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Net ionic equations to describe the formation of precipitate when soda ash (Na2CO3) is added to hard water
What mass of P4 is required to react with excess oxygen and produce 16.42 g of H3PO4, if the percent yield is 75.45%? P4 + 5 O2 + 6 H2O ® 4 H3PO4
Propose a structure for a C6H15O2N compound that is unstable in aqueous acid and has the following NMR spectra: 1H NMR: ? 2.30 (6H, s); ? 2.45 (2H, d, J = 6 Hz); ? 3.27 (6H, s); ? 4.50 (1H, t, J = 6 Hz) 13C NMR: ? 46.3, ? 53.2, ? 68.8, ? 102.4
What volume of hydrogen gas is produced when 1.40 mol of carbon monoxide reacts completely according to the reaction at 0oC and 1 atm?
formation of a compound cannot be truly explained. What is your view on this topic? Are there any other factors that should be considered?
A rock is found to contain 84.2% of the amount of uranium-238 that it contained when it was formed. (The amount that the rock contained when it was formed can be deduced from the presence of the decay products of
Draw the product of the reaction of cyclopentanone with chromic acid. If no reaction occurs, draw cyclopentanone. Hydride reduction (with LiAlH4 or NaBH4) of (S)-3-phenyl-2-butanone has been reported in the chemical literature and gives a mixture o..
Using your knowledge of chemistry, describe at least one method that could be used to remove lead(II) acetate from a sample of wine.
A voltaic cell consists of a half-cell and a half-cell at 25 . The initial concentrations of and are 5.10×10-2 and 1.40 , respectively.
Consider the titration of 100.0 mL of 0.100 M H2NNH2 (Kb = 3.0 10-6) by 0.200 M HNO3. Calculate the pH of the resulting solution after the 20.0 mL of HNO3 have been added.
What volume of 0.200M HCl must be added to 250.0mL of 0.300M sodium mandelate to produce a buffer solution with a pH of 3.37.
It required 22.7mL of HCl to reach the orange-red end point. Calculate the molar solubility and Ksp of calcium hydroxide.
A wastewater treatment plant discharges treated sewage into a river, the effluent contains a daily average of 15mg/L of NH4+. The rate constant of NH4+ bio-consumption is 0.03 1/d
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