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A solution is made by mixing 46.0 mL of ethanol, C2H6O, and 54.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 °C?
How much heat is absorbed by 100 mL of a dilute solution of NH4NO3 as it changes its temperature from 22.4 degrees C
What is the concentration of the compound in the cuvet? What is the concentration of the compound in the 10-mL flask?
the pressure of the vapor in this experment when the flask was full of vapor was assumed to be equal to the pressure of the atmosphere in the laboratory. why is this assumption valid
The boiling temperature is found to be 157 C(760 torr) as the first small amount of distillate is collected. The standard vapor pressures of n-propylcyclohexane and n-propylbenezene are known to be 769 toor and 725 torr
Predict the products of the reaction between each of the following compounds and both chromic acid and PCC. a) 2-methyl-2-butanol
How many grams of dry NH4Cl need to be added to 2.10 L of a 0.500 M solution of ammonia, to prepare a buffer solution that has a pH of 9.00? Kb for ammonia is 1.8*10^-5.
Draw the following protein molecule, Need to draw the following molecule (using the lewis condensed line structure).
What is the heat change of a 25 g block of iron that starts at a temperature of 22 degrees C and increases to 79 degrees C?
Calculate the enrichment factor (i.e. the ratio of the diffussion rate of 235 UF6 to 238 UF6 for this method?
Consider a substance X with a Hvap = 20.3 kj/mol and Hfus = 9.0 kj/mol. The melting point, freezing point, and heat capacities of both the solid and the liquid X are identical to those of water
At 0°C, the volume coefficient of expansion of mercury is α = 18×10-5 K-1, and its coefficient of compressibility is β = 5.32×10-6 bar-1.
What is the mechanism for turning 1-bromotbutane when it reacts with KI and DMF into n-butyl acetate?
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