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Problem- If gasoline (assume octane) is completely consumed in 1 millisecond at 2000K and 1 atm, its (average) rate of combustion in air exceeds 10^3 mol/m^3/sec.
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The temperature of a gas in a sealed container changes from 20.0 oC to 40.0 oC. If the volume remains constant, the pressure will change from 740 mm Hg to
Compute the ΔH° rxn for the decomposition of calcium carbonate to calcium oxide and carbon dioxide.
For the reaction 2 HCl + Na2CO3 → 2 NaCl + H2O + CO2 what volume of 0.45 M HCl solution would be needed to produce 2.5 L of CO2 at STP
25.00 mL of 0.1000 M chlorous acid, HOCl = O is titrated with 0.1000 M NaOH. Calculate the pH of the solutions when 0.00, 2.00 and 24.00 mL of the titrant was added.
While 25mL of 0.10 mol/L HBr(aq) is titrated with 0.10 mol/L NaOH(aq), explain what is the pH at the equivalence point. Choose an appropriate indicator.
magnesium ions can be precipitated from seawater by the addition of sodium hydroxide. how much sodium hydroxide in
If equal amounts of Na2HPO4 and Na3PO4 are added in water, calculate the resulting pH. The pKa's of phosphoric acid are 2.1, 7.2, and 12.4
the enthalpy of vaporization of ethanol i 43.5 kj/mole at its normal boiling point of 352 k. using avalue of the molar heat capacity of liquid ethanol of 111.46 j/k/mol
Calculate the pH of the solution. Round your answer to 3 significant digits. NaH2PO4(aq) = HPO42-(aq) + H+(aq) Constant Kw=10-14 Ka=6.20×10-8
When 4 g sample of NH4NO3(s) was dissolved in 60 g of water in a coffee-cup calorimeter, the temperature drops from 296 to 291 K.
Give the number of atoms in the unit cell. Assume the structure consists of identical atoms. face-centered cubic a. one b. two c. four d. eight
Is the best description of the t2g orbitals in [CoCN6]3- bonding, non-bonding, or antibonding? Explain your choice.
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