One hundred kg/h of a mixture of benzene (b) and toluene (t) containing 40% benzene by mass is separated by distillation into two fractions. the mass flow rate of benzene in the top stream is 28 kg b/h and toluene in the bottom stream is 48 kg t/h. the operation is at steady state. calculate the unknown component flow rates in the output streams. draw and label!

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;

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.