To Conduct Demonstration: Display five 250mL beakers with 50mL of Fe(NCS)2+ solution. Reserve one as a reference. Add 0.1M Fe(NO3)3 solution to beaker #2. The color should become more intense as more ...

Two dry solids --- barium hydroxide and ammonium nitrate --- are mixed to produce an endothermic reaction. The temperature of the mixture drops approximately 45oC and is cold enough to freeze the ...

This is the law of conservation of mass. In both examples, the reactants and products stay in the beaker. The total mass of the beaker and the substances it contains stays the same during the ...