Answer:
qreleased = -273J.
Step-by-step explanation:
Hello there!
In this case, according to this calorimetry question, and keeping in mind that the hot substance releases heat to the cold substance which absorbs it, according to:
-qreleased = qabsorbed
In such a wat, since the water absorbs 273 J of heat and no heat is lost, the amount of this measurement released by the metal is:
-qreleased = 273J
qreleased = -273J
Regards!