The discussion revolves around calculating the energy required to convert a specific mass of water into steam, focusing on the thermal energy involved in heating and phase change processes.
Some participants have provided attempts at calculations, and there is a focus on ensuring that units are included in the work. While there is no explicit consensus on the correctness of the attempts, guidance on clarity and completeness in the calculations has been offered.
Participants are working under the constraints of a homework assignment, which may limit the information they can use or the methods they can apply. There is an emphasis on understanding the processes of heating and phase change without providing direct solutions.
q=mLvamericanforest said:What formula do you know that is related to heating and/or transforming material from one physical state to another? Those are the two processes which must occur here.
Yes.MaryBarnes said:i attempted the answer:
Q total=mcwΔt+msLf
=8.0kg*4200j/kg*(100°C-25°C)+2.0kg*2.3*106
=7.12*106J
awesome! thanks for the help!haruspex said:Yes.
If you want to make your working letter-perfect, include all units: 8.0kg*4200J/kg/°C*(100°C-25°C)+2.0kg*2.3*106J/kg.