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A very flexible helium-filled balloon is released from the ground into the air at 20 degree celsius. The initial volume of the balloon is 5.00 L, and the pressure is 760 mmHg. The balloon ascends to an altitude of 20 km, where the pressure is 76.0 mmHg and the temperature is -50 degrees celsius. What is the new volume,V2 , of the balloon in liters, assuming it doesn't break or leak?
Calculate the concentrations of all species in a 1.01 M Na2SO3 (sodium sulfite) solution
Write the defining expression for the conditional solubility product constant, Ksp'. Than For the Ca2+ and F- ions, write the mathematical relations defining activity of each ion in terms of its concentration and activity coefficient.
A green leaf has a surface area of 2.00 cm^2. If solar radiation is 1030 W/m^2, how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 nm for solar radiation.
The relationship of [A]t / [A]o = 0.50^n, where n=number of half lives. n = I understand that the linear plot of 1/[C4H6] means second order.. but i do not understand how to calculate the half life from this information for part b.
10.0 grams of sodium bicarbonate reacts with 50.0 mL of 2 M acetic acid, what is the limiting reactant? what reactant is in excess, and by how much? what volumeof carbon dioxide gas would form?
if I have .42N NaOH and the stoiometry between Oxalic acid and Naoh is 1:2 then does that mean i do .42/.5=mol Oxalic acid * vol of titrations = molarity of oxalic acid
calculate the number of grams of xenon in 3.940 g of the compound xenon tetrafluoride. In grams please.
a car radiator coolant, loses 999J of heat. What was the initial temperature of the ethylene glycol if the final temp is 32.5 degrees C
Saturated aqueous sodium chloride(d=1.2g/mL) is added to the following mixtures in order to dry the organic layer. Which layer is likely to be on the bottom in each case?
Determine the phase composition and temperature when equilibrium is reestablished?
If the density of sulfuric acid is 1.05 g/ml in the original 1 L solution, then find the weight percent of sulfuric acid in solution.
What pH is needed to precipitate Ni(OH)2 so completely that the nickel concentration is less than 1.1 x 10-5 M (Ksp = 1.6 x 10-14)
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