How many milliliters of pure liquid methanol (CH3OH, MW = 32.04 g/mol) are needed to prepare 250.0 mL of an aqueous solution of 19.0 g/L methanol? The density of pure liquid methanol is 0.791 g/mL. Then, express the methanol concentration as a volume percent (% v/v).
How many milliliters of pure liquid methanol (CH3OH, MW = 32.04 g/mol) are needed to prepare...
If 50.0 g of CH3OH (MM = 32.04 g/mol) are dissolved in 500.0 mL of solvent, what is the concentration of CH3OH in the resulting solution? How many moles of CH3OH are there in 50.0 mL of 0.400 M CH3OH? How many mL of 0.300 M NaCI solution are required to produce 0.150 moles of NaCI?
The percent by mass of methanol (MM = 32.04 g/mol) in an aqueous solution is 22.3%. What is the molality of the methanol solution?
How many mL of glycerol (MW=92.1 g/mol, density 1.26 g/mL) must be used to prepare 250.0 mL of a 0.150 M glycerol solution? Answer: 2.74mL glycerol
A 5.0067 g sample of Na2CrO4 (MW = 161.97 g/mol) is dissolved in 250.0 mL of water. Assume the solution has a density of 1.00 g/mL. A 50.0 mL aliquot of the solution is then diluted to a final volume of 250.0 mL. What is the concentration of Na+ in the diluted solution in units of parts per million (ppm)?
You wish to prepare 100.0 mL of a 325.0 ppm w/v sodium (MW = 22.9897 g/mol) solution. How many grams of sodium dichromate dihydrate (Na2Cr2O7·2H2O, MW = 297.998 g/mol) are needed to prepare this solution? Assume the final solution has a density of 1.00 g/mL.
A 5.9957 g sample of Na, CrO, (MW = 161.97 g/mol) is dissolved in 1000.0 mL of water. Assume the solution has a density of 1.00 g/mL What is the concentration of Na* (MW = 22.9898 g/mol) in the solution in units of molarity (M)? concentration: М What is the concentration of Na+ in the solution in units of parts per thousand (ppt)? concentration: ppt A 50.0 mL aliquot of the solution is then diluted to a final volume of...
Question 15 of 20 Submit The percent by mass of methanol (MM 32.04 g/mol) in an aqueous solution is 22.3%. What is the molality of the methanol solution? 1 2 3 X 4 5 6 C 7 8 +- x 100 Tap here or pull up for additional resources
Methanol (CH3OH) is used as a fuel in race cars. Part A Write a balanced equation for the combustion of liquid methanol in air, assuming H2O(g) as a product. Express your answer as a chemical equation. Identify all of the phases in your answer. SubmitPrevious AnswersRequest Answer Incorrect; Try Again; 5 attempts remaining Part B Calculate the standard enthalpy change for the combustion of 1 mol of liquid methanol, assuming H2O(g) as a product. Express your answer using four significant...
4) 440 pnts) A solution is prepared by mixing some volume of methanol (MM = 32.04 g/mol, d=0.792 g/mL, p = 94.0 torr) and acetone (MM=58.07 g/mol, d=0.784 g/mL, Pº = 240. torr) at room temperature. Assuming that the volumes additive on mixing. a) What is the mole fraction of acetone and methanol in solution if the number of acetone and methanol gas molecules above the solution are equal to one another? Assume ideal solution behavior.
What is the concentration of a solution made by adding 247 mL of pure liquid soap (100.0% soap) to total volume of 2.67 L? Chemistry 2A Lab 13: Solution Calculations 12. What is the concentration of a solution made by adding 247 mL of pure liquid soap (100.0% soap) to total volume of 2.67 L? 13. Calculate the volume required of a 42.0% iodine solution to prepare 300.0 mL of a 23% iodine. 14. A patient is to receive 0.200...