Determine the npsh available when a pump draws water at 30 °c from an outside storage tank (open to atmosphere) whose level is 1.5 m above the pump inlet. the energy losses in the suction line total 0.4 m and the atmospheric pressure is 100 kpa(abs). (b) if npsh, for this pump is 11.1 m, is it safe to operate this pump?

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

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.

може ли да зареждате повече информация, моля

answer: mole of the gas

answer: mole of the gasexplanation: