This week, we'll explore two
topics in our lab. 

​1. how do I complete a serial dilution?







2. what is a spectrophotometer and how does this machine work? 








​

Bio 111 Lab 2 

Pre-lab questions:

What is a solution?

What is a solute?

What is a solvent?

If solution A is darker than Solution B, which is more concentrated?

What does it mean to say that one solution is more concentrated than another one?

Why is it necessary to draw a best-fit line to determine the concentration of the unknown solution?

What does a spectrophotometer do?

50mg of solute added to 200 ml of water
= solution with a % concentration = ___%

7mg of solute added to 100 ml of water
 =a solution with a % concentration = _____%

50mg of solute added to 500 ml of water
=a solution with a concentration = _____%

10mg of solute added to 200 ml of water = solution with a concentration = _____%

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