What volume of methane at STP would be required to convert a 2.1 kg block of ice at −20 ∘C to water at 20 ∘C, assuming that no heat is lost? The heat of fusion for ice is 6.01 kJmol−1 . The heat capacity of ice is 2.108 Jg−1∘C−1, the specific heat capacity of water is 4.184 Jg−1∘C−1 and the heat of combustion for methane is 891 kJ.

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.

if it's not useful, feel free to report for mistake in answer.

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.

b) nuclear ive learned that in a pedtrodic table