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Three 1.0- flasks, maintained at 308 , are connected to each other with stopcocks. Initially the stopcocks are closed. One of the flasks contains 2.0 of , the second 3.7 of , and the third, 0.10 of ethanol. The vapor pressure of at 308 is 42 and that of ethanol is 102 . The stopcocks are then opened and the contents mix freely.
Cheap soaps sometimes leave skin feeling/looking dry, and in some cases, raw and blistered. What might cause this effect
A freeway has 10,000 vehicles per hour passing a house 200 m away. Each car emits an average of 1.5 g/mi of NOx, and winds are blowing at 2 m/s across the freeway towards the house.
Consider the following balanced thermochemical equation for the decomposition of the mineral magnesite. MgCO3(s) ? MgO(s) + CO2(g) ?Hrxn = 117.3 kJ
Aluminum and oxygen react according to the following equation: 4 Al (s) + 3 O2 (g) → 2 Al2O3 (s) What mass of Al2O3, in grams, can be made by reacting 4.6 g Al with excess oxygen
Determine the molarity of a saturated aqueous solution of NaI formed as 25degree celsius assuming that the added NaI does not add significantly to the volume of the water?
Given a stock solution of a food dye having a concentration of 1.0 x 10-5 and an absorbance of 0.700. If a new solution is made by diluting exactly 10.0 mL of the solution with exactly 44.4 mL of distilled water, what should the absorbance of the ..
If you remove a piece of paper with a secret message written with lemon juice from a tincture iodine bath and let it dry, what will happen over a long period of time? Explain why?
There are two key concepts to keep in mind throughout the exercises: 1) What is the unit cell for each structure? 2) What are the coordination environments of the atoms involved?
identify the oxidizing agent in the reaction Mg+2HCl=H2+MgCl2, the generation of hydrogen gas in the laboratory.
What is ozone and how it works as a protective molecule for our environment? What are the effects of CFCs on the ozone layer.
For which substances would you predict the highest boiling point? Answer with explanations as to why?
A flask of Argon gas is connected to the left arm of a manometer. The Hg level is 76.1cm. The right arm of the manometer is open to the atmosphere and has a Hg level of 63.9cm. The atmospheric pressure of the lab is 0.679 bar. What is the pressure..
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