The mass can be obtained from the molar mass when the number of moles is known.
<h3>What is molecular formular?</h3>
The molecular formlar is the formula of the compound that shows the number of atoms of each element that is present in the molecule. Asprin is a moecule that has the molecular formula C9H8O4.
To use the molecular formula to determine weight, we have to know the number of moles involved.
Mass = number of moles * molar mass.
Learn more about molar mass: brainly.com/question/12127540
Answer: Option B and E
Explanation: No of neutrons (n) = Mass number - Atomic number= A-Z
A. n=1-1=0
B. n=2-1=1
C. n= 3-1=2
D. n= 2-2=0
E. n=3-2=1
F. n=4-2=2
Hence options B and E are correct
Ionic bond I think. It is the only one related to ions.
