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The freezing point for t-butanol is 25.50 degrees C and kf is 9.1 degrees C/m. Usually t-butanol absorbs water on exposure to the air. If the freezing point of a 10.0 g sample of t-butanol is measur
Common sugar or sucrose is a nonvolatile substance of formula C12H22O11. Two teaspoons of sugar in a cup of coffee correspond roughly to 10 g of sugar dissolved in 200 g of water. What is the MOLE F
calculate the molecular weight of phosphorus if 2.3437 grams are dissolved in 50.00 grams of para-dibromobenzene and the solution freezes at 81.35 degrees C. What is the molecular formula for phosph
Calculate the freezing point of a solution of 23.4 grams of benzoic acid (C6H5CO2H) dissolved in 613 grams of naphthalene.
When lithium iodide is dissolved in water the solution becomes hotter. Why does the solution form? What drives the process
based on the experament of bromination of acetinilde how many equivalents of CAN of 0.00555 moles relative to acetanilide moles of 0.00381 show your calculation
how many equivalents of KBr moles of 0.00416 relative to acetanilide moles of 0.00381 are used in this reaction
the students product is contaminated with 5% o a constitutional isomer. give the approximate expected melting point of the students product
The brominated product of acetanilide is disubstituted aromatic ring( 2 groups on the benzoering)draw any constitutional isomer that has a monosubtituted aromatic ring and the compound should not ha
An aqueous solution of hydroiodic acid is standardized by titration with a 0.182 M solution of barium hydroxide. If 17.7 mL of base are required to neutralize 21.9 mL of the acid, what is the molari
Calculate the initial molarity of Ba(OH)2 and the molarities of Ba2+, OH -, and H3O+ in an aqueous solution that contains 0.70 g of Ba(OH)2 in 0.173 L of solution.
Describe the procedure for conducting a melting point experiment. Include the names of the equipment used and the observations you could expect to make.
You and your lab partner take melting points of the same sample. You observe a melting point of 101-107°C, while your partner observes a value of 110-112°C. Explain how you can get two diffe
The melting point of a pure compound is known to be 110-111°. Describe the melting behavior expected if this compound is contaminated with 5% of an impurity.
Suppose that the observed melting point range of a solid was originally 150-160 °C, but this became 145-145.5 °C after recrystallization. How might you account for this observation
Write the reaction under study and explain why menthone is a good target molecule of the peppermint oil.
A solution is prepared by adding 0.1M acetic acid and 0.01 M ethylamine to water and adjusting the pH to 7.4. What is the ratio of acetate to acetic acid. WHat is the ratio of ethylamine to ethylamm
estimate the minimum uncertainty in the position of an electron of mass 9.109*10^-31 kg if the error in its speed is 3*10^5 m/s
Some athletes have as little as 3.00 body fat. If such a person has a body mass of 45.0 , how many of body fat does that person have
If you have a beaker of gas and all of the gas in that beaker is moved to a container half the size, the temp is maintained, what would the gas look like
calculate the total length obtained when you add 12.3cm, 2.75dm, and 0.450m. give the answer in centimeters
AS you get to the mountains the temp drops to -1C and 0.70 atm. If the volume of air in the tires is 12L when you left the city, what will it be in the mountains
If a temperature of a gas at 1.00atm and 8.00C is increased, resulting in a change of pressure, which equation would you use to calculate the new pressure.
if a container can hold 2.0 gallons and 5.0 liters of water are added, how many more liters of water can be added to completely fill the 2.o gallon container? [ 1 gallon = 4 qts]
A 500 mL graduated cylinder contains 295 mL of alcohol. if15 cL of water are added to the cylinder, what is the final volume of the solution in liters