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The acid-dissociation constants of phosphoric acid (H3PO4) are Ka1 = 7.5 × 10-3, Ka2 = 6.2 × 10-8, and Ka3 = 4.2 × 10-13 at 25.0 °C. What is the molar concentration of phosphate ion in a 2.5 M aqueous solution of phosphoric acid?
consider the unbalanced equation c5h12l o2g --gt co2g h2ol if 25.2 grams of pentane c5h12 are burned in excess oxygen
here why is the -NHCOCH3 group less activating in electrophilic substitution compared to the -NH2 group
What is the pH of a 0.175-M potassium formate solution, KHCOO? The ionization of formic acid is 2.1 x 10^-4
If the speed limit is 75 mph, could the driver of the car reasonably evade a speeding ticket by invoking the Heisenberg uncertainty principle?
A molecule of unknown structure has a molecular formula of C9H8O2. In the infrared spectrum there are absorptions at 1761, 1145, and 761 cm-1. In the 13C NMR spectrum,
If a wheelchair-marathon racer moving at 13.3 miles per hour expends energy at a rate of 635 Calories per hour, how much energy in Calories would be required to complete a marathon race (26.2 miles) at this pace
what is the concentration of glyceraldehyde-3-phosphate? Assume a temperature of 25.0 °C. The constant R = 8.3145 J/(mol·K)
What alcohol would be most easily dehydrated. One that is on a long chain or a short chain
What is true about ideal gas particles? a. Particles interact via the Lennard-Jones potential b. Particle volume is approximated as a sphere with diameter b
Titanium occurs in the magnetic mineral ilmenite (FeTiO3), which is often found mixed up with sand. The ilmenite can be separated from the sand with magnets. The titanium can then be extracted from the ilmenite by the following set of reactions
Barbituric acid (ka = 1.1x10^-4) is used in the manufacture of some sedatives. For a 0.6733 M solution of barbituric acid, calculate
The statements in the following multiple choices deal with the relationship between solute concentration and various colligative properties. Choose the statement which is true.
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