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Balance the subsequent equation and choose the quantity which is the sum of the coefficients of the reactants and products.
copper(II) sulfate + potassium iodide ? copper(I) iodide + iodine + potassium sulfate
12
11
13
10
9
At 100 C the equilibrium constant for the reaction COCl2(g) ?? CO(g) + Cl2(g) has a value of Kc = 2.19 X 10 ^-10. Are the following mixtures of COCl2, CO, and Cl2 at 100 C at equilibrium? If not, indicate the direction that the reaction must proce..
a spherical ballon with a diameter of 6m is filled with helium at 20c and 200kpa. determine the mole number and the
Assume that the buret represenst H+ ions, the flask represents OH- ions, and you are carrying out a titration of the base with the acid.
Calculate the number of grams of alcohol present in 1.00 L of 78 proof gin. The density of ethanol is 0.798 g/mL.
Calculate the reversible work required to transport 1mol of K+ from a region where CK+=5.25 mM to a region where CK+=35.5 mM if the potential change accompanying this movement is ?f = 0.055 V. Assume T = 298 K.
It required 105 s for 1.0 L of the gas to effuse. Under identical experimental conditions it required 31 s for 1.0 L of O2 gas to effuse. Calculate the molar mass of the unknown gas.
the concentration of a dye and concentration of bleach naoh was determined experimentally by using beers law. the rate
An imagnary element Xz conists of two isotopes having massess of 100.00 amu and 102.0 amu. A sample of Xz was found to contain 75.0% of the 100xz isotope and 25.0% of the 102xz. Calculate the atomic weight of Xz
what metal cations form sulfide precipitates in basic solution in qual scheme after the above cations have been removed. Qualitativley explain, why the pH of the sulifide solution effects which cations precipitate.
what is the wavelength of the line in the Balmer series of hydrogen corresponding to the transition for n=5 to n=2? the constant for Balmer's equation is 3.2881*10^15 s-1
a 0.100l sample of a solution containing an unknown concentration of sodium hydroxide requires 22.7 ml of 1.00 m
consider the following unbalanced reaction.p4s f2g pf3gwhat mass of f2 is needed to produce 113 g of pf3 if the
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