5.3 liters of hydrogen, originally at 22 degrees C and 8.79 atm, are heated until a volume of 21.0 liters and a pressure of 4.7 atm is reached. What is the new temperature in
Celsius?

i think its 5049.

i hope this !

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.