Find copper ion concentration in system at equilibrium
104. A 50.0 mL sample of 2.0 × 10-4 M CuNO3 is added to 50.0 mL of 4.0 M NaCN. The formation constant of the complex ion Cu(CN)32- is 1.0 × 109. What is the copper(I) ion concentration in this system at equilibrium?
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Aluminum reacts with hydrochloric acid to produce aluminum chloride and hydrogen gas. If 927 mL of hydrogen gas is collected by displacement of water at 740.0 mm Hg and 20. °C, what mass of Al was used?
Draw a dot and cross diagram to show the bonding in CH2F2. Your diagram only needs to show the outer shell electrons.
Design a negative edge-triggered D flip-flop that uses three SR latches constructed with cross-coupled NOR gates. Also connect asynchronous inputs Preset (PST) and Reset (RST). Draw the logic diagram and graphic symbol of the flip-flop.
A valve connected to the cylinder is now opened, and air is allowed to escape until three-quarters of the mass leaves the cylinder at which point the volume is 0.05 m3.
The formation constant of the complex ion Cu(CN)32- is 1.0 × 109. What is the copper(I) ion concentration in this system at equilibrium?
A solution of malonic acid, H2C3H2O4 was standardized by titration w.1000M NaOH solution. If 20.76 mL of the NaOH solution were required to neutralize completely 13.15 mL of the malonic acid solution, what is the molarity of the malonic acid solut
A solution is prepared by dissolving 25.0 g of ammonium sulfate in enough water to make 100.0 mL of stock solution. A 10.0 mL sample of this stock solution is added to50.0 mL of water. Calculate the concentration of ammonium ions and sulfate ions
How many grams of CH3OH must be added to water to prepare 150mL of a solution that is 2.0 M CH3OH?
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Question: Identify a true statement about validity as applied to a test. Multiple choice question
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