Question
Record the amount of heat needed to change phases for water-ice to steam using graphical analysis.
Is there a one accurate amount of heat needed to change phases, I thought it varied depending the problem...
Would the question be asking for the heat needed in my graph that I got in a lab. This is the hypothesis section.
Is there a one accurate amount of heat needed to change phases, I thought it varied depending the problem...
Would the question be asking for the heat needed in my graph that I got in a lab. This is the hypothesis section.
Answers
The question could be related to the lab. Of course, I wasn't there and don't know for sure.
The heat required to change phases is
q = mass x EITHER heat fusion OR heat vaporization.
From that standpoint, yes, it changes with the mass of substance used, in this case it is water, BUT usually it is calculated in J/g or J/mol. The J/g or J/mol number is a constant number and that is what one sees in tables for different substances. I hope this answers your question.
The heat required to change phases is
q = mass x EITHER heat fusion OR heat vaporization.
From that standpoint, yes, it changes with the mass of substance used, in this case it is water, BUT usually it is calculated in J/g or J/mol. The J/g or J/mol number is a constant number and that is what one sees in tables for different substances. I hope this answers your question.
Related Questions
Energy is released when 100kg of steam at 150.0°C and standard pressure changes to water at 60.0°C....
The amount of heat Q needed to turn a mass m of room temperature T_1 water into steam at 100degrees...
1. Given that 50 grams of ice is heated at -20.0 °C to steam at 135.0 °C.
i. Show the graph of the...