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Compute the change in internal energy of the following system a balloon is cooled by removing 0.652 kJ of heat. It shrinks on cooling as well as the atmosphere does 385 J of work on the balloon.
A mixture of 1.10 g H2 and 1.51 g He is placed in a 1.00 L container at 25°C. Calculate the partial pressure of each gas and the total pressure of PHe.
find the concentration of calcium ions in a solution made by adding 3.50 g of calcium fluoride to 750ml of .125M NaF. Ksp for CaF2 is 3.95x10^-11
I understand that benzyl bromide does react in an Sn1 reaction because the carbocation is stabilized by resonance..but what does the product look like
what is the purpose of a buffer system? b)what is the purpose of NaNO2 in the buffer? c)how does the buffer react when some H3O^+ is added? d)how does the buffer react when some OH^- is added?
What is the maximum mass of aluminum chloride that can be formed when reacting 11.0 of aluminum with 16.0 of chlorine
Create an original diagram or series of simple diagrams- Label the primary, secondary, tertiary, and quaternary structures in your diagrams.
How many moles of CO(NH2)2 are present in 150 g of water, if the freezing point of the solution is -4.02C? kf(water) = 1.86 K · kg/mol.
The concentration of CO2 in a soft drink bottled with a partial pressure of CO2 of 6.5 atm over the liquid at 29°C is 2.2 × 10-1 M. Determine the Henry's law constant for CO2 at this temperature.
A 15.00 mL sample of HCL solution of unknown concentration was titrated with .185 M Ca(oh)2 (aq). It took 23.9 mL of the base to reach the equivalence point of the titration.
a nonelectrolyte of 558.9 grams are fully dissolved in sufficient h2o to produce an aqueous solution of 2.50 litres at
at 298 k a cell reaction has a standard emf of 0.17 v. the equilibrium constant for the cell reaction is 5.5 105. what
the second line of the balmer series occurs at a wavelength of 486.13 nm. what is the energy difference between the
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