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(a) How much energy is transferred from chemical to electrical form in 4.0 min?

(b) How much energy appears in the wire as thermal energy in that time?

answer to a= 216 (that's correct)

for b, i got 189.629 (that one is wrong though)

For the work, i did: I= 3V/9 = .3333 A

Vtotal= 3V-IR

Vtotal= 3V-.333(1)

Vtotal= 2.6666

p=Vsquared/R

P=2.666 squared/9

P= .79011

.79011 (4) (60) = 189.62