Question: 1) Dissolving a substance ( M = 80.05 g/mol) in a coffee-cup calorimeter containing 250 mL of water caused a change of temperature from 22.50

1) Dissolving a substance (M = 80.05 g/mol) in a coffee-cup calorimeter containing 250 mL of water caused a change of temperature from 22.50 C to 19.41 C. If the enthalpy of dissolution for the substance is known to be 28.1 kJ/mol, calculate the mass (in g) of the substance that was dissolved. Given: The specific heat of water: 4.184 J/(g C); density of water: 1.00 g/mL

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