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Positronium consists of an electron and a positron (same mass as electron, but opposite charge)orbiting around their common center of mass. The broad features of the spectrum are thereforeexpected to resemble those of hydrogen, the differences arising largely from the mass relations. At which energy will the first three lines of the Balmer series of positronium appear?
A pressure measuring device indicates that the blood pressure of a normal person oscillates between 120 mm Hg (at the peak of the heartbeat) and 80 mm Hg (between heartbeats).
A coffee cup calorimeter is being used in this lab despite the fact that one of the reactions produces gas. Calculate the work done using the information
How many moles of carbon, hydrogen and oxygen atoms does a mass of 32.5grams of sugar represent? How many atoms of each type are there in this mass of sugar?
A cubic box with sides of 20 cm is closed and sealed in Tucson where the atmospheric pressure is 90 mbar. It is driven to the top of Mount Lemmon where the pressure is reduced to 745 mbar. What is the net force on the lid of the box due to the air
The Clear solution is evaporated to half its volume and 12 more drops of 6M hydrochloric acid is added followed by the addition of water until the solution's volume is 2mL. To this solution 1mL of thioacetamide solution added and when the test tub..
Calculate the pH of a solution that is prepared mixing 2.16 grams of propanoic acid (74.08 g/mol) and 0.56 grams of NaOH (40.00 g/mol) in enough water to make 100.0 mL
A twenty seven (27) milliwatt LASER is being used in surgery. An inexperienced physician inadvertently directs the LASER at a nearby wall that is 4.1 meters away. If the emergent beam diameter is 1.1 cm
Predict the order for increasing binding energies of the C(1s) electron for the following compounds giving your reasoning.
The vapor pressure of the liquid SO2 is measure at different temperatures. the following vapor pressure data are obtained.
vitamin tablet contains 125 mg of vitamin C (C6H8O6). How many vitamin C molecules are contained in the tablet?
Octane is a liquid component of gasoline. Given the following vapor pressures of octane at various temperatures,estimate the boiling point of octane in Leadville, Colorado, where the atmospheric pressure is 496 mmHg.
Using (delta)Hof and So values, calculate the equilibrium constant for the reac¬tion of nitric oxide (NO) and oxygen to form nitrogen dioxide at standard temperature. Also, Is that above reaction impacted by increases in temperature
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