Answer:
I'd say the correct answer is A
Explanation:
hope this helps:)
sorry if its wrong:(
Answer:

Explanation:
Given
Compound: 
Required
Determine the equivalent mass
In the above compound, we have: 2 Al and 3 (O)
The atomic mass of Aluminium is:

The atomic mass of Oxygen is:

So, the equivalent mass is:



Mass number- number of neutrons= number of protons.
52-27=25 protons.
Number of protons = atomic number =25
It is Mn (manganese).
Question
Which one is more dangerous Ac or Dc how is it?
Answer
AC
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AC has the voltage alternates, it enter and exit from your body without a closed loop.