Calculate what is the molar mass of the solute
Pure benzene has a normal freezing point of 5.5°C. a solution containing 11.4g of a molecular substance dissolved in 150.0g of benzene (Kf=5.12°C/m) has a freezing point of 1.20°C. what is the molar mass of the solute?
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Gold forms a substitutional solid solution with silver. Compute the weight percent of gold that must be added to silver to yield an alloy that contains 5.5 × 1021 Au atoms per cubic centimeter.
What data would be required to determine the absolute entropy of O2 at STP? After the data is acquired what calculations would be necessary to get the result?
A student dissolve 1.00 gram of product in 50ml H2O. the di stribution coeffcient of the compound in ether and H2O is five. how much of the student's compound will be extract by one 60ml portion of ethe r?
For a steel furnace, silica refractories have corrosion rates of 2E-7 m/s at 1,345OC and 9E-7 m/s at 1,510OC. Calculate the activation energy for the corrosion of these silica refractories.
A man with a mass of 60 kg steps into powdery snow and sinks to his waist. The area of each man's feet is 250 centimeters squared. He put on skis, each of which has an area of 1800 centimeters squared. What pressure does each of his feet exert
Calculate the percentage of empty space in 1 mol of water at25 Celcius. Obtain the density. The volume of amolecule of water can be taken as the sum of the volume of the twohydrogen atoms and the oxygen atom.
If temperature and pressure remain constant, how does the volume of gas sample vary with the number of moles of gas present
Suppose 4.00 mol of an ideal gas undergoes a reversible isothermal expansion from volume V1 to volume V2 = 6V1 at temperature T = 430 K. Find (a) the work done by the gas and (b) the entropy change of the gas.
The energy for vacancy formation is 0.82 eV/atom, while the density and atomic weight for this metal are 6.94 g/cm3 and 93.07 g/mol, respectively.
What is the (a) upper-bound, and (b) lower-bound modulus of elasticity values (in GPa) for a composite that has a composition of 26 vol% of oxide particles.
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