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What would be the pH of a buffer system containing 1.0 M NH3 and 0.10 M NH4Cl? (Kb(NH3) = 1.8 x 10-5)
with vapor pressures at room temperature of 88, 680, 155, respectively, in order of decreasing boiling points.
If there are 0.640 g of NaCl left in a beaker that originally contained 75.0 mL of saltwater, what must have been the molar concentration of the original solution? The molar mass of NaCl is 58.44 g/mol.
Describe how you would construct your target electrochemical cell, including the identities and concentrations of all chemical species, as well as a diagram of the setup.
Draw an example of the change in molar volume during a 1st and 2nd order phase transition vs. temperature.
Important information about Chair Conformation, Circle the least stable conformation as well.
Explain what health risks may arise people use this hot water in the preparation and cooking and what is the equilibrium constant for this reaction
acetic acid has a Ka value of 1.8x10^-5. How many grams of NaC2H3O2 would have to be added to 100 ml of .1 M HC2H3O2 to prepare a buffer with a pH of 4.5?
iron ore is produced through the following reaction in a blast furnace ironiii oxide carbon monoxide --gt iron carbon
If the pressure exerted by ozone, O3, in the stratosphere is 3.0 times 10^- 3 atm and the temperature is 254 K, how many ozone molecules are in a liter?
Methane reacts with oxygen to form carbon dioxide and water as shown:. determine how much methane must have reacted If 72 grams of water is formed,?
Metals such as magnesium and zinc react with dilute sulfuric acid to give hydrogen, according to the equation: M (s) + H2SO4 (aq) -------> MSO4 (aq) + H2 (g) When 5.00 g of a mixture of powdered magnesium and zinc were dissolved in diluted sulfuri..
Using the Grubbs test, decide wheter the value 216 would be rejected from the set of results 192, 216, 202, 195 and 204. G ( 95% confidence) : 1.463, 1.672, 1.822, 1.938, 2.032
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