Look at your ice to steam problem above. This is the same concept. After you have one of these worked you should be able to follow the template and work the others.
In these problems there are two formulas.
1. When changing T WITHIN A PHASE (i.e., one T in ice to another T in ice or one T in liquid to another T in liquid), the formula is q = mass x specific heat in that phase x (Tfinal-Tinitial)
2. When changing the PHASE (at the melting point from solid to liquid or at the boiling point from liquid to vapor) it is
a. mass solid x heat fusion or
b. mass liquid x heat vaporization.
Those three formulas will take you from any point on the scale to any other point on the scale.
How many joules of energy are needed to change 114 g of water at 16.5°C to steam at 100°C?
1 answer
1 answer