Please answer all questions correctly for good review!!!

1. Convert 25mg to (i) micrograms and (ii) nanograms. (2) 2. Convert 13 ng to (i) micrograms, (ii) milligrams, and (iii) grams (3) 3. Convert 45mL to (i) microliters and (ii) nanoliters. (2) 4. Convert 10nL to (i) microliters, (ii) milliliters, and (iii) liters (3) 5. Suppose you want to make 20mL of 10g/mL solution of sucrose. Calculate the amount of sucrose in g. (2) 6. You have 10mg of sucrose and you want to make 1ng/mL of its solution in water. Calculate the volume of water ( i.e. solution) you need. (2) 7. You are given a solution of 1.0ng/LL of DNA sample. You performed 10 -fold dilution 3 times. Draw a cartoon to show your dilution (could be similar to question 9) and calculate the final concentration of solution in pg/uL. (2) 8. A stock solution of DNA has an unknown 8. A stock solution of DNA has an unknown concentration. You took 10L of this solution and diluted to make 200L of solution B, and you again took 10L of solution B and diluted it to make 200 L of solution C. The concentration of solution C was found to be 2.5ng/mL. Calculate the concentrations of DNA in solution B as well as in the original stock solution. (2) 9. Use the following figure to calculate the number of CFU per mL in the water specimen. (2) 10. In the lab, you prepared 1mL of 1ng/mL of sucrose solution by serial dilution. Write the procedure in past passive tense. You can also show cartoons