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Write a balanced half-reaction for the reduction of hydrogen peroxide to water in an acidic solution.
a. 2H2O2(l) + 2e- --> 2 H2O (l) + O2(g)
b. H2O2(l) + 4H+(aq) + 2e- --> 2H2O(l) + H2(g)
c. H2O2 (l) + 2H+(aq) + 4e- --> 2H2(g) + O2(g)
d. H2O2(l) + 2H+(aq) + 2e- --> 2H2O(l)
e. 2 H2O2(l) ---> 2 H2O(l) + O2(g)
what mass in grams of hydrogen gas is produced if 20 mol of Zn are added to excess hydrochloric acid according to Zn+2HCl yields ZnCl2+H2?
Express the concentration of a 0.0480 M aqueous solution of fluoride, F-, in mass percentage and in parts per million. Assume the density of the solution is 1.00 g/mL.
How could a 13c NMR spectrum be used to distinguish between the structures for 9-fluorenone and 9-hydroxyfluorene
How much heat is gained (in Joules) by the water where a chemical reaction takes place in 100 mL aqueous solution and has a temperature increase of 14 C?
what masses ofnbsp calcium sulfate and phosphoric acid can be produced from the reaction of 1.0kgnbsp calcium phosphate
A sample of gas in a balloon has an initial temperature of 22 and a volume of 1610 . If the temperature changes to 58, and there is no change of pressure or amount of gas, what is the new volume, , of the gas?
How do you calculate the number of moles of all sulutes (including cations and anions): Please show how to solve the problem.
Discuss the merits and disadvantages of dispensing a drug as a reacemic mixture or as a single enantiomer.
Calculate the final temperature of 32 mL of ethanol initially at 11 degrees C upon absorption of 562 J of heat.
Nitric oxides, NO and NO_2, contribute to air pollution, acid rain, and the depletion of the ozone layer. After NO forms in the combustion chamber of an automobile engine, it reacts further with oxygen to form NO_2. The reaction is given by 2NO (g..
HClO is a weak acid (Ka = 4.0 × 10-8) and so the salt NaClO acts as a weak base. What is the pH of a solution that is 0.077 M in NaClO?
A sample of oxygen that occupies 2.5 × 10-6 mL at 508 mm Hg is subjected to a pressure of 1.2 atm. What will the final vol ume of the sample be if the temperature is held constant?
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