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At a pressure of O2 of 1.00atm, the solubility of O2 in water is 1.3x10^-3 m at 298K. What pressure of O2 would be required to have a solution of 1.5X10^-3g of O2 in 250g of H2O at 298K?
A solution is prepared by mixing 78.0 mL of 5.00 M HCl and 35.0 mL of 8.00 M HNO3. Water is then added until the final volume is 1.00 L. Calculate [H+ ], [OH - ], and the pH for this solution.
A sample of silver chromate (Ag2CrO4) has a mass of 24.7 g. (a) How many Ag+ ions are present? ions (b) How many CrO42- ions are present? ions (c) What is the mass in grams of one formula unit of silver chromate? g/formula unit
A closed vessel contains moist air at 20 degree celcius, the relative humidity being 30 %. What would be the relative humidity become if the vessel were cooled to 10 degree celcius?
The mass of a cube of iron is 363 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions?
The water level in a graduated cylinder initially at 217 rises to 286 after a piece of lead is submerged. What is the mass in grams of the lead?
calculate the number of grams of iron and the number of grams of carbon dioxide formed
The H+ concentration of a 1 M solution of benzoic acid is 8x10^-3 M. What percent of the benzoic acid, C6H5COOH is ionized in this aqueous solution?
What is the percentage ionization of the acid? What is the value of Ka for the acid? 2) Periodic acid, HIO4, is an important oxidizing agent and a moderately strong acid. In a 0.20 M solution
Suggest reasons why recrystallization from water would probably not be suitable procedure for purifying
Draw the major, neutral organic product for each substitution reaction below
After treatment with trypsin, which cleaves at R and K, there were 3 fragments: two dipeptides and MGAV. What is the sequence of the peptide? Use the one-letter abbreviations for the amino acids, and do not use dashes.
At 0.0oC, if the volume of air is 3.3 mL and the pressure of the atmosphere that day is 835 mmHg, what is the number of moles of air?
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