Percent Solutions
Prepare a 500 mL of 10% bleach solution (v/v)
What is 50 mL?
What is the formula when solving stock solution type questions?
0.75 L = _______ mL
What is 750?
What is the purpose of creating a standard curve?
What is it allows you to determine the concentration of an unknown solution?
0.00340
Prepare a 50 mL of 1.5% agarose in buffer (w/v).
What is 0.75 g?
A technician needs to prepare 350 mL of 1X TAE using a 50X TAE stock solution. Calculate the volume in mL
What is 7 mL?
450 µg = _______ mg
A solution has an absorbance of 0.8 at a concentration of 0.3 M. What would the absorbance be if the concentration is tripled?
What is 2.4?
7000
What is 1?
A culture medium recipe calls for 2% glucose. If you are preparing 500 mL, how many grams of glucose are required?
What is 10g?
A technician needs to prepare a 500 mL of 0.25 M sucrose using a 1 M stock solution. Calculate the volume in mL.
What is 125 mL?
0.006 kg = _______ g
What is 6?
A protein solution has an absorbance of 1.2 at a concentration of 0.5 mg/mL. If the concentration is reduced to half, what will be the new absorbance?
What is 0.6?
1.000 × 10³
What is 4?
Determine the mass (in g) of NaOH that you would need to create 1000 mL of a 0.01M solution. (molar mass = 39.99 g/mol). Round to two decimal places.
What is 0.04?
What is the dilution factor if you add 250 uL of protease standard solution to 250 uL of buffer?
What is 2 or 1:2?
A lab protocol calls for 25 µL of plasmid DNA per sample. You have 12 samples. How many mL of plasmid DNA will you need in total?
What is 0.3 mL?
If a sample has an absorbance of 0.62 AU, using the formula below, what is the protein concentration (mg/mL)? **Round to 2 decimals
y= 2.1803x + 0.098.
What is 0.24 mg/mL?
The concentration of an enzyme solution is calculated as 0.0045678 M but should be reported with 3 significant figures. What should the final reported value be?
What is 0.00457 M?
A PCR reaction requires 0.2 mL of 50% glycerol solution in a 1 mL final reaction. What is the % of glycerol in the final reaction?
What is 10%?
A technician needs to prepare a 200 mL of 0.1µg/mL plasmid using a 10 mg/mL stock solution. Calculate the volume in mL
What is 0.002 mL?
Convert 5 mg/min to g/hr
What is 0.3 g/hr?
What is the protein concentration (mg/mL), using the formula below for a sample reading of 0.25? ** Round to 1 decimal point
y= 0.0014x + 0.0086
What is 172.4 mg/mL?
456.2 − 0.03
What is 456.2?