Answer:
Daltons
Explanation:
The unit used to measure weighted average atomic mass is the Atomic Mass Unit (amu) which is also known as Daltons.
Answer:
The answer is A)
Explanation:
An ionic compound is formed when one atom donates one or more electrons to one or more atoms of another element. Calcium has two valence electrons, which are donated to an atom of oxygen. So, an ionic compound is formed in the reaction involving one calcium atom with an oxygen atom.
Velocity would be an answer
The work done by a system kept at constant pressure is given by:

where
p is the pressure

is the final volume

is the initial volume
If we plug the numbers given by the problem into this equation, we find

And since

, we have that the work done is