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Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.220 M HClO(aq) with 0.220 M KOH(aq). The ionization constant for HClO (4*10^-8)
How much forested land would be needed to produce all of the given country's power? (Assume that the given country has little fossil resources.) Is this a sustainable alternative?
Explain the importance of a universal standard in measurement
Using the equation pKa= -log Ka, calculate the Ka from the pH value and the starting acetic acid concentration. Calculate the Ka of acetic acid.
The Henry's Law Constant for O2 in water at 20 C is 1.28x10-3mol/(L atm). How many grams of O2 will dissolve in 2.0L of H2O that is in contact with air where partial pressure of O2 is 0.209atm?
From the data below, calculate the total heat (in Joules) needed to convert 0.333 mol of gaseous Ethanol (MW - 46.07 g/mol) at 300 degrees Celsius
A sugar-water mixture contains 45.8 g of sugar and 108.5 g of water. What is the percent by mass of sugar and the percent by mass of water in the solution?
Small helium-neon lasers emit 2.94 mJ/s of light at 634 nm. How many photons does such a laser emit in one minute?
Hydronium ion concentration using Henderson-Hasselbalch equation - What is the hydronium ion concentration of a solution
In a calorimeter, 100 g of ice melts at 0oC. The enthalpy of fusion of the ice is 334 J/g. How much heat was absorbed.
White phosphorus is a molecular solid made of molecules of P4. A 3.05 g sample of white phosphorus starts at 20oC. Calculate the amount of heat (in J) required to melt the sample.
barium hydroxide solution PH = 10.5 is needed. How many grams of Barium hydroxide are needed
If 860 liters of neon at 45°C and 800 mm. are decreased to 700 liters at the same pressure, what is the new temperature of this gas?
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