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A 25ml sample taken from saturated solution of Ca(OH)2 required 36.0ml of 0.100M HCl to titrate. Calculate the concentration (mol/L) of hydroxide ions in the original sample.
A solution contained KIO3 and excess KI. 25 cm3 of this solution were acidified and the liberated I2 required 26.8 cm3 of 0.1 M Na2S2O3 for complete recaction.
how does the attractive force that the nucleus exerts on an electron change with the principal energy level of the electron?
(a) What was the molar concentration of acetic acid in the vinegar (b) Assuming the density of the vinegar to be 1.1 g/mL, what was the percent (by mass) of acetic acid in the vinegar
.20g of methyl alcohol, CH3OH, are dissolved in 16.8g of water, H2O. What is the mole fraction of the solute.
Calculate the change in Gm for ice at -10C, with density 917kg/m^3 when the pressure is increased from 1.0 bar to 2.0 bar. Self test 3.12
Explain why C-H single bond stretching is observed in the functional group (higher energy) region of the IR, but the absorptions corresponding to other single bond stretching vibrations
A 50mL portion of a solution containing .2g of BaCl2.2H20 is mixed with 50mL of a solution containing .3g of NaIO3. Assume the solubility of Ba(IO3)2 in water is small.
Which protein(s) will bind tightly to CM Sephadex (a cation exchange resin) if loaded onto the column in a sample buffer whose pH is 7.0
What are the 8 balanced molecular equations for all of the chemical reactions involved in the copper cycle experiment
In the distillation of a flammable mixture why is it important to keep the graduated cylinder distillation receiver as high up the bottom of the bent vacuum adapter as possible
A sample of oxygen is collected over water at a total pressure of 616.8 mmHg at 30 deg Celsius. the vapor pressure of water at 30 deg celsius is 31.8 mmHg. What is the partial pressure of the O2
Calculate the pH for each of the following cases in the titration of .50 mL of .150 M hypochlorous acid, HCLO(aq)
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