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A) Write the half-reaction that occurs at a hydrogen electrode in acidic aqueous solution when it serves as the anode of a voltaic cell?
B) The platinum electrode in a standard hydrogen electrode is specially prepared to have a large surface area. Why is this important?
a solution is prepared by adding 40.3 g of Mg(NO3)2 to 127 g of water. Calculate the mole fraction and molality of magnesium nitrate in this solution
In the combustion reaction of 149 g of propane with excess oxygen, what volume of carbon dioxide if produced at STP?
The osmotic pressure,pie , of a solution of glucose is 83.1atm . Find the molarity of the solution at 298k .
Determine theoretical yield, limiting agent and excess reagent - How much excess reagent remains after the reaction goes to completion
A gaseous mixture of and contains 37.8 nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 785 ?
A physiological saline solution contains 154mEq/L each of Na+ and Cl-. How many moles each of Na+ and Cl- are in 0.600L of the saline solution?
By what factor (how many times) will the rate constant increase when the temperature is raised from 10°C to 28°C?
Find the volume of a gas inside a cylinder - What will be the resulting volume of this gas?
Find the change in the fraction of visibility for a person from planet Krypton with x-ray vision in addition to visible spectrum.
A hydrogen-filled balloon was ignited and 2.00 gram of hyrdogen reacted with 16.0 g of oxygen. How many grams of water vapor were formed?
fluride ion is poisonous in relatively low amounts. 0.2 g of F per 70 kg of body weight cause death . nevertheless, inorder to drinking water at a cencetration of 1 mg of F ion per L of water
Calculate the amount of heat required to completely sublime 14.0 g of solid dry ice (Co2) at its sublimation temperature
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