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If the ground state electron configuration of an element is [Ar]3d^10 4s^2 4p^4, what is the typical charge on the monatomic anion of the element ?
53.0 ml of 1.50 m solution is diluted to a volume of 268 ml. . determine the final concentration if a 134 ml portion of
Which of the following materials will react with an acid to produce a gas. A) NaOH(aq) B) Na2CO3(aq) C) both (a) and (b) D) neither (a) nor (b) Which of the following materials will react with an acid to produce a gas
Calculate the pH when 59.0 mL of 0.229 M hydrochloric acid is mixed with 59.0 mL of 0.229 M sodium hydroxide solution at 25 °C. Calculate the pH when 59.0 mL of 0.229 M of a certain monoprotic weak acid
which of the following conceps best describes the reason that atoms are larger and electron energies are weaker as you
Did an experiment where we extracted the caffeine in 1 bag of tea. We added the bag of tea leaves to the solution where the sodium carbonate solution. Explain what the purpose of adding the sodium carbonate was.
How much A would have been extracted into ether if the orginal aqueous solution had been extracted once with a 500-mL portion of ether? What percentage of A would have been extracted by the ether?
Monochromatic light falls on any one of the diodes that comprise the detector array of your OcieanOptics spectrometer. The signal is directly proportional to what quality of the light that impinges on it?
A 1L flask is filled with 0.25 mol N2and 0.65 mol H2 at 20 oC. These gases react to make NH3, heating up the flask to a temperature of 45 oC.
Copper II sulfate dissolveds in water to form a blue solution. What species are present in solution, i.e., what is actually swimming around in solution? write the formulas.
Furoic acid, HC5H3O3, has a Ka value of 6.76 10-4 at 25C. Calculate the pH at 25C for a solution formed by mixing 28.0 mL of 0.260 M HC5H3O3 and 23.0 mL of 0.21 M NaC5H3O3 and diluting the total volume to 125 mL.
When 1.150 grams of an unknown nonelectrolyte dissolves in 10.0 grams of water, the solution freezes at -2.16°C. What is the molecular weight of the unknown compound? Kf for water = 1.86°C/m.
The number of moles in 15.39 g of C2H6O (molar mass =46.1 g/mol) is ,You transfer a sample of gas at 17 degrees C from a volume of 4.71 L and 1.10 atm to a container at 37 degrees C.
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