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Draw a concentration cell for 0.10 M Cu2+ and 2.0 M Cu2+ cell, show the following on each compartment clearly.
(a) All the component of each cell, including the concentrations in anode and cathode half cells.(b) Mark the cathode and the anode(c) Write the reaction that occurs in each cell under the cell(d) The direction that electrons are transferred.(e) The complete reaction, include the concentrations
An ammonia/ammonium buffer solution contains 0.19M NH3 and 0.61M NH4+. The Kb value of ammonia is 1.8 x 10^-5 . Calculate the pH of this buffer.
Describe how you would prepare the following aqueous solution: 230 g of a solution that is 0.60 molal Na2CO3 starting with the solid solute.
A metal sample weighing 34.526 g was heated to 98.0 C then quickly transferred into Styrofoam cup calorimeter containing 74.365 g of distilled water at a temperature of 27 C. The temperature of the water in the cup increased and stabilized at 29 C..
H2(g) + F2(g) 2HF(g) H = -542 kJ How many grams of H2(g) would have to react to produce 197 kJ of energy?
The number of resonance structures (not involving d orbitals) required to correctly describe the bonding in the linear ion Nâˆ'3 is:
When a 8.37-g mixture of methane, CH4, and ethane, C2H6, is burned in oxygen at constant pressure, 445.8 kJ of heat is liberated. What is the percentage by mass of CH4 in the mixture
How can 1-bromopropane be used to prepare each of the following. (a) ethanal (b) propanone
here why is the -NHCOCH3 group less activating in electrophilic substitution compared to the -NH2 group
10.0 mL of a 0.30 M sodium phosphate solution reacts with 20.0 mL of a 0.20 M lead(II) nitrate solution (assume no volume change). What is the concentration of nitrate ions left in solution after the reaction is complete
Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 40. cm3. If the combustion of this mixture releases 860. J of energy, to what volume will the gases expand against a constant pressure of 650
Determine the limiting reactant and also calculate how much of the gas is produced?
How many moles of chloroform, CHCl3, are required to fill a 253-mL flask at 100.0°C and 940 torr?
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