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a solution of 0.95 g of a compound in 120 g of cyclohexane has a freezing point of 6.08 degree celsius. what are the molality of the solution and molar mass of the solute.
What fraction of collisions will have sufficient energy to react for a gas whose activation energy is 68 kJ/mol at 25C
How many days does it take to deposit the gold on one side of one earring if the current used is 0.024 A
consider the cell prepared with 2.0 m cd2 and 0.45 m zn2 solutionszns cd2aq --- zn2aq cdsa calculate the standard
Calculate the pH during the titration of 20.0 mL of 0.25 M HBr with 0.25 M KOH after 19.90 mL of the base have been added.
What is the deBroglie wavelength in meters of a 1-ton (907 kg) vehicle having a velocity
or the reaction H2(g)+CO2(g) H2O(g)+CO2(g) at 700C, Kc=.534. Calculate the number of moles of H2 that are present at equilibrium
Fertilizer is made ??by mixing equal masses of potassium nitrate (KNO3) and ammonium phosphate ((NH4)3PO4). What is the mass fraction of nitrogen in this formula
What effect does adding an enzyme to a reaction have on this? On delta G? What are the roles of delta G in biochemical reactions (list two)?
A certain substance has a heat of vaporization of 29.00 kj/mol. At what Kelvin temperature will the vapor pressure be 3 times highe
How many milliliters of a 0.40% (w/v) solution of nalorphine must be injected to obtain a dose of 1.5mg
the heat capacity of solid lead oxide pbo is given bycp jmol k 44.35 1.67x10-3tcalculate the change in enthalpy of pbo
Commercial concentrated aqueous hydrogen peroxide is 30.% H2O2 by mass and has a density of 1.11 g/mL. What is the molarity of this solution
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