Physical because you can see it evaporate have a great día
Because mass is not always the same for objects made from the same material. Just because an object has the same mass as another doesn’t mean they are the same material.
Isomers, when its the same chemical formula, but rearranged differently.
I think it’s 44.6 J, but I’m not to sure so hoped this helped /:).
The atomic mass on the periodic table represents the sum of number of protons and number of neutrons.
Atomic mass = Number of protons + number of neutrons
Hope this helps!
