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Explain an aqueous of solution of phosphoric acid typically 5% by weight H3PO4, p=1.03 g mL-1 is sometimes used to remove deposits in a power plant. State the successive Ka values for the ionization of phosphoric acid are 7.1 x 10-3, 6.3 x 10-8, and 4.3 x 10-13.Explain is phosphoric acid a strong or weak acid with reference to above data?
al3 is reduced to als at an electrode. if a current of 2.00 ampere is passed for 48 hours what mass of aluminum is
A certain mass of oxygen was collected over water when potassium chlorate was decomposed by heating. The volume of the oxygen sample collected was 870 mL at 40C and a barometric pressure of 755 torr.
what must a solute's distribution ratio be if 99% of the solute in a 50ml sample is to be extracted with (a) a single 50 ml portion of an organic solvent. (b)two 25 ml portions of the organic solvent
The second-order rate constant for the decomposition of nitrous oxide (N2O) into a nitrogen molecule and oxygen atom has been measured at different temperatures given below.
Heat the solution to a gentle boil and maintain the heat for 1 minute to remove dissolved carbon dioxide. Add 4-8 drops of bromophenol blue indicator, which is yellow in acidic solution and blue in basic solution. If the solution is blue, pipet an..
What is the total number of moles of electrons transferred in this reaction: 2 C7H16O + 21 O2 = 16 H2O + 14 CO2? What is the oxidation and reduction pathway?
A sample that weighs 0.1586 grams contains only sodium chloride and potassium chloride was dissolved in water. It took 22.90 mL of 0.1000 AgNO3 to precipitate all of the chloride present.
A system at equilibrium contains I2(g) at a pressure of 0.16 atm and I(g) at a pressure of 0.20 atm. The system is then compressed to half its volume
How many photons will be required to raise the temperature of 2.3 g of water by 2.1k ? Water is exposed to infrared radiation of wavelength 2.7×10?4 cm . Assume that all the radiation is absorbed and converted to heat.
How much energy is released during the complete combustion of 372 grams of cyclohexane ?
Suppose that when you exercise, you consume 100 g of glucose and that all the energy released as heat remains in your body at 37 degrees Celsius. what is the change in entropy of your body
An ideal solution is formed from a mixture of the nonvolatile solute urea, CO(NH2)2, and methanol, CH3OH. The vapor pressure of pure methanol at 20°C is 89 mmHg. If 4.9 g of urea is mixed with 31.0 g of methanol, calculate the vapor pressure of th..
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