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A 2.90-mol of N2 occupies 75.0 L at 0.95atm and 26 deg Celsius. Explain what volume will be necessary to contain a mixture of 1.45 mol of N2 and 1.45 mol of O2 at the same pressure as well as temperature?
A 100.0 g sample of water at 90.°C is added to a 500.0 g sample of water at 10.°C. Calculate the final temperature of the water.
How do you solve this? what formulas do you need? how do you go from n=3 to n=5? what frequency of light is required to cause an electron in the helium ion (He+) to undergo a transition from level n=3 to level n=5?
Match the detector or detectors that can be used in gas chromatography for the detection of the following list of analytes. (More than one detector may be appropriate for a given analyte, and a given detector may be appropriate for more than one g..
The density of silver is 10.5 g/mL. What is the mass (in grams) of a piece of silver with a volume of 23.6 mL
starting with a 0.1 M solution and making a series of 1:100 dilutions, how many dilutions must you make to prepare a solution, that on average, has fewer than one molecule of solute per liter of solvent
Taking into account the existence of any lone pairs of electrons, what is the approximate geometry of electron groups surrounding the central Cl atom in the perchlorate ion (ClO4-)
zinc metal is added to hydrochloric acid to generate hydrogen gas and is collected over a liquid whose vapor pressure
The engine stops working when the temperature of the hot reservoir has been lowered to TC. Show that the amount of work done by the engine is W = C1(TH-TC) - C1TC ln (TH/TC).
Calculate the molarity of a solution of glycerol made by dissolving 63.000 glycerol at 15 in enough water to make 300.00 of solution.
Write a partial decay series for {\rm Th}-232 undergoing the following sequential decays: \alpha , \beta , \beta , \alpha . Part A \alpha -decay Express your answer as a nuclear equation.
sodium carbonate is a reagent that may be used to standardize acids and bases in the same way that you have used khp in
either through the formation of a single molecule or by bonding to another atom of similar electronic geometry and results in an arrangement of orbitals that is possible within the valence shell of an atom
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