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A sample contains Ba3(PO4)2, CdS, AgCl, NH4Cl, and ZnS. Identify the soluble ions after the addition of 6 M HCl; H2S and 0.2 M HCl; OH- to a pH of 8; and (NH4)2HPO4 with NH3. A) Ba3(PO4)2 B) NH4Cl C) CdS D) ZnS E) AgCl
Calculate the molar mass that would be obtained from the actual experimental data under the following conditions. The unknown is methyl propyl ether (CH3OC3H7)
Calculate the volume (in mL) of a 0.740 M KOH solution that should be added to 4.750 g of HEPES (MW=238.306 g/mol, pKa = 7.56) to give a pH of 7.22.
Write the equation for a nonspontaneous reduction-oxidation reaction involving the transfer
The heat of neutralization of HCl by NaOH is H°rxn = -56.2 kJ/mol. How much heat is released when 125 mL of 1.750 M HCl is mixed with 195 mL of 0.667 M NaOH.
Give the systematic names of these compounds. Spelling counts! (a) CuI(s) (b) Fe2O3(s) (c) CoF2(s) (d) FeO(s)
hydrogen and nitrogen react to form ammonia nh3. write the balanced equation and determine how many moles of nitrogen
which of the following compounds is expected to have the strongest ionic bonds. a) RbF b) NaF c) NaI d) CsBr e) CsI
A gaseous fuel mixture stored at 745mmHg and 298 K contains only methane CH4 and propane C3H8. When 11.5L of this fuel mixture is burned, it produces 774kJ of heat. What is the mole fraction of methane in the mixture
The volume percentage of CO2 in a mixture of that gas with N2 was determined by bubbling the mixture at 1.00 atm and 25*C through a solution of 0.0100 M NaHCO3 and measuring the pH. If the equilibrium pH was 6.50, what is the volume percentage of ..
under anaerobic conditions lactic acid builds up due to the following reaction. A) prochiral b) archiral c) chiral d) both archiral and prochiral
You have 500 mL of a 5.0 M solution of nitric acid HNO3 (63.01 g /?mol) dissolved in water. How many grams of nitrogen does the solution contain.
An airplane is pressurized to 650 mmHg, which is the atmospheric pressure at a ski resort at 13000 ft altitude: a) if air is 21% oxygen, what is the partial pressure of oxygen on the plan
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