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State the balanced net equation for the reaction that takes place when 0.1 M solutions of potassium sulfide and chromium (III) chloride are mixed.
Molecule X has an absorbance of 0.287 at 247nm when a 7.67 x 10^-5 M solution is measured in a 2.25 cm cell. What is the molar absorptivity of X
How can you estimate the pH range of an indicator's color change. why do some indicators have two separate pH ranges.
-Calculate the number of mmol of Br2 present in 0.48mL of bromine solution, -Calculate the number of mmol in 100 mg of trans-cinnamic acid (use a MW calculated to 2 decimal places)
When a solution of magnesium chloride is electrolyzed, redlitmus turns blue and a gas is evolved in the cathode chamber. Whatis the cathode reaction
What are the signs of Hvap and Svap for water. Do you expect the signs of these quantities to be the same for other liquids. Explain.
benzoic acid in water is 6.8g per 100ml at 100 degrees c, and .34 per 100ml at 25 degrees c. calculate the minimun volume of water needed to dissolve 1.00g of benzoic acid.
A reaction is preformed in aqueous solution, and the temperature of the solution increases by 15.78 degrees celcius. Is the reaction exothermic or endothermic?
what is the total pressure in of the mixture after it is placed in a container one-half the volume of the original
For the following battery: Cd(s) | CdCl2(aq) || Cl-(aq) | Cl2(l) | C(s) Write the reduction half-reaction occuring at the C(s) electrode. (Include physical states of reactants and products.) From which electrode will electrons flow from the batter..
Assume equal concentration rank these solution by PH : HBrO(aq), Sr(OH)2 (aq)
A certain reaction with an activation energy of 165 kJ/mol was run at 485 K and again at 505 K. What is the ratio of f at the higher temperature to f at the lower temperature
determine what is the vapor pressure of a solution made by dissolving 65.4grams ammonia in 259 grams of h2o at 55.0
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