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What is the nuclear binding energy per mole if the mass defect of a certain isotope is 0.4941 u per atom or 0.4941 g per mol? Express your answer in joules. Remember to use self-consistent units.
calculate teh PH of 2.0m NaCN. what is the concentration of HCN in the solution?
What is the percent recovery of caffeine from tea leaves in the procedure here? Compare the amount of caffeine isolated to the mass of the tea leaves.
The concentration of carbon in a carbon-metal alloy is found to be 4.73x10^1 kg/m3. It is also known that the concentration of carbon in wt% in the alloy is 1.318x10^0 .
Titrated with 0.10 M HBr. Determine the pH of the solution after the addition of 400.0 mL HBr.
Consider the following electrochemical cell at 298 K. One compartment contains a 1.00-M solution of silver nitrate. The other compartment contains a saturated solution of silver iodide
Concentrated ammonia is added to an aqueous solution of copper(II) sulfate. Initially, a white precipitate forms. As more ammonia is added, the precipitate dissolves and the solution becomes a deep bluish-purple
how much NaCl is present in one serving (105g ) of chips? Express your answer to three significant figures and include the appropriate units. (in grams)
How many grams of sucrose must be added to 552g of water to give a solution with a vapor pressure 2.o mmHg less than that of pure water at 20 celsius?
Twenty grams of liquid mercury at 98.0 °C is placed in 47.0 g of water initially at 25.0 °C. What is the final temperature of the water, assuming the styrofoam calorimeter absorbs no heat at all?
In either of the simple distillation experiments, can you account for the boiling point of your product in terms of the known boiling points of the pure components of your mixture?
Two beakers containings different buffer solutions of lactic acid/lactate (CH3CHOHCO2H/CH3CHOHCO2- or LacH/Lac-) and quinhydrone are prepared.
A equilibrium mixture of H2,I2, and HI at 458C contains 0.110 mol of H2, 0.110 mol of I2, and 0.761 mol of HI in a 5.00 L vessel. What is the equilibrium partial pressure of H2 when equilibrium is reestablished following the addition of 0.100 mol ..
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