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Models do not necessarily have to be physical objects. They can be two-dimensional drawings or even mental constructs. Cite one or more examples of such models encountered outside of chemistry. Can you think of models that are used in your own field of study or that you will use in your future career?
A quantity of gas has a volume of 200.0 liters at 17 degrees Celsius and 3.0 atm of pressure. To what temperature must the gas be cooled for its volume to be reduced to 150.0 liters at a pressure of 2.0 atm?
A solution containing equivalent masses of glycerol (C3H8O3) as well as water has a density of 1.20 g/mL. Compute (a), the molality of glycerol, (b), the mole fraction of glycerol, and (c), and the molarity of glycerol in the solution.
Polonium crystallizes in a simple cubic lattice (the Po atoms are at the lattice points only). If the density of the metal is 9.31 g/cm3, what is the unit cell edge length in pm
State the selection rule for infrared-active molecules. Also, give an example of a molecule that is IR-active and identify an IR-active bond in the molecule, as well as where one would find its transition what frequency
If you start with 15.0 of a 0.900 solution of , and then dilute it with water to 270 , what is the concentration of at equilibrium?
Calculate the magnitude of the current in amperes if the number of moles of hydrogen gas produced is 4.80×10-4 moles.
A 100L container has a 100g of ammonia gas and 50.0g of nitrogen gas at 500 degrees Celsius. Calculate the total pressure inside the container
a solution is prepared by dissolving 197 g sucrose c12h22o11 in enough water to produce 1.20 l solution. what is the
Problem- When solutions of silver nitrate and calcium chloride are mixed, silver chloride precipitates out of solution according to the equation
Which of the following reactions is (are) oxidation-reduction reactions? Explain your answer briefly.
considering the given equation ch4 2o2 co2 2h2o in which methane reacts with oxygen to form carbon dioxide and water
Given a pure preparation of these algae, and the required supplies and equipment, devise and outline an empirical procedure for purifying Enzyme X.
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