Question 3 (1 point) A sample of molten iron is cooled from 3000°C to 2700°C, losing 8200 kJ of heat. The specific heat of iron is 0.444 J/gC. What is the mass of the
sample?
а
Ob
Oc
Od
1092 g
15.0 g
12.14 g
61.6 g

b) nuclear ive learned that in a pedtrodic table

answerspecific gravity;

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.