The initial temperature is that measured in the boiling water. The final temperature of the metal is that measured in the cooling beaker. To Conduct Demonstration Bring an 800mL beaker of water to ...

Placing the bell jar over the bird and beaker of water causes the humidity to approach 100% preventing evaporation and cooling of the head. Consequently, the bobbing stops until the bell jar is ...

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 ...