The first one is going to be b and the second one is going to be a
Answer:
c
Explanation:
because it helps in chemical reactions
The NH3 molecular geometry (molecular shape) is trigonal pyramidal. The NH3 bond angles are 107 degrees because the hydrogen atoms are repelled by the lone pair of electrons on the Nitrogen atom.
Answer:
Number 4
Explanation:
4. It conveys the right branch of the atriventricular bundle.
This part of the heart is found in the right ventricle and it is important because it carries part of the right bundle branch of the atriventricular bundle of the conduction system of the heart to the anterior papillary muscle and it is also used by radiologists etc to easily identify the right ventricle.
