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A sample of propane (c3h8) is placed in a closed vessel together with an amount of O2 that is 2.50 times the amount needed to completely oxidize the propane to CO2 and h20 at constant temperature. Calculate the mole fraction of each component in the resulting mixture after oxidation assuming h20 is present as a gas.
treatment of .25g sample of impure potassium chloride with excess AgNO3 resulted in formation of .2912g AgCl. Calculate the % of KCl in the sample.
what is the mass in grams in 2.28 mol of each of the following: a) N2, b)SO3, c)C3H6O3, d)Mg(HCO3)2, e)SF6. Please use significant figures.
What is the ratio of the rate constants for this reaction when the temperature is decreased from °C to °C?
A student followed the procedure of this experiment to determine the solubility product of zinc(II) iodate, Zn(IO3)2. Solutions of ZN(NO3)2 of known initial concentrations were titrated with 0.200 M KIO3 solutions to the first appearance of a whit..
Titration of the excess unreacted EDTA required 15.9 mL of 0.0220 M Ca2 . The Cd2 was displaced from EDTA by the addition of an excess of CN-.
What is a grain boundary. (Multiple answers can be selected.) 1. A point defect 2. A line defect 3. A two-dimensional interface where the solid structures are different
What is the conversion calculation for M to grams of KBr for the following: What mass of potassium bromide is contained in 135 mL of 0.251 M Kbr solution
1.00 mol of glucose was dissolved in water to form 1.00 L of solution at 298 K and 1 bar. Calculate free energy of mixture. Data for water: density 1.00 g/cm3, molar mass 18.02 g/mol, ?fGo(H2O,l) = -237.13 kJ/mol.
The Starship Enterprise is caught in a time warp and Spock is forced to use the primitive techniques of the 20th century to determine the specific heat capacity of an unknown mineral.
waters heat of fusion is 80. its specific heat is 1.0 and its heat of vaporization is 540. a canister is filled with
an unknown gas has a density of 1.60 g/L at 1.00 atm and 30.5 degrees celsius what is the molar mass of the gas.
What is the OH- in a solution that has a pH of 1.86? Give your answer to 3 significant figures using E-notation (i.e., 1 number before and 2 after the decimal point).
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