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Sagot :
Answer:
8.28kJ
Explanation:
We'll use our formula for specific heat Q=mcΔT.
Q= heat (Joules), m= mass (grams),
ΔT= change in temperature (Final temp.- initial temp.)
1. We're solving for Q because we're looking for energy in the form of heat.
Let's plug in what we know.
Q=(89g)(2.01 J/g C)(26.8C- (-19.5C))
Q=(89g)(2.01 J/g C)(26.8 + 19.5)
Q=(89g)(2.01 J/g C)(46.3 C)
Q=8283 J
2. Let's check our units first before submitting our answer, they're asking for it to be in kilojoules so we'll convert J -> kJ.
1000 Joules = 1 kJ
8283J x [tex]\frac{1 kJ}{1000J}[/tex] = 8.28 kJ
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