Question

Question #4c66a

Answer 1

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