Question

if someone could help me fillinh out the rest of these questions, thank you

Part IV. Energy Sources. Table 6. Experimental Data for the Combustion Selected Fuels. Initial T of Final T of Amount of Heat, q, Run Material Calorimeter Calorimeter Absorbed/Released (°C) (°C) (use signs) (J) Change of Internal Energy, AE (J) 1 Coal 39 20.0°C 30.4°C Ethanol N 3.00 g x 4.184 J/g*C X (30.4-20.01°C = 130.5 J 3.00 g x 4.184 Jlgec x (28.9-20.0) 'C = 111.7J 3.00 g x 4.184 JgC x (34.0-20.0)*C = 175.7J 3g 20.0°C 28.9°C 3 Gasoline 3g 20.0*C 34.0°C 3) Are the previous reactions endergonic or exergonic? Why? 4) Assuming that the term PAV for each of the preceding reactions is less than 10% of the calculated value, which of the combustion reactions was more exothermic and why? 5) Judging by the results of the previous four combustion reactions including wood), which of the chemicals is a better source of energy? Explain your answer

Answer 1

→ 80 ΔΟ + DHR xn AH= Dut (Ang RT. for water, liquid liquid Ang to 19 TH= DE = AH AQ = 130.5J. sq= 111.79 DE= Aq= 175.7J <333 since the temperature of Calooimeteo is locreaseng Calsimeter and DE= 80 AH = tve. 80 AHRxn vel Exergonic <6) if 80 POV ~ 10% of DH DH= (10+1007 Alinital 100 DH = 1.1 DH mitall Reaction -3 is more exothermic o tobom 80 (s) for equal Amant of substance AH of Gasoline > AH coal > Hethanol Gasoline is better source.