Ametal sheet 7.5 mm thick with an area of 0.5 m2 has a temperature gradient applied across it, with the temperature on one side of the sheet fixed at 150 oc and the other at 50 oc. after a time, steady-state heat conduction is achieved. (a) plot and calculate the temperature gradient at steady state (b) add an arrow to your plot to indicate the direction of heat flow (c) calculate the heat loss through the sheet per hour if the sheet is made of aluminum (k=247 w/mk) and if the sheet is made of copper (k=398 w/mk). (d) imagine that the boundary conditions on the temperature are removed. what will eventually happen to the temperature gradient through the metal sheet? draw your answer on top of your plot from (a).

the only liquid elements at standard temperature and pressure are bromine (br) and mercury (hg). although, elements caesium (cs), rubidium (rb), francium (fr) and gallium (ga) become liquid at or just above room temperature.

explanation:

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.