Mghcl14 + H2 = mghclh 16 work needed to solve this problem
Answer:
energy enters and leaves but matter does not
Explanation:
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Answer: a) 
b) 
c) 
Explanation:
Electronic configuration represents the total number of electrons that a neutral element contains. We add all the superscripts to know the number of electrons in an atom.
The electrons are filled according to Afbau's rule in order of increasing energies and thus the electronic configuration:
a) 
b) 
c) 
A) ice wedging
The “water freezing” part should help you get the right answer.