When the atoms of a gas or vapor are excited, for instance by heating or by applying an electrical field, their electrons are able to move from their ground state to higher energy levels. This energy corresponds to particular wavelengths of light, and so produces particular colors of light.
Molality is defined as the ratio of moles of solute to the mass of solvent in Kg. It is also known as molal concentration.
Formula used for determining the molality is:
(1)
where,
= change in temperature
= freezing point depression constant
m = molality
Here, = and =
Put the above values in formula (1)
=
Hence, molality of nonvolatile solute is
The mass is 4.4435, I think hope this helps
In the given question according to the information the process of polymerization is an addition polymerization.
<h3>What is polymerization?</h3>
Polymerization is a process in which addition of many small molecules takes place for the formation of a large three dimensional substance known as polymer.
In the polymerization of polyethene the small repeating molecule is ethene and in this process product formed due to the addition process to the double bond of the ethene.
- In condensation polymerisation removal of water molecule or any other molecule takes place.
- In dehydrogenation polymerisation removal of hydrogen molecule takes place.
- In dehydrohalogenation polymerisation removal of hydrogen halide molecule takes place.
Hence given process is an addition polymerisation.
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