Answer:
D. atomic mass unit
Explanation:
A unified atomic mass unit is used for measuring atomic mass.
Question
How many moles of Na Cl will be produced from 6.0 moles of HCI?
Answer:
neutrons should be added with the protons
<span>The question says.'which option describes a similarity between isotopes of an element. The correct option is C. Isotopes have the same number of atomic number but different mass number. The mass number is the summation of proton and neutron. The number of proton is always constant but that of neutron changes to reflect the existence of isotopes.</span>
This substance is certainly not gas since gas particles have large spaces between them. This substance is certainly not solid as well since solid particles are closely packed together with very close proximity. This substance is therefore liquid since particles are still close but can move around in a disordered arrangement.