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Constant current of 101.0{\rm A} is passed through an electrolytic cell having an impure copper anode, a pure copper cathode, and an aqueous {\rm CuSO_4} electrolyte.
How many grams of oxygen are needed to react completely with 1290 grams of pentanone (C5H10O)?
A certain lead-sulfur compound contains 86.59% Pb by mass and the remainder is sulfur. What is the empirical formula of the compound
The antifreeze in a car was a 50% by weight solution of ethylene glycol C2H6O2 in water. Calculate the boiling point and freezing point of this solution. (for H2O: Kb= 0.52 C/m... Kf=1.86 C/m
Determine how many grams of Hydrogen are required to form 14.01grams of Ammonia and calculate how many grams of ammonia could be formed
calculate delta s values for following reactions. in each case, account for the sign of delta s. a) C2H4(g) + H2(g) ---> C2H6(g)
hydrogen is collected over water, two gases are present hydrogen and water vapor.calculate partial pressure of hydrogen gas. Barometric pressure = 773.94 mmhg.
Show the electron configuration of phosphorus, P . Be sure to arrange the subshells in order of energy, with the lowest-energy subshell at the bottom and the highest-energy subshell at the top.
Assuming that the process is working as intended, draw and label the flowchart, do the degree-of-freedom analysis, and estimate the molar flow rate (lb-mole/h) of the humidified outlet air.
The fizz produced when a Alka-Seltzer tablet is dissolved in water is due to the reaction between sodium bicarbonate(NaHCO3) and citric acid(H3C6H5O7): 3NaHCO3(aq) + H3C6H5O7(aq) --> 3CO2(g) +3H2O(l)+Na3C6H5O7(aq)
Two methods for determining Hg in coal fly ash using atomic absorption were used to see if both methods would give the same results. In the first method only HNO3 is used for digestion,
A flask contains 0.250 mol of liquid bromine, Br2. Determine the number of bromine molecules present in the flask.
a sample of 1.00 l of gas at ntp conditions contains 20 oxygen and 80 nitrogen. calculate the number of moles of each
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