Answer:
A is a physical change, no atoms are being lost its still in it original form
B is a chemical change, it is losing atoms and changing into a new substance
Explanation:
Compound - made out of two or more types of elements chemically combined
Mixture - two or more substances in which the substances retain their identity
Element - simplest form of matter that is present by itself
an Intermolecular bond is the force between molecules.
The formula of citric acid is:
CO2H
|
HO - C - CH2CO2H
|
C - CH2 CO2H
I bolded the 4 hydrogens that can be subsituted by sodium.
Three of those hydrogens belong to carboxyl group (- CO2H) and one to a hydroxyl group (- OH).
You need to take into account that 4 H will form 2 H2 molecules.
So, the answer is that 2 moles of molecules will be formed from 1 mole of citric acid molecules.
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