Identify which of the following molecules can exhibit hydrogen bonding as a pure liquid. oxalic acid
tetrabromomethane
ethanol
difluoromethane
hydrazine
benzaldehyde
H−Br

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

fe 55.85 g/mol and h2o 18.02 g/mol.

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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