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Calculate the pH of the buffer solution that results from mixing 65.0 mL of 0.15 M HCHO2 with 40.0 mL of 0.13 M NaCHO2. The Ka for HCHO2 is 1.8 x 10^-4.
If you used the 9000 kilojoules you expend in energy in one day to heat 51000 {rm g} of water at 23^circ {rm C}, what would be the rise in temperature?
Calculate the concentration of bicarbonate ion, HCO3 -, in a 0.010 M H2CO3 solution that has the step wise dissociation constants Ka1 = 4.3 × 10-7 and Ka2 = 5.6 × 10-11.
A 1.30 g sample of dry ice is added to a 760 mL flask containing nitrogen gas at a temperature of 25.0 degrees Celcius and a pressure of 735 mmHg. The dry ice is allowed to sublime.
Metals Covalently Bonded to Benzene, I've noticed that my book does not mention metals as a possible substituent for mono-substituted benzenes, but it doesn't begin to explain why
If 12.6 grams of iron (III) oxide reacts with 9.65 grams of carbon monoxide to produce 7.23 g of pure iron, what are the theoretical yield and percent yield of this reaction?
A sample of neon gas has a volume of 282 mL AT 160 degrees celsius. The sample is cooled at constant pressure to a volume of 685 mL. What is its new temperature?
Use this information to compare how long it will take to obtain molecular scale mixing of such a gas over i) distance 1*10^-4 m and ii) 10m
If it takes 52 J of energy to warm 7.40g of water by 17°C, how much energy would be needed to warm 7.40g of water by 55 °C
Consider the reaction 2ZnS + 3O2 → 2ZnO + 2SO2. Suppose that you wanted enough O2 to completely react with 500. g of ZnS.
What is the pH at the point during a titration when 30 mL of 0.200 M HCl has been added to 31 mL of 0.0500 M NH3 solution? HCl is strong acid, Kb = 1.8 × 10-5 for NH3.Answer in units of pH.
What ratio of glucose-6-phosphate to glucose would allow the reverse reaction to begin? Please explain fully so I can understand how to do the problem
A student standardized her I2 solution by preparing a solution of 0.0450 g of ascorbic acid (vitamin C) in a 100 mL volumetric flask. She titrated several 10.00 mL samples of the Vitamin C solution
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