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A reaction is followed and found to have a rate constant of 3.36 x 10^4 M-1S-1 at 344 K and a rate constant of 7.69 M-1s-1 at 219K. Determine the activation energy for this reaction"
What is the expected freezing point of a 0.50 m solution of Li2SO4 in water? Kf for water is 1.86°C/m.
The half-life of nuclium is 12.3 years. If 49.0 mg of nuclium is released from a nuclear power plant during the course of a mishap, what mass of the nuclide will remain after 98.4 years.
Assume that patient blood lead levels are 0.600 mg/L that total blood volume is 5.0 L and that 1 mol of succimer binds 1 mol of lead.
A gas sample containing N2 and O2 was found to contain 72% N2. If the pressure of the sample was 2.0 atm, what is the partial pressure of O2?
Determine the volume of 0.375 mol of C4H10 gas under the same temperature and pressure conditions?
Calculate the molarity of an NH3 solution made up of 37.5 g of NH3 in 70.0 g of water. The density of the solution is 0.982 g/mL
A solution of 0.2113 g of water dissolves in 25.0 g of a solvent which freezes at 11.5 EC below the freezing point for the pure solvent. What is the Kf value for this solvent?
If a sample of pure silver (Ag) contains 3.35 x 1022 atoms of iodine, how many moles of silver are in the sample?
If 18.4 mL of 0.800 M HCl solution are needed to neutralize 5.00 rm mL of a household ammonia solution, what is the molar concentration of the ammonia?
A copper wire (density = 8.96 g/cm3) has a diameter of 0.27 mm. If a sample of this copper wire has a mass of 35 g, how long is the wire?
Calculate the molar mass of a vapor that has a density of 6.735 g/L at 13°C and 825 torr.
Calculate the heat of enthalpy for the reaction: PCl5(g) → PCl3(g) + Cl2(g)
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