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A solution contains 8.88g of KBr in 500.0mL of solution and has an osmotic pressure of 6.97atm at 25 C.
Calculate the van't Hoff factor (i) for KBr at this concentration.
Both pieces are placed in a calorimeter whose heat capacity is negligible. What is the final temperature inside the calorimeter (c of copper = .387 J/gK)
95.0mL of rm H_2O is initially at room temperature (22.0rm{} ^{circ}C). A chilled steel rod at 2.0rm ^{circ}C is placed in the water. If the final temperature of the system is 21.4^{circ}C.
What is the animal's initial radiation exposure in curies? b. If all of the energy from the emitted alpha particles is absorbed by the animal's tissues, and if the energy of each emission is 7.77 x 10^-12 J
For a protein w/ a molar mass of 1x10 6 u, calculate the molar concentration required to obtain an osmotic pressure of 10 matm at 25 degrees C.
Is it possible for an atom to absorb a photon of red light and reemit a photon of violet light
Use the formula for ?G to find ?G for a reaction if ?G° = 7.27 kJ?/?mol, T = 282 K, R = 8.31 × 10?3 kJ?/?mol?•?K, and Q = 0.67. Also, tell whether the reaction will shift toward the products or reactants to reach equilibrium
the maximum velocity of the ejected electrons is 3.45 multiplied by 105 m/s. Calculate the binding energy of electrons to the magnesium surface.
Give the structure and names of five alkenes having the molecular formula C6H12 that produce hexane on catalytic hydrogenation.
How many milliliters of 0.20M NaOH do you need to neutralize 40.0 ml of 0.12M acetic acid?
A nugget of pure gold of 4.80 grams is absorbed 284 Joules of heat. if the initial temperature was twenty eight degree Celsius then what was the final temperature of the Au? The specific heat of gold = 0.129 J/(g·°C)?
Calculate the solubility product (Ksp) for barium fluoride if the concentration of the barium ion is 3.6 x 10-3 M and of the fluoride ion is 7.2 x 10-3 M.
A 0.10-mole quantity of CuSO4 is added to a liter of 1.0 M NH3 solution. What is the concentration of Cu2+ at equilibrium. [The formation constant for Cu(NH3)42+ is Kf = 5.0 x 1013.]
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