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A sample of carbon dioxide (Cop,m = 37.11 J K-1 mol-1)of mass 1.50 g at 27°C is allowed to expand reversibly and adiabatically from 500 cm3 to 4.65 dm3. What is the work done by the gas?
In ploystyrene beaker , we mixed 30 mL of 0.1 M sodium acetate and 15 mL of 0.1 M hydrocloric acid. we measured the PH ( in PH meter ) it was 4.86 and then we added 5 mL of 0.1 M NaOH to this buffer.
What volume of gold would be equal in mass to a piece of copper with a volume of 140.0 mL? The density of gold is 19.3g/mL; the density of copper is 8.96 g/mL.
an ice cube tray holds 515 g water. if the water initially has a temperature of 21degc how many kilojoules of heat must
Suppose that, during an extraction, you lost track of which flask contained the aqueous layer. What could you do to determine which layer is which
What alkene product or products are produced by dehydration of the following alcohols? You must draw the structure of the reactant alcohol and the final product
An evaluation of R was performed, following the procedure described in this module. The barometric pressure was 736 torr, the temperature was 295k and volume of hydrogen gas collected was 35.6 mL. The calculated value of R was 82.1 mL atm K^-1 mol..
A proton in a linear accelerator has a de Broglie wavelength of 139 pm what is the speed of the proton?
a an aqueous methanol ch3oh solution has a mole fraction of 0.525 of methanol. what mass of water would be present in
Draw the structure of an eight-carbon alkene that would yield the following compound after treatment with ozone followed by dimethyl sulfide
A sample consisting of 0.50 moles of AB(s) was placed in a 10.0L reaction at 750 C. After equilibrium was reached, it was found that 5.0% of the AB had dissociated according to the reaction
Predict whether the following will result in an increase or decrease in entropy and justify your reasoning. Desalination of water
A student prepared a stock solution by dissolving 20.0 grams of KOH in enough water to make 150 mL of solution. SHe then took 15.0 mL of the stock solution and diluted it with enough water to make 65.0 mL of a final solution. What is the concentra..
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