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BISC 131- Lab Questions for Final with correct Answers

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BISC 131- Lab Questions for Final with correct Answers

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BISC 131- Lab Questions for Final with
correct Answers
How many milligrams of salt is 5.8 grams? - Answer -5,800 milligrams

What are grams a measurement of? - Answer -mass

Although you combined the water and salt together in a beaker, what piece of labware
did you use to accurately measure the amount of water? - Answer -graduated cylinder

Milliliters (mL) are a measurement of what? - Answer -volume

What many liters of water is 100 mL? - Answer -0.1 L

What is the unit for molarity? - Answer -M

Based on it optical density and the optical densities of your tubes with known
concentrations, the green dye solution of unknown concentration is likely between
what? - Answer -50% and 25%

How many grams of sodium chloride should you add to 100 mL of AlgaGro in order to
create a 500 mM sodium chloride solution? - Answer -2.922 g
*about 3.0 g

How many grams of Miracle-Gro should you add to 100 mL of AlgaGro in order to
create a 0.03% Miracle-Gro solution? - Answer -0.03 g

You need 100 mL of a 0.03% Miracle-Gro solution. You are supplied with a 0.3% stock
solution of Miracle-Gro. How much of this stock solution and how much AlgaGro should
you mix together in order to create 100 mL of a 0.03% Miracle-Gro solution? - Answer --
10 mL of miracle-gro
-90 mL of AlgaGro

What are some control variables in this experiment (name atleast 4)? (environmental
pollution lab) - Answer -1. amount of Ankistrodesmus to start
2. amount of time
3. total volume
4. amount of light

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