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zinc metal is amphoteric and will react similarity to aluminum metal, dissolving in aqueous strong base. Write a balanced molecular equation for the reaction between zinc metal, NaOH, and water to produce Na2[Zn(OH)4] and hydrogen gas.
typically when a person coughs he or she first inhales about 2.40 l of air at 1.00 rm atm and 25 circ rm c. the
Calculate the change in internal energy of the following system: a balloon is cooled by removing 0.651kJ of heat. It shrinks on cooling, and the atmosphere does 384J of work on the balloon.
This compound undergoes catalytic hydrogenation to give 2,2,4-trimethylpentane.
The iron content of iron ore can be determined by titration with standard KMnO4 solution. The iron ore is dissolved in excess HCl and the iron reduced to Fe+2 ions. This solution is then titrated with KMnO4 solution, producing Fe+3 and Mn+2 in aci..
table salt and sugar are accidentally mixed a 4.90g sample is burned and 2.20-g of co2 is produced. what is the mass
What are the values of Ka and pKa for lactic acid? b. Calculate the pH of a .10M HCN solution, which has a Ka = 1.4x10^-9 at 25C. Assume that the dissociation of HCN is negligible compared to its initial concentration.
Calculate ?G° for the reaction of ammonia with fluorine. 2NH3(g) + 5F2(g) ? N2F4(g) + 6HF(g) Substance: NH3(g) F2(g) N2F4(g) HF(g) ?G° f (kJ/mol)
Lactic acid (abbreviated HL) is made into a 0.100 M solution whose pH = 2.44. What is the ka for HL
How much heat (in kJ) is needed to convert 866 g of ice at -15 degress celsius to steam at 146 degrees Celsius? (The specific heats of ice and steam are 2.03 and 1.99 J/g x C respectively)
Answer the following questions: a) can Al3+(aq) oxidize tin (Sn) under standard-state conditions?; b) would it be OK to store an aqueous AlCl3 solution in a tin container?; c) can Sn2+(aq) oxidize aluminum (Al) under standard state conditions?; d)..
The side rection most often encountered in diels-alder syntheses is dimerization, in which the diene also acts as a dienophile. For example, butadiene can react with itself to yield 4-vinylcyclohexene . Draw the structures of four possible Diels-a..
A 100 ml sample of 0.10 M Ca(OH)2 is titrated with 0.10 M HBr. Determine the pH the solution after the addition of 300.0 ml HBr
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