7. The 2.2 kg window in Derrick's car heated up to 120'C because it sat in the school parking lot for 7 hours. If the total amount of heat energy gained by the glass is 169401.8 J, what was the initial temperature of the window? (glass - cp = 837 J/kg.C) 7 . 8. DeHaan is on KP. He is heating an iron skillet on a stove in preparation for braising some sirloins for the crew. The temperature of the skillet increases from 23 to 115 degrees Celsius. If the total thermal energy gained by the skillet is 20608 J, what is the mass of the skillet? (iron - Cp = 448 J/kgoC) 8. 9. Although it is 35 degrees Celsius outside, the 10,000 g of water in Lauren's water bottle has only warmed up from 18 to 29 degrees Celsius in the past 6 hours. How much thermal energy does the water gain? (water - Cp = 4187 J/kgoC) 9 . 10. Caroline is boiling eggs to dye for Easter in a 4.4 kg aluminum pan. The pan increases in temperature from 28 to 98 degrees Celsius. How much thermal energy does the pan gain? (aluminum - Cp = 899 J/kg.C) 10