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Calculate the pH of a buffer solution prepared by dissolving 0.20 mole of cyanic acid (HCNO) and 0.80 mole of sodium cyanate (NaCNO) in enough water to make 1.0 liter of solution. Ka(HCNO) = 2.0 x 10-4
Enter the simplest molecular formula for cyclopropane given that one molecular formula is (CH2)3. Enter formula in form of Cx Hy.
What other substance(s) found in chocolate bear(s) a strong structural resemblance to caffeine? Draw the structures of these substances and point out the similarities.
the structure Y---X---Y (2 lone pairs around X) could be abbreviated as XY2Z2. Classify these structures according to their shape.
a certain monoprotic weak acid with ka 6.8 times 10-7 can be used in various industrial processes but is no longer
a 0.831-g sample of so3 is placed in a 1.00-l container and heated to 1100 k. the decomposes to so2 and o2
Sodium carbonate reacts with silver nitrate to produce sodium nitrate and solid silver carbonate
The isomerization of methyl isocyanide, CH3NC ? CH3CN, follows first-order kinetics. The half-lives were found to be 161 min at 199°C and 12.5 min at 230°C. Calculate the activation energy for this reaction.
Describe how you would prepare the buffer solution using one of the weak bases listed in the Table below and any other necessary reagents.
what is the concentration of H2 in the water in grams per milliliter? (See Appendix G in your textbook for the vapor pressure of water.)
A 12-gram mixture of methane, CH4, and ethane, C2H6, is completely combusted in oxygen. If the total mass of H2O produced is 23.4 grams, what was the approximate mass of the methane in the original mixture
Cyclopropane (C3H6) reacts to form propene (C3H6) in the gas phase. The reaction is first order in cylclopropane and has a rate constant of 5.87*10^-4/s at 485 C.
consider radiation of wavelength of 8000 Angestroms, at a temprature of 1000 K. using a planck law, calculate the energy per unit volume
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