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In the compounds formed by Li, Na, K, Rb, and Cs with chlorine, how many atoms of Cl are there per atom of the metal? In the compounds formed by Be, Mg, Ca, Sr, and Ba with chlorine, how many atoms of Cl are there per atom of metal? How did this kind of information lead Mendeleev to develop his periodic table?
a jet of water with a velocity v1 striking a vane45 degrees that is moving with a velocity vo. determine the forces
The vapor pressure of ethanol at 34.7 degrees Celsius is 100mmgh, and the heat of vaporization of ehanol is 38.6 kj/ mol. What is the vapor pressure of ethanol in mm Hg at 65.0 degree celcius
Shift equilibrium toward reactants. You will have to write out reaction quotients for before as well as after the dilution.
How many milliliters of a 0.28 M HCl solution are needed to react completely with 8.4 g of zinc to form zinc(II) chloride? Answer in units of mL.
calculate the equilibrium constant for this reaction at 25 C Part II at what temperature is this reaction spontaneous. Br2(I) Br2(g) delta H = 31.0 Kj/mol' delta s = 93.0 J/K.mol
calculate the amount of heat transfered when 24.0 g of CH3OH decompose at constant pressure. delta H is 126.4 kJ
What mass of sucrose (C12H22O11) would you combine with 5.00 x 10 square grams of water to make a solution with an osmotic pressure of 8.55atm at 298 K? (Assume aa density of 1.0 g/mL for the solution).
A 494 mL sample of hydrogen gas was collected over water at 25°C and a pressure of 753 torr. If the pressure of water vapor is 24.0 torr at 25.0°C, what mass of hydrogen gas (g) was collected? Do not enter units with your answer.
volume of 2.25 L at 278 K and 1.01 atm. Calculate the pressure when the volume is 1.95 L and the temperature is 303 K.
Calculate SO (universe) for the formation of 1.00 mol of HCl (g) from gaseous hydrogen and chlorine at 25 OC. Is the reaction spontaneous at that temperature
Explain why is it necessary to recrystallize your product. How do you when to recrystallize a compound. If your product is not completely dry while measuring the mp, it may appear to melt at 100C. Why
Consider a main oil spill in a lake. Amount of oil spilled is 5800.0 kg. We can presume oil and water don't mix. Density of spilled oil is 0.805 g/ml. The length of the lake affected is 350.0 miles as well as width is275.0 miles.
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