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If a 3.37 - g peanut is burned in a bomb calorimeter containing 1.629 g of water. The temperature of the water raised from 23.57 Celsius. Compute the energy released per gram of peanut?
The acid ionization constant of Fe(H2O)62+(aq) is 3E-6. Compute the pH of a 0.2 M aqueous solution of Fe(NO3)2. 5. Compute the solubility of Mg(OH)2 in a buffer solution at pH=10.31. The solubility product of magnesium hydroxide is 1.2E-11
Zinc metal reacts with excess hydrochloric acid to produce hydrogen gas according to the following equation: Zn(s) + 2HCl(aq) ZnCl2(aq) + H2(g) The product gas, H2, is collected over water at a temperature of 25 C and a pressure of 755 mm Hg
Draw all possible stereoisomers for each of the following compounds. If no stereoisomers are possible, only draw one structure. (All hydrogen atoms are implied. If a chiral carbon atom is attached to a hydrogen atom
Calculate the pH of a buffer formed by mixing 60. mL of 0.13 M lactic acid with 86 mL of 0.26 M sodium lactate.
Compound A reacts with water to give dimethylmalonic acid and with methanol to give the monomethyl ester of the same acid. (Compound A was unknown until its preparation in 1978 by chemists at the University of California, San Diego.)
Predict what amount in grams this double replacement reaction when 40ml of Potassium Iodide Pb(NO3)2 (aq) + 20 ml of Lead(II) nitrate 2KI (aq) combine to make --> 2KNO3 (aq) + PbI2 (s) . What is the predicted amount of PbI2 (precipitation)
A mixture consisting of 50 grams ethanol and 50 grams water is distilled using an efficient column. How much water will remain in the distillation flask the instant all of the azeotrope has distilled?
How much solute would be left (in percent) if you used all of the methanol at once. (assume 100.0 ml for the initial volume containing the solute)
Averge frequency of light emitted a 100 w lightbulb is 5.5x10^14 Hz. How many photons per second does the light bulb emit?
If 8.19g KIO3 is dissolved in enough water to make 500.0mL of solution, what is the molarity of the potassium iodate Soution. the Molar mass of KIO3is 214g/mol
After adding the two portions of water into your calorimeter setup and following the procedure outlined in the experiment, you determine the temperature of the mixed portions of water to be 45 oC. What is the heat capacity of the calorimeter. Assu..
In the titration of ascorbic acid with potassium iodate in the presence of potassium iodide, what happens when an excess of potassium iodate
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