In an experiment, a student dissolved 11.75 g of NaNO3 is an unknown mass of water initially at a temperature of 18.6 oC. After all the NaNO3 dissolved, the temperature of the solution was measured to be 12.5 oC. From this data, calculate the mass, in g, of water originally in the container before the NaNO3 was added.
111 was incorrect for me.
