In a calorimetry experiment, it was determined that a 92.0 gram piece of copper metal released 1860 j of heat to the surrounding water in the calorimeter (qcopper = −1860 j). if the final temperature of the copper metal-water mixture was 25.00°c, what was the initial temperature of the copper metal? the specific heat of copper is 0.377 j/(g°c). group of answer choices tinitial = 28.6°c tinitial = −28.6°c tinitial = 78.6°c tinitial = 92.6°c tinitial = 53.6°c

Tinitial = 78.6°C

Explanation:

In a calorimetry experiment, the flow heat is measured for a system that has a state change. In this case, there isn't happening a physical change, so the heat is called sensitive heat, and it's calculated by:

q = mxCpxΔT

Where q is the heat, m is the mass, Cp is the specific heat and ΔT is the difference of final and initial temperature (Tfinal - Tinitial).

Copper is losing heat, so q is negative, then:

-1860 = 92x0.377x(25 - Ti)

34.684(25 - Ti) = -1860

25 - Ti = -53.63

-Ti = -78.63

Ti = 78.6ºC

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.