Get college assignment help at uniessay writers Given the cell: Cu(s) Cu2 (0.50 M) I- (0.30 M) I3-(0.15 M) Pt AND I3- 2e- –> 3I- E0 = 0.535 V Cu2 2e- –> Cu(s) E0 = 0.339 V a) What does stand for in the notation? b) What does stand for in the notation? c) Write the ionic half cell reactions for the cathode and anode? d) Write the overall ionic cell equation for the reaction? e) Calculate the voltage of the cell.
The solubility of calcium chromate is 1.56*10-3 g/100mL of solution. What is the Ksp for CaCrO4?
what mass of Na2CO3 is needed to prepare 240ml of a solution having potassium ion concentration of 0.120M?
A calorimeter contains 27.0 of water at 14.0. When 1.40 of (a substance with a molar mass of 68.0 ) is added, it dissolves via the reaction and the temperature of the solution increases to 25.0. Calculate the enthalpy change, , for this reaction per mole of . Assume that the specific heat and density of the resulting solution are equal to those of water [4.18 and 1.00 ] and that no heat is lost to the calorimeter itself, nor to the surroundings.
A solution of ethanol (C2H5OH) in water is prepared by dissolving 78.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution. What is the molarity of the ethanol in this solution?
Calculate the pH of a solution that contains 1.0M HF and 1.0M HOC6H5. Also calculate the concentration of OC6H5- in this solution at equilibrium. (Make approximation)
Trichloraacetic acid, (CCl3CO2H), is a corrosive acid that is used to precipitate proteins. The pH of a 0.050M solution of trichloroacetic acid is the same as the pH of a 0.040M HClO4 solution. Calculate Ka for trichloroacetic acid.
Calculate the pH of a 5.0×10^-3 M solution of H2SO4. (Remember that H2S04 is strong, but HSO4- is weakish acid; use approximation).
Calcium carbide reacts with water to produce acetylene gas, C2H2. CaC2(s) 2 H2O(l) → Ca(OH)2(aq) C2H2(g) Calculate the volume (in liters) of acetylene produced at 31°C and 684 mmHg from 0.035 mol CaC2 and excess H2O.
Get college assignment help at uniessay writers what is the Lewis dot structure for the formula n2s3
n Part A of the experiment, you will need to generate some 0.60 M acetic acid solution by dilution of a stock solution. a. what is the concentration of the stock solution:
If the pressure exerted by ozone,O3 , in the stratosphere is 3.0 X 10^-3 atm and the temperature is 255 K, how many ozone molecules are in a liter?
A gas occupying a volume of 167 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?
when a container is filled with 3 moles of H2, 2 moles of O2, and 1 mole of N2, the pressure in the container is 768 kPa. what is the partial pressure of O2
Write out a detailed flow scheme for the separation of naphthalene, benzoic acid and aniline. You can use H2O, HCl, NaOH and methylene chloride reagent/solvents for answering the question. Note benzoic acid and aniline forms a salt.
how many moles of atoms does 500g bar of gold contain?
a 5.325 g sample of methyl benzoate, a compound found in perfumes, was found to contain 3.758 g of carbon, 0.316 g of hydrogen, and 1.251 g of oxygen. what is the empirical formula? if its molar mass is about 130 g/mol, what is its molecular formula?
Exactly 0.500 g of chromium metal from a solution of Cr3 was deposited in a period of one hour. What is the number of electron moles that passed through the cell forming chromium metal?
Given the reaction: MnO4- 8H 5Fe2 –> Mn2 4H2O 5Fe3 . a) Write the half equation at the anode where oxidation occurs and its E0 value. b) Write the half equation at the cathode where reductino occurs and its E0 value. c) What is the oxidizing agent in the reaction? d) What is the reducing agent in the reaction? e) Calculate E0 for the reaction.
What pressure in kPa will 25.0g of oxygen gas have if 21.3L of it are at a temperature of 32 degrees celsius.
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