Answer:
32(molecular mass has no unit )
Explanation:
(16)(o2)
16×2
=32
Question 1 answer: A
Question 2 answer: H
Question 3 answer: J
Question 4 answer: T
Answer:

Explanation:
Hello!
In this case, since calcium's oxidation state when forming ionic bonds is +2 and sulfur's oxidation state when bonding those bonds is -2, for the required formula we write:

Now, since they have the same charge number, we infer the ionic compound formed when they bond is calcium sulfide:

Best regards!