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Limonene (MW 136) is a pleasant smelling liquid found in lemon and orange peels. The bp of limonene is 175, but it co-distills with water at 97.5. If the vapor pressure of water at 97.5 is 690 mm Hg, what percentage of the steam-distillate is limonene?
Which of the following are ways that catalysts can speed up reactions rates? You must check all answers that apply.
Hydrogen gas was collected by downward displacement of water. A volume of 0.600 L of gas was collected at 25.0 °C and 740.0 torr. What volume will the dry hydrogen occupy at STP? The vapor pressure of water is 21.2 torr at 25.0 °C.
You have measured the absorbance for a vitamin sample to be 1.2 at a wavelength of 264. Can you use this reading to determine the INITIAL CONCENTRATION of your vitamin sample?
In a purity check for industrial diamonds, a 10.25 carat diamond is heated to 74.21 oC and immersed in 26.05 g of water in a constant pressure calorimeter.
What is the animal's initial radiation exposure in curies? b. If all of the energy from the emitted alpha particles is absorbed by the animal's tissues, and if the energy of each emission is 7.77 x 10^-12 J
The density of a 0.438 solution of potassium chromate at 298 is 1.063 .Calculate the vapor pressure of water above the solution. The vapor pressure of pure water at this temperature is 0.0313.
a nitrogen molecule is confined in a cubic box of volume 1.00m3. assuming that the molecule has an energy equal to
How many moles of methanol are present in a 150.0 gram sample of methanol,CH3OH
In an experiment 1.550g of mercury oxide decomposed to give oxygen gas and 1.435g of liquid mercury. What is the empirical formula of mercury oxide
a student placed 17.0 g of glucose in a volumetric flask added enough water to dissolve the glucose by swirling then
Identify the group of elements that corresponds to each of the following generalized electron configurations and indicate the number of unpaired electrons for each
Which satisfy the octet rule and which do not? PS3, SO2, SO3, NO3-1, CO3-2, PCl5
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