why there were two peak when i used Cr(NO3)3 as the sample for uv/vis spectrophotometry?

and the graph is absorption against vawelength, how to convert the graph to absorption against concentration?

This sounds like homework.

Tell us what have you done so far?

Tell us what you know about Cr(NO3)3?

Try manipulating the equation for the Beer-Lambert law, as far as concentration goes.

 

Getting two peaks in your spectrum? what was [math] \lambda [/math] for the two peaks?

this is my experiment on analytical chemistry..thanks for respons,i already asked my lecturer about the graph and i had drew the first graph, and on my way for the second graph.