1. From the mass of salt taken and the mass (volume) of water used, and from the temperature change, calculate the quantity of heat that flowed during the dissolving of the NH4Cl and CaCl2.

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

answer; i do believe the correct answer is (river); /// good luck

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.