The number of atoms in 1 dm3 of aluminum is nearly the same as the number of atoms in 1 dm3 of lead, but the densities of these metals are very different (see table 1.5). explain

Acompound has a molecular weight of 12.124 atomic mass units and the empirical formula c3h40. what is the molecular formula of the compound?

Why does a plastic bottle that is sealed at a high altitude change it’s shape when taken to lower altitude

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.