What is the maximum mass of ethyl alcohol you could boil with 2000 jj of heat, starting from 17 ∘c∘c?

                 Q=mcΔT

Explanation:

c ethyl alcohol = 2400 J/(kg*K)

T boil ethyl alcohol = 78 C = 351 K

T starting = 17 C = 290 K

m=Q/(c*ΔT)

m= (2400 J)/[(2400 J/kg*K)(351 K -290 K)]

= 0.0028g

maximum mass C2H5OH = 13.398 g

Explanation:

∴ Q = 2000 J

∴ Cp C2H5OH = 112.0 J/mol.K

∴ T1 = 17°C = 290 K

∴ T2 = Tboil C2H5OH = 78.4°C = 351.4 K

⇒ ΔT = 351.4 K - 290 K = 61.4 K

∴ m = Q/CpΔT

⇒ mol C2H5OH = (2000 J)/((112.0 J/mol.K)(61.4 K)) = 0.29083 mol

∴ mm C2H5OH = 46.07 g/mol

⇒ mass C2H5OH = (0.29083 mol)×(46.07 g/mol) = 13.398 g

you gotta add the following molecules so we can give u an answer

explanation:

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.