How much of 95% ethanol must be mixed with 20% ethanol to make 1 pint of a 40% ethanol solution?
How much of 95% ethanol must be mixed with 20% ethanol to make 1 pint of...
How many ml of 95% alcohol should be mixed with 30% alcohol to make 23 fluid ounces of a 40% 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.
You need to make 150mls of a 70% ethanol solution of EtOH from a 95% solution. How would you do this?
1) How much water must be added to 400. mL of 0.400 M ethanol solution to create a 0.0400 M solution? 2) Which solution will have the highest concentration of ions? a) 0.100 M NH4Cl b) 0.100 M K2SO4 c) 0.100 M glucose d) 0.100 M Na3PO4 e) They all have equal concentration
The density of ethanol is 0.789 g/mL. How many grams of ethanol should be mixed with 225 mL of water to make a 4.5% (v/v) mixture?
How much alcohol USP (95% ethanol) should be added to preparation to preserve the following prescription? Rx Active drug 5ml volume occupied Drug solids 3 ml volume occupied Glycerin 15 ml Sucrose 25g Ethanol 95% q.s. Purified water q.s. 100 ml
2. How many ounces of a 15% acid solution must be mixed with 5 gal. of a 20% acid solution to make a 16% acid solution?
How do I make 95% v/v ethanol that has a density of 0.7893 g/mL?
Dilution- 1 a) A 4 N NaOH solution was mixed with an equal volume of a 10 N NaOH. What is the concentration of NaOH in the mixture? b) Which contains more alcohol : a 1/6 dilution of 30% ethanol or a 0.08 dilution of 60% ethanol? C) You have a 0.3ml of a vitamin solution. How many ml of a 1/20 dilution will this make? Could you use the resulting 1/20 dilution to make a 1/100 dilution ? D)...
A radiator has 11 L of a 20% antifreeze solution. How much must be drained and replaced by pure antifreeze to bring the concentration level up to 40%? L of the 20% should be drained and replaced by pure antifreeze.