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A solution of MnO2- 4 is electrolytically compact to Mn3+. A current of 7.19 is passed throughout the solution for 15.0 min. Explain what is the number of moles of Mn3+ produced in this process? (1 Faraday = 96,486 coulombs)
Combustion of a 1.50 g sample of a hydrocarbon produces 4.88g of CO2 and 1.5 g H2O. What is the empirical formula
Explain how will decreasing the amount of glucose affect the rate of ATP production by the cells (in moles ATP / hr) if the amount of yeast in the experiment is held constant
How would you find the Ksp of a salt using only molecular weight and solubility?
What concentration of glucose will be isotonic with 1.2% CaCl2 solution? Assume a van't Hoff factor of 2.8 for the CaCl2 solution. The molar masses of glucose and CaCl2 are 180.2 g/mol and 111.0 g/mol, respectively.
If Ice melts at 273.15K with delta H fusion equaling 6.01kJ/ mol. An ice cube whose mass is 13.8 kg is dropped in a swimming pool whose temperature is held at 22.5 degrees Celsius.
The following question refers to a solution that contains 1.79 M hydrofluric acid, HF (Ka = 7.2 x 10^-2) and 3.00 M hydrocyanic acid, HCN (Ka = 6.2 x 10^-10). What is the pH of this mixture of weak acids
estimate the enthalpy change for the combustion of one mole of acetylene c2h2 to form carbon dioxide and water vapor.
An imagnary element Xz conists of two isotopes having massess of 100.00 amu and 102.0 amu. A sample of Xz was found to contain 75.0% of the 100xz isotope and 25.0% of the 102xz. Calculate the atomic weight of Xz
A solution is made by dissolving 0.676 mol of nonelectrolyte solute in 885 g of benzene. Calculate the freezing point and boiling point of the solution. Constants may be found here.
Define how to make sure that the white powder was all sodium chloride and not mixed with sodium hydrogen carbonate, would you require to add a little less or a little more hydrochloric acid to the reaction
Calculate the pH and the pOH of an aqueous solution that is 0.040 M in HCl(aq) and 0.065 M in HBr(aq) at 25°C.
Write an equation for this reaction? which species acts as the nucleophile? Which species acts as the electrophile?
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