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A homogeneous solution is defined as a uniform mixture consisting of a single phase. With our vastly improved abilities to "see" smaller and smaller particles, down to the atomic level, present an argument for the proposition that all mixtures are heterogeneous. Present the argument that the ability to observe objects as small as an atom has no effect on the definitions of heterogeneous and homogeneous.
In the following experiment, a coffee-cup calorimeter containing 100. of is used. The initial temperature of the calorimeter is 23.0 . If 6.80 of is added to the calorimeter, what will be the final temperature of the solution in the calorimeter
What is the change in internal energy of the system, with the system regarded as the CD player alone? Assume that the battery does 500 kJ of work on the CD player, which then does the same amount of work on the surroundings.
If 100.0mL water of at 50.0C is added to 100.0 mL of water at 20.0C. What temperature would the mixture of water reach. Assume the system is perfectly sealed and no heat is lost to the calorimeter or to the outside environment
Calculate E, q, and w if 8.00 moles of CO2 (g) reacts with excess nitrogen gas according to the following reaction at 25°C and 1.00 atm:
Antimycin A blocks electron transport in Complex III of mitochondria. Could the addition of antimycin A to chloroplasts affect chloroplast ATP and/or NADPH synthesis. why or why not.
tetrafluorethylene c2f4 effuses at rate of 4.6x10-6 moles per hour. unknown gas effuses at rate of 6.5x10-6 moles per
The molecules CO2 and SCL2 are both of the general molecular type AB2, but one is polar and one is not. Which molecule is polar?
Which would have a higher energy of activation and why, nitration of 4-bromonitrobenzene or nitration of bromobenzene
osmium os is the densest element known density 22.57 gcm3. calculate the mass in pounds and in kilograms of an os
You extrapolate this "cooling curve" back to the time of addition and find that the "final temperature" after mixing is 35.6 °C. What is the heat capacity of the calorimeter cup
The mass of an Argon atom is more than that of a Helium atom. Does that mean that because of Argon has larger mass, it exerts a higher pressure on the walls of container than Helium at the same volume, molar density and temperature? Give explanati..
What mass of water (in g) would need to evaporate from your skin in order to dissipate 0.8 x 10 5 J of heat from your body?
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