In a large building, oil is used in a steam boiler heating system. The combustion of 1.0 lb of oil provides 2.4 x 107 J How many kilograms of oil are needed to heat 120 kg of water from 28 C to 100 °C? (Assume that 1 lb = 454 g the specific heat of liquid water is 4.184 J/g °C.)

Express your answer to two significant figures and include the appropriate units. ​

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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