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When a glass ware has a marked capacity of 100 mL, does it mean that it has to be filled to the brim? Why?
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- 1.87 A solution of ethanol in water has a volume of 54.2 mL and a mass of 49.6 g. what information would you need to look up and how would you determine the percentage of ethanol in this solution?Does it make a difference if you use a volumetric flask vs a beaker vs a graduated cylinder to make a solution?An aqueous solution of acetic acid is 45.00% acetic acid by mass and has a density =1.052g/mL. What is the molarity of this solution?
- How many mL of sodium chloride solution do you need to have 85.4 g? The density of the solution is 1.202 g/mL?A pharmacist received a prescription calling for 30 capsules, each to contain 1/200 grains of nitroglycerin. How many 0.4 mg of nitroglycerin tablets would supply the amount required? PLEASE SHOW YOUR COMPLETE SOLUTION & THE CANCELLATION OF THE UNITS OF MEASUREMENT. Thank youWhat is the density of a solution with a mass of 116.1 ± 0.2 g and a volume of 96.3 ± 0.4 mL?
- An aqueous stock solution is 85.0% H3PO4 by mass and its density is 1.69 g/mL. What volume of this solution is required to make 1.25 L of 2.55 mol/L H3PO4(aq)? Give your answer in millilitres, accurate to three significant figures. Enter the correct symbol for millilitres in the units box.Is the concentration of a solution an intensive or an extensive property?A liniment contains 15 % (v/v) of methyl salicylate. How many mL of the liniment can be made from 1 pint of methyl salicylate? Volume(ml) x %(expressed in decimal)= mL of active ingredients
- A student weighed a wet 10-mL graduated cylinder. The cylinder contained at least 0.5 mL of water when weighed. Next, the student added sodium chloride solution to the cylinder until the bottom of the meniscus read 5.0 mL. How will the 0.5 mL of water affect the calculated density of the sodium chloride solution? Justify your answer with an explanation.A student pipetted 10 mL of a sample solution into a 250 mL volumetric flask and diluted it to the mark with distilled water. The student then, pipetted 10 mL of this new solution into a 50.00 mL volumetric flask and diluted it to the mark with water. What is the dilution factor of the final solution? 25X 100X 125X 5X 50XA chemist must prepare 550.mL of 60.0mM aqueous potassium dichromate K2Cr2O7 working solution. He'll do this by pouring out some 0.403molL aqueous potassium dichromate stock solution into a graduated cylinder and diluting it with distilled water. Calculate volume in mL of potassium dichromate stock solution that the chemist should pour out. Be sure your answer has the correct number of significant digits.
