
Density is defined as Mass per unit volume of an object ~
And hence, the correct choice is ~ 1


Humphry Davy First discovered sodium
Black hole is likely to spin
The enthalpy of atomization (also atomisation in British spelling) is the enthalpy change that accompanies the total separation of all atoms in a chemical substance (either a chemical element or a chemical compound)
Answer:
carbon dioxide
Explanation:
because we breath in oxygen and breath out Carbon