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Equal volumes of the following pairs of solutions are mixed. Which pair will produce a buffer solution?
A. 0.10 M HCl and 0.05 M NH3
B. 0.10 M HCl and 0.05 M NaOH
C. 0.10 M HCl and 0.15 M NH3
D. 0.10 M HCl and 0.20 M NaCl
E. 0.10 M HCl and 0.20 M CH3COOH
Determine the molar concentration of chloride ions after adding 225 ml of 0.625 MKCL with 615 ml of 0.385M MgCl2 if final volume of the solution is 840ml.
A voltaic cell is constructed with an Ag/Ag+ half-cell and a Pb/Pb2+ half-cell. Measurement shows that the silver electrode is positive. Write balanced half-reactions and the overall spontaneous reaction.
A procedural change would be essential if a boy want to determine the tomato juice's acidity by titrating a sample of juice with NaOH(sodium hydroxide) solution Briefly explain What change would you make to the procedure ?
An ionic compound forms when calcium (Z = 20) reacts with iodine (Z = 53). If a sample of the compound contains 1.20 1019 calcium ions, how many iodide ions does it contain?
What hybrid orbital would be expected for the central atom in each of the following: Draw the molecular structure of these compounds and label Ï? and Ï?bonds.
What are 3 most significant structural differences between HPLC equipment and Ion Chromatography instruments
If 8.6 L of NO is combined with excess O2 at STP, what is the volume in liters of the NO2 produced?
Calculate the value of Avogadro's number to three significant figures based on these data. (Note: the value may differ from the tabular value).
What proportion of 3-phosphoglycerate will carry 14C after five enzymatic turnovers (five equivalents of CO2 are fixed) if purified active
the laboratory is dissolved in 95% ethanol, diluted with water, and titrated to a phenolphthalein endpoint with 17.3 mL of 0.114 M NaOH. What is the percent purity of aspirin in the sample?
Dibenzalacetone is commonly used in sunscreens. Suggest what properties are valuable in a compound for use as a sunscreen.
Is strategic behavior important in this market pharmaceutical drugs. Avoid answering any of the questions with a quote.
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