The heat of solution of ammonium chloride (NH4Cl(s)) in water is +14.7 kJ/mol. Calculate the mass (in g) of NH4Cl(s) required to change the temperature of (1.2550x10^2) ml of water from (2.440x10^1) °C to (5.30x10^0) °C. Assume that there is no heat loss and that the heat capacity of the solution is the same as that of pure water.
Use data from the textbook. Pay attention to significant figures, keeping in mind that a temperature difference is measured during the experiment. Use scientific notation for your answer. Do not enter units.
Note: Your answer is assumed to be reduced to the highest power possible.