Experiment of recrystallization of naphthalene
In the experiment of recrystallization of naphthalene,what is the additional step should be added to this procedure to remove impurities insoluble in solvent?
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A 30 gram block of an unknown metal at 86.0oC was dropped into an insulated flask containing approximately 40.0 grams of ice and 30.0 grams of water at 0oC.
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Calculate the amount of energy in kilojoules needed to change 135 of water ice at -10 degrees Celsius to steam at 125 degrees Celsius.
Calculate the heat of enthalpy for the reaction:
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Calculate the number of carbon atoms in 3.8 moles of methane
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