eperiment to determine the energy change for the dissolving of ammoinum nitrate

heat capacity 228 j/c
intial temp of water 21.6c
final temp of water 16.4
mass of ammonium nitrate 0.250g
The amount of energy involed in this change is ?

Question

eperiment to determine the energy change for the dissolving of ammoinum nitrate 

heat capacity 228 j/c
intial temp of water 21.6c
final temp of water 16.4
mass of ammonium nitrate 0.250g 
The amount of energy involed in this change is ?

anonymous · Answer

@Zale101

anonymous · Answer

i know i have to use the formula nHm=Ct

anonymous · Answer

i have to find H

anonymous · Answer

how do i get Hm? first

mertsj · Answer

What does Hm represent?  Is m a subscript?

mertsj · Answer

What is Ct ?  Is t asubscript?

anonymous · Answer

the formula

anonymous · Answer

when the questions says heat capacity we have to use that formula what my teacher said

mertsj · Answer

What did your teacher say the letters in the formula stand for?

anonymous · Answer

c is heat capacity and t is temperature