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a) Cyclohexane has a freezing point of 6.50 and a of 20.0. Explain what is the freezing point of a solution made by dissolving 0.771 of biphenyl() in 25.0 of cyclohexane? State the temperature numerically in degrees Celsius.
b) Paradichlorobenzene is a component of mothballs. A solution of 2.00 in 22.5 of cyclohexane boils at 82.39. The boiling point of pure cyclohexane is 80.70. Compute for cyclohexane. Express the constant numerically in degrees Celsius per molal.
Which one of the following substrates is found in both gluconeogenesis and the citric acid cycle? Answer A. isocitrate B. pyruvate C. phosphoenolpyruvate D. oxaloacetate
The procedure instructs you to use a stir bar to mix the solution while adding NaOH. Descirbe any differences in the graph
If 50.0 ml of NaOH solution is required to react completely with 1.24 grams KHP, what is the molarity of the Naoh solution?
A sample of K2S contains 1.35 g of potassium. How many moles of potassium sulfide are present in the sample
Consider the reaction 2 Al2O3(s) → 4 Al(s) + 3 O2(g). ?H = +3339.6 kJ/mol What is ?H for the formation of one mole of Al2O3(s) from the elements
in a first order reaction with only one reagent the reaction was started with a concentration of reactant equal to
what mass in grams of adipic acid C4H8(COOH)2 will neutralize 28.2 ml of .188 M NaOH at the phenolphthalien endpoint? (adipic acid is diprotic)
A gas mixture of N2 and CO2 has a total pressure of 8.00 atm and contains 12.5 mol of gas. If the partial pressure of N2 is 3.69 atm, how many moles of CO2 are in the mixture
oxygen gas is collected overwater at a temperature of 10 c and a pressure of 1.02 atm. the volume of gas plus water
An extraction procedure specifies that an aqueous solution containing dissolved organic material be extracted twice with 10-mL portions of diethyl ether.
the amount of lactic acidhc3h5o3 produced in a sample ofmuscle tissue was analyzed by reaction with hydroxide
A solution was prepared by mixing 43.00 mL of 0.190 M HNO3 and 108.00 mL of 0.150 M HNO3. Calculate the molarity of the final solution of nitric acid.
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