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Using the Bohr atomic model, explain to a 10-year old how spectral emission and absorption lines are created and why spectral lines for different chemical elements are unique. (Do not simply describe how the lines are produced experimentally. Use the Bohr model to explain what is going on with the atoms.)
he 1.00 l at 300. torr ne 1.00 l at 0.527 atm ar 2.00 l at 45.0 kpa. assuming the connecting tubes have negligible
How many moles of water can be produced by 12.5 moles of C4H10 with excess oxygen?
consider a van parked in a lot outside a professional football stadium in atlanta ga on a sunday afternoon. one ounce
Which one of the following expressions describes the heat evolved (Hrxn) in a chemical reaction when the reaction is carried out at constant pressure
Five grams of methane is placed in a bomb calorimeter that contains 315 grams of water at 23.17 °C. After the combustion of methane, the temperature of the water is measured to be 28.33 °C. The heat capacity of the calorimeter hardware is 130 J/?C..
for an alloy that consists of 90 at zn and 10 at cu what are the concentrations a of zn in weight percent and b of cu
suppose a reversible heat pump transfers heat from the outdoors at 0 degrees c to a room at 20 degrees celsius. for
Consider the flask apparatus in the following diagram, which contains 2.00 L of H2 at a pressure of 380. torr and 1.00 L of N2 at an unknown pressure. If the total pressure in the flasks is 300. torr after the stopcock is opened, determine the ini..
A 10.0 mL aliquot of this weak acid solution was titrated with a 0.0498 M NaOH solution. The equivalence point was reached by adding 11.62 ml of NaOH from the buret. What is the molar mass of this unknown acid?
In an experiment to determine the percentage composition of an oxide, the element is allowed to burn in air and the oxide formed is collected. Describe how we can determine the mass of the oxygen in the air that was reacted.
Calculate the fraction of atoms in a sample of argon gas at 400K that have an energy of 10.0 KJ or greater.
If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of helium?
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