, how many grams of 206Hg will you have after 17.5 years?
 
  A) 4.35
  B) 3.15
  C) 3.09
  D) 0.0600
  E) 1.71


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joewallace

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

B

Answer to Question 2

A


Arii_bell

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

dawsa925

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

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