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A 10.0 mL sample of liquid bleach is diluted to 100. mL in a volumetric flask. A 25.0 mL aliquot of this solution is analyzed using the procedure in this experiment. If 12.1 mL of 0.30 M Na2S2O3 is needed to reach the equivalence point, what is the percent by mass NaClO in the bleach?
Methane undergoes the combustion, as shown in the chemical equation below. Using bond energies, estimate the energy change for this reaction. Please use the correct bond energy for the CO bond in CO2
Ethane, C2H6, has a molar heat of vaporization of 15 kJ/mole. How many kilojoules or energy are required to vaporize 5 g of ethane?
Consider the equilibrium represented by the following equation: Heat + H2O(l) H2O(g) in which T=373K, P=101kPa Which of the following will favour the reverse reaction? (a) The total volume of the system is increased
One mole of an ideal gas undergoes an isothermal reversible expansion, doing 1 kJ of work and doubling the volume. What is its final temperature? How much heat was added to the gas
If 19.4 grams of an aqueous solution of sodium bromide, NaBr, contains 1.69 grams of sodium bromide, what is the percentage by mass of sodium bromide in the solution
Enough of a monoprotic acid is dissolved in water to produce a 0.0197 M. The PH of the resulting solution is 6.41. Calculate the Ka for the acid.
How many grams of F2 are needed to produce 157 g of PF3 if the reaction has a 79.8% yield?
a 45- piece of ice at 0 is added to a sample of water at 12. all of the ice melts and the temperature of the water
Consider 1.00 L of air in a patient's lungs at 37.0 C and 1.00 atm pressure. What volume would this air occupy if it were at 25.0°C under a pressure of 5.00* 10-2 atm (a typical pressure in a compressed air cylinder)?
Arrange the following ionic compounds in order of decreasing amount of energy released in lattice formation:
What is a reaction equation that would support the explanation? could you use NaOH instead of NaHCO3? Explain
A 0.5872-gram sample of potassium hydrogen phthalate (KHC8H4O4) is dissolved in 50.0 mL of solution. What is the molarity of this solution
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