Q13. Which fuel is not a fossil fuel? c) natural gas a) coal d) petroleum b) hyd
ID: 875390 • Letter: Q
Question
Q13. Which fuel is not a fossil fuel? c) natural gas a) coal d) petroleum b) hydrogen Q14. The standard enthalpy of formation for glucose [C6H1,ods is -1273.3 kJ/mol. What is the correct formation equation corresponding to this AHF? a) 6C(s, graphite) 6H200g) 6H12060s, glucose b) 6C(s, graphite) 6H2O(l 6H12060s, glucose c) 6C s, graphite) 6H20) 3020) C6H12O6(s, glucose d s, graphite) 6H20g) 3020g) 2060s, glucose Q15. Natural gas burns in air to form carbon dioxide and water releasing heat. CH4(g) O2 (g) CO2 (g) H2O(g) 802.3 k AHO. What minimum mass of CH4 is required to heat 55 g o water by 25 oc? (Assume 100% heating efficiency. a) 0.115 g c) 115 g b) 2.25 x 105 g d) 8.70 gExplanation / Answer
Q13)
Hydrogen is not a fossil fuels .
Fossil fuels are fuels formed by natural processes such as anaerobic decomposition of buried dead organisms.
Q14)
D is the answer
standard enthalpies of formation always calculated at 298K from all the substances from its natural state
At 25 degree C Carbon is a solid subtsance
H2,O2 is a gas
hence D is correct
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