Question

Question #560fe

Answer 1

`"35.453 u"`

Explanation:

The atomic mass of elements on their own are shown on a periodic table. Their unit is unified atomic mass unit `("u")`. Chlorine's abbreviation is `"Cl"` with an atomic number of `17`.

![http://mediashift.org/2011/12/why-we-teach-journalism-to-specialists-instead-of-the-other-way-around349/]()