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Four atoms are arbitrarily labeled W, X, Y, and Z. Their electronegativities are as follows: W=4.0, X=3.0, Y=2.0, and Z=1.5. If the atoms of these elements form the molecules, WX, WY, XZ, and WZ, how would you arrange these elements in order of increasing ionic bond character
How much heat is liberated when 5kg of coal is burned if the coal is 96.2 % carbon by mass and the other materials in the coal do not react? Delta H of carbon is -394 KJ/mol
Calculate the molar concentration of a solution prepared by dissolving 2.34 g of sodium sulfate (MW = 142) in enough waterto make 250 ml of solution.
write the sybolic representation for the galvanic cell. what would "standard conditions" for this galvanic cell be? If the cell is at standard conditions, determine the cell potential(E cell).
In a titration, 0.0 mL of 0.025 M hydrochloric acid is added to 30.0 mL of 0.030 M ammonia. What is the pH of the resulting mixture?
The vapor pressure of water at 20.0 °C is 17.5 mm Hg. If the pressure of a gas collected over water was measured to be 453.0 mm Hg. What is the pressure of the pure gas
A tightly sealed 5.0 L flask contains argon at 85.2 deg. C and 781 mm Hg. The flask is heated until the pressure is doubled. What it the temperature of the gas
paradichlorobenzene c6h4cl2 is a component of mothballs. a solution of 2.00 g in 22.5 g of cyclohexane boils at 82.39
Draw (in increasing energy ordering) 3 different alkenes derived from the dehydration of 1,2-dimethylcyclohexanol
Rank the solutions from the highest to lowest pH.
a1.15 g sample of dry ice is added to a 765 ml flask containing nitrogen gas at a temperature of 25.0 c and a pressure
what mass of limestone must have dissolved if 3.05x1010 kg of calcium hydrogen carbonate was produced?caco3sh2co3aq-gt
Freon-12 is used as a refrigerant in central home air conditioners. The rate of effusion of Freon-12 to Freon-11 (molar mass=137.4g/mol) is 1.07:1. The formula of Freon-12 is one of following: CF4 , CF3Cl , CF2Cl2 , CFCl3 , OR CCl4 . Which formula..
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