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The activation energy for a given reaction is kJ/mol. What is the ratio of the rate constants for this reaction when the temperature is decreased from °C to °C?
How many isomers of dimethylcyclohexanediol could you get from complete hydroboration-oxidation of 1,4-dimethyl-1,4-cyclohexadiene? Draw them all.
An unknown solution forms a white precipitate when treated with 6 M HCl. The precipitate is incompletely soluble in hot water but dissolves completely in NH3
When you use the half reaction method to balance the redox reaction between one mole of NBS and ascorbic acid to give L-dehydroascorbic acid and succinimide, how many moles of electrons are transferred.
The equilibrium concentration of HA will be less than the stoichiometric concentration because some or all of HA ionizes.
Stalactites--the long icicle, icicle like formations that hang from the ceilings of caves--are formed from recrystallizing minerals like calcite (calcium carbonate, CaCO3, 100.09 g/mol). The Ksp of calcium carbonate is 4.5 x 10^-9.
A solution is prepared by mixing 66.7 g H2O with 33.3 g HOCH2CH2OH (ethylene glycol). What is the concentration of ethylene glycol in units of molality? The molar masses of water and ethylene glycol are 18.02 g/mol and 62.07 g/mol, respectively
How many grams of magnesium metal will react completely with 4.8 liters of 5.0 M HCl?
Which of the following compounds is soluble in water ? A) BaSO4
Compute the vapor pressure at 25 °C if it is given that the density of H 2 O=0.9971 g/mL , vapor pressure of H 2 O=23.76 torr, molar mass of sucrose, = 342.3 g/mol,
The resulting solution is titrated to a starch endpoint with 34.81 mL of the thiosulfate solution. Calculate the concentration of the thiosulfate solution.
The temperature of the entire system rose from 25.30 °C to 26.59 °C. Calculate the heat of reaction, in kJ, per mole of KOH(aq).
How many milliliters of 0.200 M NaOH will be required to titrate 19.6 mL of 0.479 M H2SO4
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