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The activation energy for the reaction NO2(g)+CO2(g)---->NO(g)+Co(g) is Ea= 325 Kj/mol and the change in enthalpy for the reaction is change in H = -250 kj/mol.
What is the activation energy for the reverse reaction?
A titration experiment is set up to use 0.235M bleach (NaOCl) to analyze CrO2-. If 50.0mL of the CrO2-(aq) solution required 37.75mL of bleach to react to completion, what would you calculate as the molarity of the CrO2- solution
19mg of 9-fluorenone is dissolved in 5ml of diethyl ether. The resulting organic solution is extracted with 10ml of water. The Kp for 9-fluorenone in diethyle ether/water is 9.5, how much would remian in the ether layer?
What mass of water would need to evaporate from your skin in order to dissipate 1.7 × 105 J of heat from your body? H2O(l) → H2O(g) ΔHvap = 40.7 kJ/mol
Amino acids with an additional COOH group in the side chain are called acidic amino acids.
The pressure increases from 1.10 atm to 3.06 atm, and the volume of the sample changes from 2.67 L to 4.57 L. To what temperature, in oC, was the methane heated?
Explain how to prepare 0.250 L of a 0.500 M CuSO4 solution. 1. Measure out 0.500 moles of CuSO4 solid 2. Measure out 20.0 g of CuSO4 solid 3. Measure out 0.500 moles of CuSO4 solid and add water until a volume of 1.0 L is reached 4
Balance the equation in acidic solution and determine how much of a 0.850 M K2Cr2O7 solution is required to completely dissolve 5.25 g Cu.
At 21.0 C, a solution of 18.26 g of a nonvolatile, nonpolar compound in 33.25 g ethyl bromide, C2H5Br, has a vapor pressure of 336 torr. The vapor pressure of pure ethyl bromide at this temperature is 400 torr. What is the molecular mass of the co..
What mass of sucrose (C12H22O11) should be combined with 494 g of water to make a solution with an osmotic pressure of 9.00 atm at 320 K?
A student prepares a weak acid solution by dissolving 0.2500 g HZ to give 100. mL solution. The titration requires 30.0 mL of 0.1025 M NaOH
A sediment sample of clay was equilibrated with ammonium ion (NH4+). The ammonium ion was then displaced with Na+. The total amount of ammonium that had been adsorbed.
If hydrogen gas is collected over water at 20°C and 763 mm Hg, what is the partial pressure of the H2? The vapor pressure of water at 20°C is 17.5 mm Hg.
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