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Which of the following elements are capable of forming compounds in which the indicated atom has more than four valence electron pairs? C P Ne F Cl B Se Sn
why is an acetyl group added to aniline making acetanilide and then removed to regenerate the amine group in
Determine the % error for the quantity (0.5022g+-0.3mg) 2. Determine the % relative error for the following quantities
Deduce from these data the corresponding equation and write the formulas for the oxide and sulfate of M. Using the smallest whole number coefficients write the balanced equation for the reaction of the metal M with hydrochloric acid.
If 100. mL of 1.60 M Na2SO4 is added to 200. mL of 2.40 M NaCl, what is the concentration of Na+ ions in the final solution? Assume that the volumes are additive.
High-purity benzoic acid (C6H5COOH; delta H rxn for combustion= -3227 KJ/mol) is used as a standard for calibrating bomb calorimeters. A 1.221-g sample burns in a calorimeter (heat capacity= 1365 J/degrees Celsius) that contains exactly 1.570 kg o..
When 1.025 g of naphthalene is burned in a bomb calorimeter, the temperature rises from 24.25 to 32.33 degrees celsiuc. What is the delta E reaction?
what are possible sources of error that might lead to an erroneous determination of the concentration of the acetic
how many grams of solute are in the solution 498 mL of a.850 M Na2So4?
Use the standard half-cell potentials listed below to calculate the standard cell potential for the following reaction occurring in an electrochemical cell at 25°C.
Calculate the percent by mass of potassium nitrate in a solution made from 45.0 g KNO3 and 295 mL of water. Density of water is 0.997 g/mL.
If 30.00 mL of 0.500 M HCl is used to neutralize 10.00 mL of KOH, what is the concentration of the base?
a sample consisting of various gases contains 3.8times10-6 mole fraction of radon. this gas at a total pressure of 31
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