Mass number is the total number of protons and neutrons and atomic number is the number of neutrons.
So you just subtract
Mass number - atomic number = neutrons
(Prot + neut) (Protons)
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➷ The correct option would be petroleum
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Nucleus of the atom, that contains protons and neutrons.
Answer:
b. Pepsin
Explanation:
In the stomach, when dygestion takes place,pepsinogen is secreted in the stomach for the dygestion of proteins, which are catalyzed to aminoacids for the use of the body.
When the pepsinogen gets in contact with the HCl it converts to pepsin, which is the actived form of the pepsinogen.