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If an electrical current of 445 mA is passed through an electrochemical cell for 30.2 minutes, what charge, in coulombs, is transferred through the cell?
Charge passed through cell = C
If the charge calculated in the first part of this question is passed through a cell constructed of copper electrodes immersed in an acidic solution of copper sulfate (0.5 M CuSO4/0.1 M H2SO4), what mass of copper, in mg, will be deposited on the cathode?
Mass of copper deposited on the cathode = mg
what is the standard free energy change for thisreaction? Substance ?G°f (kJ/mol) CH3CH2OH(l) - 174.9 O2(g) 0 CO2(g) -394.4 H2O(g) -228.6 Express the free energy change inkilojoules using five significant figures. ?G° = ? kJ
A mixture of Ar and N2 gases has a density of 1.416 at STP. What is the mole fraction of each gas?
if 6.73 g of NaCo3 is dissolved in enough water to make 250. mL of solution what is the molarity of the sodium carbonate ?
To construct a detailed sequence of reactions to synthesize 4-cyclohexyl-3-methyl-1-butanol as the MAJOR substrate product.
A solvent for an industrial process requires the use of phenol or benzene. Both are about the same in effectiveness for the process, and of course, gloves will be used when handling either solvent
At 700 K, the equilibrium constant, Kc, for the reaction H2 + I2 2 HI is 49.0. How many moles of H2 would have to be added to 1.00 mole of I2 in a 10.0-L flask to get a 90.0% yield
pure nitrogen can be prepared when an aqueous solution of ammonium nitrite decomposes to form water vapor and nitrogen gas. How many grams of ammonium nitrate must have reacted if 3.75dm3 of nitrogen gas was collected over water at 26C and 97.8 kP..
If 25.0 mL of NO2 gas is completely converted to N2O4 gas under the same conditions, what volume will the N2O4 occupy?
How many grams of precipitate are formed when 204 mL of a 0.794 M aluminum sulfate soultion and 301 mL of a 1.48 M sodium hydroxide solution are mixed together?
The citric acid cycle has a catabolic role, oxidizing acetate into CO2 and generating energy, and an anabolic role. Many of the citric acid cycle intermediates serve as precursors for the biosynthesis of larger molecules. Move each of the followin..
A volume of 60.0 mL of aqueous potassium hydroxide(KOH)was titrated against a standard solution of sulfuric acid(H2SO4). What was the molarity of the KOH solution if 24.7 mL of 1.50M H2SO4 was needed? The equation is: 2KOH(aq)+H2SO4(aq)-->K2SO4(aq..
How many grams of sodium phosphate Na3PO4(163.9 g/mol) are contained in 205. mL of a sodium phosphate solution that is 0.194 M in sodium ion Na+?
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