4. Solve the following laboratory solution problems. Show your work. slome & A. A solution of 100% ethanol is diluted 1/10. What is the concentration of ethanol in the diluted solution? B. How would you mix 1 Liter of a 0.5 M NaCl solution given the following information? Sodium 11 Na 22.990 Chlorine 17 CI 35.453 C. stock solution of TE Buffer has a concentration of 50x. You need to make 3L of 1x TE buffer. Calculate the volume of 50x stock solution you will need to make your 1x buffer. How much water would be needed to complete the solution?

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4. Solve the following laboratory solution problems. Show your work. slende wolod.
A. (
A solution of 100% ethanol is diluted 1/10. What is the concentration of
ethanol in the diluted solution?
B.
low would you mix 1 Liter of a 0.5 M NaCl solution given the following
information?
Sodium
11
Na
22.990
Chlorine
17
CI
35.453
C.
A stock solution of TE Buffer has a concentration of 50x. You need to make
3L of 1x TE buffer. Calculate the volume of 50x stock solution you will need to make
your 1x buffer. How much water would be needed to complete the solution?
D.
You have a protocol that requires 30mL of 25% acetic acid, but only have
25mL of 35% acetic acid available. Can you do the protocol? If yes- how? If no- why
not?
E. (
A broth contains bacterial cells at a concentration of 105 cells/mL. You dilute
this broth by removing 1mL of it and adding 9mL of sterile medium. This gives you
Dilution Tube #1 of bacterial cells. You then remove 0.1mL from Dilution Tube #1 and
Transcribed Image Text:4. Solve the following laboratory solution problems. Show your work. slende wolod. A. ( A solution of 100% ethanol is diluted 1/10. What is the concentration of ethanol in the diluted solution? B. low would you mix 1 Liter of a 0.5 M NaCl solution given the following information? Sodium 11 Na 22.990 Chlorine 17 CI 35.453 C. A stock solution of TE Buffer has a concentration of 50x. You need to make 3L of 1x TE buffer. Calculate the volume of 50x stock solution you will need to make your 1x buffer. How much water would be needed to complete the solution? D. You have a protocol that requires 30mL of 25% acetic acid, but only have 25mL of 35% acetic acid available. Can you do the protocol? If yes- how? If no- why not? E. ( A broth contains bacterial cells at a concentration of 105 cells/mL. You dilute this broth by removing 1mL of it and adding 9mL of sterile medium. This gives you Dilution Tube #1 of bacterial cells. You then remove 0.1mL from Dilution Tube #1 and
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