Question

4) An atom of the element ____________has an average atomic mass of about 16 amu. A) oxygen B) sulfur C) nitrogen D) no elements have that mass

Answer 1

I take it your doing the IA? If so you should have a picture of elements above the question. Oxygen is the only one labeled with 16 as the atomic mass :)

Answer 2

Answer:

A) oxygen with an atomic number of 8 with an 99.7% of natural abundance.

Explanation:

• The atomic mass of an element is the average mass of an element that is measured in AMU. Mass is expressed as Daltons.

• Standard atomic weights or mass or the relative isotopic mass of a single isotope is thus tried to that atom. In Order to calculate the atomic mass ad up the protons and neurons. This is usually determined by spectrography.

• However, the volumes of two gases and masses are obtained by calculating it with the hydrogen taken as one and thus carbon is taken as a reference to the determination of atomic masses.