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what mass of sucrose should be combined with 501 g of water to make a solution with an osmotic pressure of 8.85 atm at 305 K? (assume density of solution is equal to the density of the solvent).
Serum taken from a patient being treated with lithium for manic-depressive illness was analyzed for lithium concentration. A reading of 276 units was obtained for the intensity of the 671 nm red emission line
Choose one of the following atmospheric issues: air pollution, global warming, ozone depletion, and acid deposition. Then, respond to the following,
describe the change in conductivity as the concentration of the NaCl solution was increased by the addition of NaCl drops
Enough of a monoprotic acid is dissolved in water to produce a 0.0142 M solution. The pH of the resulting solution is 2.51. Calculate the pKa for the acid
how many grams of MgCl2 are contained in 225mL of a 0.650 M solution
How many molecules of ice at 0 degrees celsius can be melted from the complete transfer of the heat involved when 25.6 Grams of nitrogen is reacted with 34.5 L Of hydrogen gas at STP.
The enthalpy of fusion of methanol (CH3OH) is 3.16 kJ/mol. How much heat would be absorbed or released upon freezing 25.6 grams of methanol?
Suppose that 0.680 mol IBr in a 2.50-L flask is allowed to reach equilibrium at 150.°C. What are the equilibrium concentrations of IBr, I2, and Br2? [Br2] ?? M [I2] ?? M [IBr] ?? M
What is the boiling point of a solution made using 773 g of sucrose, C12H22O11, in 0.275 kg of water,H2O?
A sample of ethanol (C2H5OH) has a mass of 38.6 g. How many carbon atoms does the sample contain?
A flask contains 0.180 of liquid bromine,. Determine the number of bromine molecules present in the flask.
Caffeine is made up of 49.5% C, 5.2% H, 16.5%O, and 28.9% N. A solution made up of 8.25g of caffeine and 100.0 of benzene (d=0.887g/ml) freezes at 3.03C. Pure benzene (kf=5.10 degrees C/m) freezes at 5.50C.
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