When Should I Apply ΔH After Calculating Q in Thermodynamics?

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yuh_yuh
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I just need help to understand when to apply ΔH T^T
I understand the difference between ΔH and Q, but when I calculate Q will I always calculate ΔH after it?
 
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Always? , relate at least one situation in which you need to do it.
 
yuh_yuh said:
Summary:: I just need help to understand when to apply ΔH T^T

I understand the difference between ΔH and Q, but when I calculate Q will I always calculate ΔH after it?
Do you know the difference between the definitions of ##\Delta H## and Q?