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Caluclate the molecular mass of the compounds of Caffeine and Epinephrine. Round to the hundredth's place.
What is the pH (3 significant figures to the right of the decimal point) of a 0.0500 M solution of sulfuric acid? Remember, the first ionization constant is "large,"
the total pressure of the system is found to be 4.50 atm At 700 degrees celsius. compute the equilibrium partial pressures of carbon dioxide and carbon monoxide if the equilbrium constant Kp = 1.52,
he endpoint of the titration was 9.98mL. Calculate the percent copper in the solid sample.
Explain the difference between the Bohr model for the hydrogen atom and the quantum-mechanical model.
0.1278- sample that is 97.50% As2O3 by mass had been used in the titration, how many milliliters of the 0.02140M KMnO4(aq) would have been required?
The determination of iron in industrial waste stream is often carried out by reacting the water sample with o-phenanthroline to form a red-orange complex that absorbs at 510 nm.
what is the equilibrium partial pressure of water vapor above a mixture of 44.0 g H2O and 56.0 g CHOCH2CH2OH at 35 Degree C. The partial pressure of pure water at 35.0 degree C is 42.2 mmHg. Assume ideal behavior for the solution.
At what concentration does hydrocyanic acid (ka= 4.9 x 10^-10) exhibit 0.05 percent ionization? Assume the temperature to be 25*C
Calculate the numbers of moles of 2-butanol that needed to dissolved in ethenol(125gms) just to form 12 m 2 butanol soln also find out mass of 2-butanol ?
Although the double bond, in total, is stronger than a single bond, the pi bond itself is weaker and can react with electron-deficient species such as a hydrogen ion.
Zinc and sulfur react to form zinc sulfide by the equation shown below. How many grams of ZnS can be formed when 12.0 g of Zn reacts with 6.50 g of S? (Atomic mass: Zn = 65.38, S = 32.06).
which has the same osomotic pressure as blood, can be prepared by dissolving 0.923 g of NaCl in enough water to produce 100.mL of solution. What is the osmotic pressure of this solution at 25 C. But NaCl dissociates into ions
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