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During photosynthesis, an electron is believed to travel 25 Angstroms within one picoseconds. The uncertainty in time measurement is 0.5ps. Given the speed at which the electron is traveling and the short distance, this may seem as a violation of the Uncertainty Principle. Calculate the uncertainty in the distance of the electron (in Angstroms) at any point during its 25 Angstrom journey.
Suppose 10.0 g of CH4 is used in a reaction that can theoretically produce 95.8 g of CCl4. What is the percent yield of CCl4 if the reaction produces only 80.0 g of CCl4.
A 10mL aliquot of this solution, diluted to 25mL, yielded a signal of .235 units. A second 10 mL aliquot was spiked with 10mL of 1ppm standard solution of the analyze and diluted to 25mL. The signal for the spiked sample was .502 units. What is th..
Which of the following compounds would you expect to be ionic?
What is the concentration of the HNO3 solution? (b) How many moles of NaOH were in excess after the first addition?
For the reaction for the formation of NaClO (below) , if you have 1.23 mol NaOH and 1.47mol Cl2, which is the limiting reactant? How many moles of NaClO could be obtained?
A chemical reaction releases 58,500 J of heat into 150 g of water. Assuming no heat is lost to the surroundings
a galvanic cellnbsp is set up at the temperature od 298 k using the given reaction fe fe2 0.10 m cd2 0.95 m cd
Calculate the apparent molecular weight of the unknown hydrocarbon on the basis of the freezing-point depression experiment.
The calorimeter contains 1.00 kg of water (heat capacity of H2O = 4.184 J/g°C) and the heat capacity of the empty calorimeter is 0.10 kJ/°C. How much heat is released per gram of oil shale when it is burned?
A certain substance has a molar heat of vaporization of 31.6 kj/mol. How much of the sunstance is in a sample that requires 57 kj to vaporize.
Acid rain over the Great Lakes has a pH of about 4.5. Acid rain over of the West Coast has a pH of 5.3. How many times more concentrated is the acid in rain over the Great Lakes?
Given the following bond enthalpy values, calculate the enthalpy of formation for gas phase isopropanol, C3H7OH at 25 °C.
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