Answer: 
Explanation:

Multiply by t on both sides.


Now divide by I to isolate t.


You forgot to add pictures ..
Colorimetric methods of analysis make use of Color changes in reagents to decipher the concentration of solutions.
Therefore, color completes the sentence
<h3>Colourimetric analysis</h3>
Generally, Colorimetric analysis is used to know the concentration of a chemical element in a solution while using colour indicators or reagents.
Therefore
Colorimetric methods of analysis are based on having a reagent that changes Color as a function of the concentration of the analyte.
Color
For more information on Compound
brainly.com/question/704297
<em>All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, adaptation, growth and development, homeostasis, energy processing, and evolution. When viewed together, these characteristics serve to define life.</em>
<em>Hey</em><em> </em><em>Mate</em><em>!</em><em> </em><em>!</em><em> </em><em>!</em><em> </em><em>I</em><em> </em><em>hope</em><em> </em><em>this</em><em> </em><em>was</em><em> </em><em>helpful</em><em> </em><em>if</em><em> </em><em>yes</em><em> </em><em>please</em><em> </em><em>mark</em><em> </em><em>me</em><em> </em><em>brainliest</em><em>. </em>