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The vapor pressure of mercury is 17.3 mm Hg at 200oC; its heat of vaporization is 59.4 kJ/mol. Determine the a) vapor pressure of mercury at 340oC b) normal boiling point of mercury
when 5.0g of an unknown substance is dissolved in 100.0g of water the freezing point of the solution decreases by 1.5
Provide the structures of testosterone and estrone. How many stereoisomers can exist for cortisone. Explain would these stereoisomers have identical biological activity
a graduated cylinder contains 129 of water. a 12.0 piece of iron density 7.86 and a 15.0 piece of lead are added.
List the basic solutions in order of increasing basicity. NH2OH, HNO2, C2H5NH2, NaNO2, and Ca(OH)2
Question 1: What does a net ionic equation represent? How is it different than a molecular equation?
how many mL of 1.00 M hydrochloric acid is needed to prepare a 100.0 mL solution of hydrochloric acid with pH = 5.0 that also contains 0.01667 M MgCl2?
Methanol undergoes combustion in oxygen to make Carbon Dioxide Gas & Liquid Water. Find Standard Enthalpy of Reaction?
whats the ph of a solution of 1000 mg of vitamin C (176.1 g/mol) in water (Ka = 8*10^5) diluted to 254 mL
An electron has an uncertainty in its position of 499 pm
Calculate the equilibrium concentrations of CO2, H2, and H2O at 800 K if only CO and H2O are present intially at concentrations of .119M?
how many grams of sodium ion na are in 2.50 g toothpaste. a toothpaste contains 0.24 by mass sodium fluoride used to
What do you predict would happen if the crucible were placed on the laboratory bench rather than in the desiccator while it cooled?
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