You need to make 150mls of a 70% ethanol solution of EtOH from a 95% solution. How would you do this?
You need to make 150mls of a 70% ethanol solution of EtOH from a 95% solution....
From a 95% ethanol (ETOH) stock solution, you need to make 250 mL of 70% ETOH. How much stock and how much RO water do you need to make this solution- Show your work.
3. Your instructor asks you to refill your spray bottle of 70% EtOH which holds 425 ml. You only have 95% EtOH available in the lab. How much 95% EtOH do you need? How much dH20? Show your calculations. C1V1 = C2V2
You require a solution containing 85 %v/v ethanol? You have 1350 mL of a 96 % v/v solution of ethanol. How many L of a 70 %v/v ethanol solution do you need to add to it to make the required 85 %v/v ethanol solution (2 decimal places)
How much of 95% ethanol must be mixed with 20% ethanol to make 1 pint of a 40% ethanol solution?
If given 1L of 90% EtOH, how would you prepare 250ml of 70% EtOH?
You are given a stock solution of ribosylated collagen. In order to complete your experiment, you will need four 1ml aliquots of ribosylated collagen in phosphate buffered saline (1M), each containing 67.5 ng/ml. The stock concentration is 10 ug/ml, What steps are required to achieve the required concentrations? During lab a classmate accidentally breaks an Erlenmeyer flask: a single shard causes a 50mm laceration between his elbow and wrist. You decide that the best way to keep the wound clean...
How many grams of ethanol, CH3CH2OH, would you dissolve in water to make 2.75 L of vodka (which is an aqueous solution that is 6.86 M ethanol)? Using the density of ethanol (0.789 g/mL), calculate the volumes of ethanol and water you need to make 2.75 L of vodka. Please show all work. Thank you!
How do I make 95% v/v ethanol that has a density of 0.7893 g/mL?
for the reaction: acetaminophen + (NaOH/EtOH note: etoh is ethanol) and butyl iodide ---------------> 4-butoxyacetanilide a) The first step in this reaction is to reflux acetaminophen in a NaOH/EtOH solution, followed by the addition of butyl iodide. What is the purpose of using the NaOH/EtOH solution? Would the SN2 reaction still occur if the first step was not completed? Why or why not? b) Upon completion of the reaction (before filtration), an additional 4.0 mL of 1.0 M NaOH/EtOH was...
PART A How many grams of ethanol, CH3CH2OH, should you dissolve in water to make 0.400 L of vodka (which is an aqueous solution that is 6.86 M ethanol)? Express your answer with the appropriate units. PART B Using the density of ethanol (0.789 g/mL), calculate the volume of ethanol you need to make 0.400 L of vodka. Express your answer with the appropriate units.