How much energy is required to raise the temperature of a 300.0 gram block of lead from 22.3°C to 59.9°C? The specific
heat of lead is 0.129 J/gºC.
Round your answer to the nearest whole number.

Q = 1455 J

Explanation:

Given data:

Mass of block = 300 g

Initial temperature = 22.3 °C

Final temperature = 59.9°C

Specific heat of lead = 0.129 j/g.°C

Energy required = ?

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = T2 - T1 =  59.9°C - 22.3 °C

ΔT = 37.6  °C

Q = 300 g × 0.129 j/g.°C ×  37.6  °C

Q = 1455 J

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.