Your answer is (4) 4, because the alpha particle is a helium nucleus (either an ion or an ejected particle from alpha decay), and it has a mass number of 4, being consisted of four nucleons, (2 protons and 2 neutrons).
Convert to grams to moles, convert g of water to litres, divide moles by litres = M
That is true, water contains hydrogen and oxygen.
The correct choices are: (2) the particles in the Warner cup has more kinetic energy and (3) if there are two different amounts of the same liquid the temp is a good way to compare thermal energies
If you broke an element down to its smallest particles you would get an atom.
