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A hot sample of unknown material is placed into a calorimeter containing 42.1 g of water at [tex]$22.0^{\circ} C$[/tex]. The final temperature of the water is [tex]$62.7^{\circ} C$[/tex]. The specific heat capacity of water is [tex]$4.184 \, J / g ^{\circ} C$[/tex].
What is the heat change for the water?
[tex] q _{ H _2 O } = \, [?] \, J [/tex]
Enter either a + or - sign AND the magnitude.
Sagot :
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