Answer:
Check out libretexts chemistry
Explanation:
It's basically an online free textbook for lots of subjects
highly recommended
Answer:
C. Yes, because they have a definite composition.
Explanation:
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A. plate tectonics slowly move in what is called Continental Drift, the Earth used to be one continent called Pangea and has shifted ever since.
Answer:
5 000 000 (5 million atoms)
Explanation:
Let us assume that a vanadium atom has a spherical shape.
diameter of a sphere = 2 x radius of the sphere
Thus,
Radius of a vanadium atom = 130 pm
= 130 x
m
The diameter of a vanadium atom = 2 x radius
= 2 x 130 x
= 260 x
m
Given a distance of 1.30 mm = 1.30 x
m,
The number of vanadium atoms required to span the distance = 
= 5000000
Therefore, the number of vanadium atom that would span a distance of 1.30 mm is 5 million.
Answer:
aluminum will lose 3 electrons.
Explanation:
to be stable and losing 3 is easier than gaining 5.
anddd its a metal. :)