What is FALSE about nitrogen gas and carbondioxide? 1- Both are compounds

2- Both are gases

3- Elements in both substances are non-metals

4- Both are made up of atoms

Which statement is true about ionic compounds?

How many molecules are in 6.0 moles of methane

What does the field of thermodynamics relate to a-changes in nuclear reactions b- changes in energy in systems c changes in molecular structure d changes in atomic properties