Answer:
magnesium chloride (no prefixes)
This immense mountain range began to form between 40 and 50 million years ago, when two large landmasses, India and Eurasia, driven by plate movement, collided. Because both these continental landmasses have about the same rock density, one plate could not be subducted under the other.Mar. 9, 2015
Answer:
halving, the mass of planet X and halving the distance between the planets
A chemical substance that gains or accepts electrons from others is called lewis acids. The Lewis acid in the reaction is Trihydridoboron 
<h3>What are lewis acids and bases?</h3>
For the formation of the covalent bonds the molecule or the atoms that accept or gain an electron from the other species present in the reaction are called lewis acids. The species formed after accepting electrons are called a conjugate base.
The species that donates electrons to the other species are called lewis base and the species formed after the electron donation is called a conjugate acid.
Therefore, option B.
is the lewis acid as it gains an electron.
Learn more about lewis acids here:
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