Question #4c66a

1 Answer
JuliaKim
Feb 9, 2017

See below:

Explanation:

Using your formula (with a slight correction):
#Q = mc∆t + mLf + mc∆t + mLv + mc∆t#
#Q = (0.025)(2100)(0+15) + (0.025)(3.3 * 10^5) + (0.025)(4180)(100-0) + (0.025)(2.3 * 10^6) + (0.025)(2000)(130-100)#
#Q = 787.5 + 8250 + 104500 + 57500 + 1500#
#Q = 172 537.5 J#
#Q = 170 000 J# with rounding

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