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The first order decay of potassium-40 can be used to date geological samples. The rate constant for the decay of potassium-40 is 5.33 x 10-10 yr-1. What is the half-life of potassium-40?
For each of the following reactions, identify which reactant is the Lewis acid. Select 1 if the first listed reactant is the Lewis acid or 2 if the second listed reactant is the Lewis acid
The indicator dilution method is a technique used to determine flow rates of fluids in channels for which devices like rotameters and orifice meters cannot be used.
the standard enthalpy change for the reaction 2hgl o2g 2hgosis -211kjwhat is the standard enthalpy formation of
If the solubilities of the reactant and product were reversed (i.e. if the product were more soluble), how would you follow the isomerization process
Using curved arrows to show electron movement and bond formation write a reaction mechanism for the acid catalyzed reaction
ice melts at 273.15K with delta H fusion = 6.01 kJ/mol. if the ice mass is 13.8 kg in a swimming pool whose temperature is held at 22.5 degree Celsius. What is the entropy change for melting the ice?
Include the following to provide a balanced description of the reaction:•Examine your product.•Explain what kind of reaction is occurring.
The standard enthalpy of formation of NH3 is -46.0 kL/mol. Compute the thermal energy evolved when 8.0 g of H2 react with an excess of N2.
The same vessel was then tried and filled to the same mark with a solution at 4 degree Celsius .the vessel was now found to weight 20.33gm. What is density of the solution.
The boiling point of the solvent and of the solution and the weight of the solute and solvent. The freezing point of the solvent and of the solution and the weight of the solute and solvent.
Question- A volume of 30.0mL of a 0.470M HNO3 solution is titrated with 0.830M KOH. Calculate the volume of KOH required to reach the equivalence point.
The mass of a beaker is 7.839g. After 7.50 mL of hexane, C6H14, is pipetted into the beaker, the combined mass of the beaker and the heaxane sample is 12.806g. What is the measured density of hexane?
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