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A student titrated a sample containing 105 ml of 0.28M NaOH with 0.74 M HCl. Explain what is the pH of the solution after 23 ml of the hydrochloric acid has been added?
1) 142) 133) 14) 75) 0
distillation is frequently used to isolate the nonvolatile organic solute from a solution containing an organic
Use the following data to estimate the normal boiling point and the molar enthalpy of vaporization of lead
A local radio station can be tuned in by dialing your radio to a frequency of 101.5 MHz. Calculate the wavelength. (Hint: MHz means 1 x 106 Hz.)
Explain in terms of colligative properties, ion pairing, and van't Hoff factors why the freezing points of the following set of 0.100 m aqueous solutions follows the trend LiF>LiCl>NaI>CsI>FeI2>FeI3
question a deep-sea diver uses a gas cylinder with a volume of 50.0 l and a content of 51.2 g of o2 and 132.6 g of he.
In the boron trifluoride etherate-catalyzed reaction of acetic anhydride and salicylic acid to produce acetylsalicylic acid, or aspirin, anhydrous conditions prevail. So, what serves as the base, as water cannot?
Describe how a phospholipid differs from other fatty acids. How does this difference allow the formation of a bilayer in an aqueous medium
Which solvents are the best for trimyristin: methanol,, acetone, cyclohexane,, dichloromethane or diethyl ether. How would you rank the solubility of each compound
Through what factor would one expect the intensity of carbon tetrachloride Raman lines to increase while changing the laser source wavelength from 868.8 nm to 450.3 nm
A 500-liter tank contains air at pressure 300 kPa and temperature 500K. Calculate the mass of the air in the tank
A variation of this experiment uses a balloon as the container for the carbon dioxide. Describe any additional measurements that you must make in order to find the molar mass by this method.
B: A 75.0 mL colume of 0.200 M NH3 (Kb=1.8x10^-5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 27.0mL of HNO3.
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