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astarmathsandphysics:
The 2.1 g would have melted without the heater

holtadit:
I thought about that too... but the mark scheme says:

using Q=ml  do (2.1-1.3)/4min * 60

If the 2.1 grams melted without the heater in the next 2 minutes why is a total of 4 minutes being used in Q=ml ??

holtadit:
help ?

astarmathsandphysics:
I will read the q again. I only said what I remembered last time I answered this.

astarmathsandphysics:
https://studentforums.biz/index.php/topic,1833.msg36500.html#msg36500

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