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The pH of an aqueous solution is 6.17 at 25 degree C. Calculate the Ka for the acid. The initial acid concentration is 0.011M.
Geologist can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hardens and then decays with first-order kinetics and a half-life
Three manufacturers are producing carbonated bottled water. One company introduces carbonate by bubbling carbon dioxide into water until CT=10-3 M (equivalent to adding "H2CO3*" until CT = 1 x 10-3 M), a second adds sodium bicarbonate (NaHCO3) unt..
Teperature(K) Pressure(Torr) 65 130.5 70 289.5 75 570.8 80 1028 85 1718 1. Use the data to determine the heat of vaporization of nitrogen. 2.Determine the normal boiling point of nitrogen
The standard reduction potential for the reduction of Eu3+(aq) to Eu2+(aq) is -0.43V. Which of the following substances is capable of reducing Eu3+(aq) to Eu2+(aq) under standard conditions
When 0.0024 moles of a weak acid are dissolved in enough water to make 0.500 L, the pH of the resulting solution is 5.28. Calculate Ka.
hydroxylamine is titrated to the equivalence point with 35.8 m of .15 M HCl. What is the pH at the equivalence point?
state three examples each of acidsbases and salt commonly used in therapeutic process. nbspfrom the examples you state
10.0 mL of a 0.30 M sodium phosphate solution reacts with 20.0 mL of a 0.20 M lead(II) nitrate solution (assume no volume change). What is the concentration of nitrate ions left in solution after the reaction is complete
In a concentration cell established using 0.120 M Ag+ solution and a saturated AgCN solution, the measured Ecell is 0.8500 V. Calculate the molarity of the Ag+ ion in the saturated solution.
the specific heat of compound a is 0.50 calg degrees celsius. what amount of heat has been added to 100.0 g of compound
a high-boiling bp 202-204 degrees c burns with a yellow sooty flame. sodium fusion indicated that halogens nitrogen
a 1.33 m solution of citric acid h3c6h5o7 in water has a density of 1.10 gcm3. calculate the mole fraction of the
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