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A constant current is passed through a solution containing Cu2+(aq) resulting in the deposition of 4.40 g of Cu at the cathode. Assuming a current efficiency of 100%, if this same current is passed through a solution of TcO4 for the same amount of time, how many grams of Tc would form at the cathode?
A) 0.969 gB)1.94 gC)6.78 gD)13.6 g
The most two most abundant elements in the crust are oxygen (4.55 X 10^5 g/t, where t stands for metric ton; 1 t=1000kg) and silicon (2.72 X 10^5 g/t), and the two rarest non radioactive elements are ruthenium and rhodium, each with an abundance o..
A fire extinguisher with a volume of 1.0 ft3 initially contains CO2 at 20 oC and atmospheric pressure and weighs 25 pounds. After being charged with CO2 to a pressure of 300 psig at 20 oC, what is the weight of the extinguisher.
In our Ochem lab for nitration of bromobenzene we didn't further seperate the product mixture of 4-bromonitrobenzene and 2-bromonitrobenzene and yet we have to calculate the percent yield of the mixed product using percent distribution
1.how enzymes work draw and label a reaction coordinate diagram for an uncatalyzed reaction s p and the same reaction
If I burn 0.315 moles of hexane (C6H14) in a bomb calorimeter containing 5.65 liters of water, what's the molar heat of combustion of hexane is the water temperature rises 55.4 ºC? The heat capacity of water is 4.184 J/g ºC .
The solution is filtered, and a 60.00mL sample titrated with HCl requires 11.13mL of 9.78×10?2 M HCl to reach the end point. Calculate Ksp for Ca(OH)2
The standard enthalpy change for the reaction of 1.85 moles of CO(g) at this temperature would be -524 kJ. Ho = -506.5 + 344 * -173.1 divide it all by 1000= -566.0kj i dont understand how they got -566.0kj, when i put it in my calculator
a physiological saline solution contains 169meql each of na and cl-. determine how many moles of each na and cl- are in
What is H in kJ for the process of freezing a 39.2 g sample of liquid antimony at its normal melting point of 631oC. is it positive or negative
upon catalytic hydrogenation unknown Z gives cyclooctane. Oxonolysis of Z followed by reduction with dimethyl sulfide, gives a three0carbon dialdehyde and a five-carbon dialdehyde. Draw the stucture of Z.
A company produces vinegar products and discharges between 50,000 and 200,000 gallons per day (131 to 525 L / min) of a liquid waste stream that contains only acetic acid at a concentration of 80 mg/L.
Visualize whats happening at the molecular level and explain how your products wind up in the Hickman's collection well. What would happen if you placed the Hickman above the water condenser?
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