Help with basic thermodynamics equation (feel like I'm missing something)

AI Thread Summary
To calculate the time required to heat water from an initial temperature to a final temperature, the specific heat capacity equation Q=mcΔT is essential. The user needs to convert the water mass from pounds to kilograms for accurate calculations. With a continuous power source of 720 watts, the total energy required can be determined using the specific heat capacity of water. The discussion emphasizes the importance of accounting for unit conversions and applying the correct thermodynamic principles. Understanding these factors is crucial for accurately estimating heating time.
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I want to heat a small reservoir filled with water. I want to find out how long it will take to heat the water from a specific temperature to a specific temperature.

random example.
The continuous power source is 720 watts
The Initial temp is -40c
The Final temp is 70c
No heat loss.
Water amount: 2lbs (I must convert to kg?)

Am I missing anything like conversion? What equation am I working with?
 
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Guessing you want the specific heat capacity eqn Q=mc delta t

You do need to convert to Kg
 

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