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10a. Consider preparing a buffer solution by bubbling 0.64 mols of H3N(g) into 250 mL of 1.28 M HONO2. Calculate [H3O+] and pH for this solution. Show all pertinent work including equations for any B/L A/B reactions which occurred on solution preparation.
b. Now calculate the volume (to two SF) of 0.96 M NaOH which must be added to this buffer to raise pH by 0.60 pH units. Show all pertinent work including equations for any B/L A/B reactions which occurred during the addition of the NaOH solution to the buffer solution. (Hint: The answer is in the range of 150 mL to 300 mL).
c. Finally, calculate pH if the original solution (as made in a) had been treated with 0.62 mols HCL 9g) (rather than the NaOH solution in b). Show all pertinent work. (Note: B/L A/B EQ need not be considered to answer this).
The initial temperature of a 344 g sample of iron is 18.2 deg C. If the sample absorbs 2.25 kJof energy as heat, what is its final temperature
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A proton in a linear accelerator has a de Broglie wavelength of 143 pm. What is the speed of the proton?
A 0.0989 g sample of an alcohol is burn in oxygen to yield 0.2160 g Co2 and 0.1194 g H2o. Calculate the mass percentage of C, H, and O in the compound
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