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Assuming that the volumes are additive, what is the concentration of KBr in a solution prepared by mixing 0.246 L of 0.081 M KBr with 0.600 L of 0.055 M KBr?
how could you use IR spectroscopy to identify which alkene is in which vial? How do you determine what the wavenumber values are for specific compounds/ elements?
Compute the mass of air in an air-filled tire and the also determine the mass of He in a helium-filled tire
An athlete wants to acquire red blood cells from a donor with the same blood type. Taking into consideration that blood is composed of three components, plama, red blood cells, and leukocytes. what instrument have used in our lab experiments that ..
a student was asked to identify an unknown hydrate by following the procedure described in this module. after heating
An optimization from a particular starting structure of a compound C5H10O2 leads to an energy of 25.12 KJ/mol.
Write chemical equations showing how each of the following weak bases ionizes water to form OH-. With NH3
The first-order rate constant for the reaction of methyl chloride (CH3Cl) with water to produce methanol (CH3OH) and hydrochloric acid (HCl) is 3.32 10-10s-1 at 25°C. Calculate the rate constant at 38°C if the activation energy is 116 kJ/mol.
When 50.0 grams of metal at 75.0 °C is added to 100. grams of water at 15.0 °C, the temperature of the water rises to 18.3 °C. Assume that no heat is lost to the surroundings.
Calculate the amount of heat necessary to raise the temperature of 12.0g of water from 15.4 degrees celsius to 93.0 degrees celsius
The equilibrium constant expression for the reaction 2BrF5(g) Br2(g) + 5F2(g) is A) Kc = [Br2] [F2] / [BrF5] D) Kc = [BrF5]2 / [Br2][F2]5 B) Kc = [Br2] [F2]5 / [BrF5]2 E) Kc = 2[BrF5]2 / ([Br2] × 5[F2]5) C) Kc = [Br2] [F2]2 / [BrF5]5
Calculate the pH of the resultant solution of mixing together two solutions of 2 L of 1.0 M acetic acid, 0.5 L of 1.0 M sodium acetate and then adding 8 g of solid NaOH (MW = 40.0 g/mol)
ampere current have to be applied to plate out 8.00 grams of copper metal from te aqueous copper(II) sulfate solution?
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