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1M solution of an unknown, monoprotic acid, has a pH=2.00. What is the value of the ionization constant, Ka for this acid?
Calculate th pH of 1.00 L of a buffer of 1.00 M CH3COONa/1.00 M CH3COOH to which 0.210 mol of NaOH has been added
A 4.30 g nugget of pure gold absorbed 293 J of heat. The initial temperature was 29.0°C. What was the final temperature?
calculate the amount in grams of calcium sulfate which is formed when 185 grams of calcium fluoride are reacted with excess sulfuric acid.
A piece of metal of mass 27 g at 99?C is placed in a calorimeter containing 45.1 g of water at 21?C. The final temperature of the mixture is 38.7?C.
Describe Alkene Products, When tert-pentyl bromide is treated with 80% ethanol, the amounts of alkene products indicated below are detected on analysis.
Calculate the energy (joules) required to achieve the transition from the ground state to the first excited state for this system.
What should the molar concentrations of benzoic acid and sodium benzoate be in a solution that is buffered at a pH of 4.55 and has a freezing point of -2.0 °C.
The total volume of both metals is measured by the displacement of water to be 426 and the total mass is 4.40 . What percentage of the spheres are copper?
what mass of (NH4)2SO4 must be dissolved in 0.100L of 0.350M NH3 to produce a buffer solution with pH 10.05?
How many moles of Na3C6H5O7 can be produced if one tablet containing 0.0164 mol of NaHCO3 is dissolved?
write a balanced chemical equation for the reduction of dl-camphor by NaBH4. Assume all H of NaBH4 are used in the reduction.
A mixture of gas contains 46.3 % methane, 37.2% ethane and 16.5% propane(by mass). A 477g sample of the gass is burned with exces oxygen
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