chem!

A common flaw in calorimetry experiments to determine the molar enthalpy of solution is to have a mass of solute that is inappropriate for the volume of water used resulting in a temperature change that is too small or too large. A temperature change of 5°C to 10°C is a good range. Calculate the mass of NaOH ( molar enthalpy of the solution is – 44.51 kJ/mol ) that should be dissolved into 250 mL of water in order to produce a temperature increase of 7.00°C.
how would I go about and do this question?

heat= molesNaOH*molarenthalpy
but also
heat= masssolution*c*deltaTEMP

set these equal

MoleNaOH*44.51= volumewater*denstiywater*c*10C

solve for moleNaoh and convert to grams.

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asked by bob

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