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What is the total pressure of a mixture of the following gases. Oxygen with a partial pressure of 221 mmHg, nitrogen with a partial pressure of 467 mmHg, and helium with a partial pressure of 29 mmHg
Based on the data gathered in Millikan's oil-drop experiments, the concept of atomic structure was modified. Which of the following aspects of the structure of the atom was validated by these experiments
25.00 ml aliquots of thiis solution was titrated with monoprotic strong base NaOH (0.0800 M). The titre volume of NaOH was 40.00ml. Calculate the molecular weight of H2A.
Predict the anode, cathode, and overall cell reactions when an aqueous solution of each of the following salts is electrolyzed in a cell having
A 10ml sample of pure orange juice was diluted with 40mL of metaphosphoric acid solution. Then 10mL of diluted juice wastitrated to an end point with 9.27mL of DCIP. A blank required .25mL of DCIP. A 1mg sample of pure ascorbic acid required6.52mL
Consider the acid HB with a Ka=5.8 x 10-10 (a) what is the kb for the B- ion and (b) what is the pkb
the equilibrium would shift to the right making more products e. the equilibrium would shift to the left making more products
Calculate the percent ionization of 8.0×10?3 M butanoic acid in a solution containing 8.0×10?2 M sodium butanoate
The Ksp of the imaginary compound AB is 1.6 * 10^-53. How many liters of water should it take to dissolve one molecule of this compound
If the cylinder is full of air at 72 C and 0.980 atm, how many moles of O2 are present. (The mole fraction of O2 in dry air is 0.2095.)
One student measure the pH of the following three solution (weak base, conjugate acid and buffer). Using this data, please calculate the pKa and pKb (show calculation). a. pH = 8.7 for 0.010 M RNH2 (weak base)
suppose sulfur dioxide reacts with oxygen at 25 degrees celsius.2so2 g o2 g -gt lt- 2so3 gthe equilibrium constant kc
A beaker with 160 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 7.00 mL of a 0.410 M HCl solution to the beaker. How much will the pH..
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