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A mixture containing only AgCl and AgBr weighs 2.00 g. It isquantitatively reduced to silver metal, which weighs 1.30 g.Calculate the weight of AgCl and AgBr in the original mixture.
Calculate the heats of combustion for the following reactions from the standard enthalpies of formation listed in Appendix 3. (?H°f (HgO(s)) = -90.7 kJ/mol and ?H°f (FeO(s)) = -272 kJ/mol.)
these three particles which would require radiation of the lowest wavelenth to excite its electron from the ground state to the second energy level?
A calorimeter contains 17.0 mL of water at 15.0 degrees celcius When 1.40 g of (a substance with a molar mass of 69.0 g/mol) is added, it dissolves via the reaction X(s)+H2O(l)->X(aq)
Write the structural formula of the main organic product for the following reaction between an alcohol, tosyl chloride, and then a nucleophile.
What is the pH of the buffer that results when 12.5 g of NaH2PO4 and 22.0 g Na2HPO4 are mixed and diluted with water to 0.500 L. The acid dissociation constants for phosphoric acid are
What is the uncertainty in the energy of the excited state. What is the percentage uncertainty if the energy is measure from the ground state
What is the major product when p-fluoroanisole reacts with sulfur trioxide and sulfuric acid. If applicable, minimize formal charges via expanded octets
a basketball is inflated to 9.0 psi (pounds per inch) above atmosphere pressure of 14.7 psi ( a total pressure of 23.7 psi). The diameter of the basketball is 10 inches. What is the pressure of the air in the basketball, expressed in atmospheres?
4Al + 3O2 = 2Al2O3 determine the percent yield if 124 g Al2O3 are produced when 3.0 moles of Al are reacted
a bottle contains 225 ml of insulin at a concentration of 50.0 mgml. what is the total mass of insulin in the
Calculate the volume of a balloon at the final temperature if this balloon at temperature of 279K and an initial volume of 2.3L is warmed to 406K.
When 2.00 g of hydrazine decomposed under constant-pressure conditions, 7.00 kJ of heat were transferred to the surroundings. What is delta H for the following reaction? 3 N2H4(l) --> 4 NH3(g) + N2(g)
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