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How many liters of 0.25 M NaOH would I have to add to a acidic solution of pH 3.365 to make a solution of pH 7?Acidic solution is 50mL.
Assume that the heat required for the vaporization of the alcohol comes only from the aluminum block and that the alcohol vaporizes at 25. Suppose that 1.15 of rubbing alcohol evaporates from a 65.0 aluminum block.
A solution is .855% HNO3 by mass. Density of the solution is 1.01 g/mL. Find [H+], [OH-], and pH.
You have 75.0 mL of a 2.50 M solution of Na2CrO4(aq). You also have 125 mL of a 1.52 M solution of AgNO3(aq). Calculate the concentration of CrO4 2- after the two solutions are mixed together.
Potassium nitrate has a lattice energy of -163.8 kcal/mol and a heat of hydration of -155.5 kcal/mol. How much potassium nitrate has to dissolve in water to absorb 103kJ of heat?
Hardness in groundwater is due to the presence of metal ions, primarily Mg2 and Ca2 . Hardness is generally reported as ppm CaCO3 or mmol/L Ca2 . To measure water hardness
A sealed container holds 1.00 mole of helium and 2.00 moles of nitrogen at 30.0°C. When the total pressure of the mixture is 666 mm Hg, what is the partial pressure of the nitrogen? Provide an answer correct to 2 significant figures in mmHg.
When measuring the boiling point of a compound, why is the micro boiling point determined at the point when the last bubble has left the bottom of the bell and the liquid begins to rise in the bell
An electron in the ground-state He+ ion undergoes a transition to a state described by the wavefunction R4,1(r)Y1,1(?,). (a) Describe the transition using term symbols. (b) Compute the wavelength, frequency, and wavenumber of the transition.
What are the concentrations of H30+, OH-, NH4+ at the equivalence point? What is the pH of the solution at the equivalence point
Thyroxine, an important hormone that controls the rate of metabolism in the body, can be isolated from the thyroid gland. If 0.455 g of thyroxine is dissolved in 10.0 g of benzene, the freezing point of the solution could be measured as 5.144oC.
You respond to a 2AM liquefied compressed gas transportation accident which is leaking from a 5lb (2.3kg) steel cylinder. Chemical commodity on shipping paper is 5 lb RQ, compressed gas, flammable, toxic, n.o.s. (poison - inhalation hazard, zone B..
Calculate the enthalpy and entropy departure for water at 400 C and 30 MPa using generalized correlations. Compare these values to those in the steam tables
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