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A dilute electrolyte is prepared by dissolving iron(III) chloride in water. It is found to ave a freezing point of - 2.5C. Calculate the molality of the solution
What are the advantages and disadvantages of animal studies and epidemiological studies for establishing dose-response relationships?
Draw the structures of each of the following compounds. Determine the number of chirality centers, indicating them in each structures. Also calculate the number of possible stereoisomers for the compound.
use the concept mof electron configuration to explain why the number of valence electrons in metals tend to be less the number in most nonmetals.
Write an equation for the dissociation that occurs when NaCl is mixed with water. Calculate the effective molality for the NaCl mixture. 120 g of salt and 600 g of H2O
What is the pressure at a closed faucet on the second floor, 5 m above where the water enters the house. (b) How high could a faucet be placed before no water will come out of it
The enthalpy change for the reaction of 50.0ml of ethylene with 50.0ml of H2 at 1.5atm pressure (problem ^H= -0.31kj. What is the value of ^E
the signs of the unsquared wave functions are usually shown in plots of the squared functions. why is this so
What volume of hydrogen gas, in liters, is produced by the reaction of 4.17g of iron metal with 60.0 mL of 3.00M HCl?
a solution consisting of isobutyl bromide and isobutyl chloride is found to have a refractive index of 1.3931 at 20 degrees celsius. The refractive indices at 20 degrees celsius of isobutyl bromide and isobutyl chloride
what is the change in temperature of the water after the ice has completely melted? The enthalpy of fusion of water is 6.02 kJ/mol, and the specific heat capacity of the liquid is 4.184 J/g/K. Assume that the amount of extra water produced by the ..
A vapor composed of 0.20 mole fraction ethanol and 0.80 mole fraction acetic acid at 120.0 mmHg (absolute), is in equilibrium with a liquid phase also composed of ethanol and acetic acid.
Carbon-14 has a half-life of 5730 years. A sample of carbon with a mass of 0.120 g has an activity of 40 decays/hr. The initial specific activity is assumed to have been 900 decays/hr/gram.
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