Question

0 8 Chem1311NW-FinalExam-5p2020 (1) - Word Search Sign in insert Draw Design Layout References Mailings Review View -12 - A Times New Roman A A A Help - = - = A = AaBbce AaBbCd AaBbce No Spac... Heading 1 Editing BIU 1 Normal A- 2 - A Font Paragraph 014. In the following combustion reactions, how many kilojoules (kJ) of energy are produced when 300 grams of oxygen gas, O3, reacts with excess ethanol? (Hint: Mole Energy Ratio CH.O(ag) + 30 (g) 2CO:(9) + 3H2O(g) AH = -1368 kJ El Paso Community College a) 2825 kJ b) 2825 kJ c) 4275 kJ d) 4275 kJ 015 How many kilocalories (kcal) of energy is required to raise the temperature of a 225 kg sample of helium gas from -10 °C to 25 °C? Heat Mass x SH X AT] (SH of Helium = 5.23 J/g °C) & (1 cal = 4.184 J) words 1 English United States here to search Obeats

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Answer 1

I MW go a HG 0 + 302 2002 + 3H2O escens OH = -1368 kJ when 3 mol of Oz reacts heat O produced a 1360 KS do 3% (16x2)=448. gxywm- of Oz gas more 15) (1sxly O2 gives heat a 1368 kJ = 19 - 348K2 KS do 300 gram of Or will give ( 300) ks : 4019 4275 kJ heat OHS-4275 KS