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Calculate the pressure that CCl4 gas will exert at 40 degrees celsius if 1.00 mol occupies 28.0 L, assuming that A. CCl4 obeys the ideal-gas law ; B. CCl4 obeys the van der Waals equation (The van der Waals constants for CCl4 are a=20.4 and b=0.1383)
What weight of glucose in grammes is required to make 675 ml of a 750 mM solution. Glucose Mr = 180.16
A mixture of 70 mole% propane and 30 mole% hydrogen is burned with 30% excess air.
What are the three major buffer systems of the body and what are the chemical equations
1) Which of these electron configurations has the 4F term symbol for its ground state? p3 d3 d4 f2 f3
Calculate the equilibrium constant for the reaction - flask at a certain temperature according to the reaction
compatible combination was titrated with 0.1021M standardHCl. It took 20.97mL to reach the phenolphthalein end point and 42.00mL to reach the bromocresol greenend point.
A sample of helium gas, He, at 22 degrees C and 101.3 kPa occupies a volume of 2.54L. At a constant pressure, what volume will it occupy at a liquid nitrogen tempature of -197 degrees C?
Draw the complete Lewis Dot Structure, and identify for each molecule the shape, the hybridization on the central atom
calculate the heat in joules released by the dissolving salt. Assume that the specific heat of the solution is the same as thar of pure water(4.184J/g- celcius) and that the calorimeter is perfect.
How many liters of carbon dioxide are produced when 5.00x10^23 molecules of oxygen react? How many grams of water are produced if 25.0 L of oxygen gas react?
Each of 2 front tire in the car is filled with a different gas. One tire contains 116g of helium, another tire has 160g of unknown gas. How many times heavier is a molecule of the unkown gas than an atom of helium.
Draw the molecule by placing atoms on the grid and connecting them with bonds. Show the formal charges of all atoms in the correct structure. Include all lone pairs of electrons.
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