Metric Mastery
Convert 2500 µL to mL.
What is 2.5 mL?
How many grams of NaCl are needed to make a 5% (w/v) solution in 20 mL of water?
What is 1.0 g?
Define molarity in words. Think about the equation!
What is moles of solute per liter of solution?
Write the dilution formula!
What is C₁V₁ = C₂V₂?
Multiply 2.8 × 3.4 (use correct sig figs).
What is 9.5?
Express 0.000059 in scientific notation.
What is 5.9× 10⁻⁵?
How many grams of agarose are needed for 60 mL of a 1.8% (w/v) gel?
What is 1.1 g?
What is the molarity of a solution made by dissolving 0.25 mol of glucose in 500 mL of water?
What is 0.50 M?
You have a 10X buffer and need 200 mL of 1X buffer. How much stock is required?
What is 20 mL?
A technician dilutes 2 mL of a bacterial culture into 18 mL of sterile broth. What is the dilution factor?
What is 10? or 1:10?
Add 2.54 + 0.6 + 3.871 using correct sig figs.
What is 7.0?
How many grams of sugar are needed to prepare 150 mL of a 3% (w/v) solution?
What is 4.5 g?
How many moles are in 250 mL of a 3 M solution?
What is 0.75 mol?
How much 3 M HCl stock is needed to make 100 mL of 0.5 M HCl?
What is 16.7 mL?
If the pH of a solution changes from 6 to 3, how much more acidic is it?
What is 1000x more acidic?
Convert 0.0825 L to µL.
What is 82,500 µL?
You need to prepare 150 mL of a 35% (v/v) isopropanol solution using pure (100%) isopropanol. How many milliliters of isopropanol and how much water do you need?
What is 52.5 mL isopropanol and 97.5 mL of water?
How many grams of NaOH (MW = 40 g/mol) are needed to make 250 mL of 2.0 M solution?
What is 20.0 g?
A solution is diluted 1:4, and then that solution is diluted 1:5 again. What is the total dilution factor?
What is 1:20?
A technician measures these absorbances for known standards: 0.1M = 10 units, 0.3M = 30 units, 0.5M = 50 units. What is the concentration for 36 units?
What is 0.36 M?
Multiply (6.0 × 10³) × (7.5 × 10²) and write in scientific notation.
What is 4.5 × 10⁶?
To make 250 mL of 8% (v/v) ethanol solution, how much pure ethanol is required?
What is 20 mL?
You dissolve 5.0 g of KCl (MW = 74.55) in 300 mL of water. What is the molarity?
What is 0.224 M?
A 4.0 M solution is serially diluted three times 1:2. What is the final concentration?
What is 0.5M?
You need to make 400 mL of 70% ethanol from 95% stock. How much 95% ethanol should you use?
What is 295 mL of 95% ethanol and 105 mL of water?