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The activation energy of a reaction is 57.9 kJ/mol and the frequency factor is {1.5\; \times \;10^{11} }/{{\rm{s}}}. Calculate the rate constant of the reaction at 26^\circ C.
If a 220 mg piece of gold (density =19.32 {rm g}/{rm cm}^{3}) is hammered into a sheet measuring 2.5times1.0 {rm ft}, what is the average thickness of the sheet in meters?
We titrated each layer with 0.10 NaOH and found that 1. took 2.57 mL of NaOH to titrate and 2. took 0.08 mL of NaOH to titrate. What is the concentration of acid in 1 and 2?
The rate constant are 0.039 L/mol-1*s-1for the forward reaction (CO2 + H2O ? H2CO3) and 23 s-1for the reverse reaction (H2CO3 ? CO2 + H2O). What is the order of the reverse reaction
calculate the volume of a 2.50M acetic acid solution that will be neutralized by 15.00mL of a 4.00 M NaOH solution
Calcium hydride reacts with water to give gaseous hydrogen and calcium hydroxide
Minimal energy cost of H2S conversion to hydrogen and sulfur in gliding-arc is 1.6 eV/molec
Write balanced, net ionic equations when the following compounds are mixed. Indicated mixtures where no reaction is expected with the notation no rxn.
Calculate the mass of sodium chlorate that must be decomposed to form 6.5 g of oxygen. 2NaClO3(s) → 2NaCl(s) + 3O2(g)
An aqueous antifreeze solution is 35.0% ethylene glycol (C2H6O2) by mass.
A solution is made by dissolving 18.4g of HCl in 662 mL of water. Calculate the pH of the solution. Assume that the volume of the solution is also 662 mL
When .100 mole of a compound of carbon, hydrogen and nitrogen was burned completely in oxygen 26.4 g of co2 6.30g of h20 and 4.60 g of NO2 were produced What is the empirical formula
Because Ions are more strongly attracted in an ionic compound than molecules are attracted in molecular compounds
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