Answer:
It is the way of cleaning of impurities present in metals
Im not sure but here is some information to help A declarative question is a yes-no question that has the form of a declarative sentence but is spoken with rising intonation at the end. Declarative sentences are commonly used in informal speech to express surprise or ask for verification.
I think it’s 20 mol
Sorry if I’m wrong
Atomic Mass is equal to the sum of the number of protons and neutrons.
Thus the atomic mass = 3 + 4
= 7
If I remember correctly, it would be B. A very large amount of energy is produced from a tremendous mass.
