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An unknown gas effuses at a rate that is 0.462 times that of nitrogen gas ( at the same temperature). calculate the molar mass of the unknown gas in g/mol?
Balance the following half-reaction in base, using smallest whole number coefficients. What is the coefficient for OH- in the balanced equation?
Which statement best desrcibes the energy change as bonds are formed and broken in this reaction ?
Phosphorous trichloride (PCl3) is produced from the reaction of white phosphorous (P4) and chlorine: P4(s) + 6 Cl2(g) → 4 PCl3(g) . A sample of PCl3 of mass 298 g was collected from the reaction of 75.37 g of P4 with excess chlorine.
It required 16ml of a sodium hydroxide solution titrated against a standard solution of 0.79g of potassium hydrogen phthalate in water to reach equivalence point. What is the molarity of the sodium hydroxide?
Which of the following is both a decomposition reaction and a reduction-oxidation reaction? a. H2CO3(aq) --> Co2(g) + H2O(l) b. Zn(s) + SuNO3(aq) --> Cu(s) + ZnNO3 (aq) c. Ca(OH)2(aq) + 2HCl(aq) --> CaCl2(aq) + 2H2O(l)
969 ml of gas was collected at 64 degrees celcius and a pressure of 723 mm Hg. Find the volume at STP.
what is the change in pH after addition of 10.0mL of 1.0M sodium hydroxide to 90.0mL oof a 1.0M NH3/1.0M NH4+ buffer? (Kb for ammonia is 1.8 X 10-5)
Our stock solutions are 0.2M EDTA, 0.04 M NaF and 1.2 M potassium phosphate. What volumes of the stock solutions should be measured?
One Step is a product sold as a cleaner/sanitizer and has the formula 2Na2CO3?3H2O2. If 15.175 g of this compound is dissolved in water and diluted to exactly 1 gallon as directed
Identify the reagents for all three steps. Draw the structures of organic compounds A and B.
Calculate the work done in Joules (for each case) when one mole of an ideal gas, initially at P = 9atm, T = 298K is expanded isothermally to P=1atm if
Carbon monixide reacts with steam to produce carbon dioxide and hydrogen. At 700 k the equilibrium constant is 5.10. calculate the equilibrium concentrations of all species if 1.000 mol of each component is mixed in a 1.000-L flask.
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