Methane (CH4) is a common fuel to heat homes in the winter. What is the molar enthalpy of combustion of methane? Assume this combustion occurs entirely in the gas phase. Bond Enthalpies(in kJ mol−1):C−C: 347 C−H: 413 H−H:432 O−H: 467 C=C: 614C=O: 745O=O: 498 A)−710kJ mol−1
B)−297 kJmol−1
C)−1843 kJmol−
1D)+792 kJmol−1
E)+567 kJmol

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the major pests we deal with are insects, weeds and fungal diseases. a pesticide is a product, whether organic or chemical, used to kill the target pest. there are other techniques gardeners should use that can prevent the severe infestations that make the use of pesticides necessary

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.