Answer: A persistent or non-volatile chemical agent can remain on a surface for more than 24 hours.
Explanation:
Non-volatile substance is defined as the one which does not readily evaporate into its surrounding. Generally, a non-volatile substance has strong intermolecular forces between its molecules.
A non-volatile substance will take more than 24 hours to remain on the surface.
On the other hand, a substance with weak intermolecular forces present in its molecules will readily evaporate into the atmosphere.
For example, acetic acid is a volatile substance and quickly evaporates into the atmosphere.
Thus, we can conclude that a persistent or non-volatile chemical agent can remain on a surface for more than 24 hours.
Concrete is classified as a homogeneous mix
Answer:
YES
Explanation:
SO3 2-DOES show delocalized bonding
delocalized bonding occurs when there is a resonance structure and the electronic bonds are a delocalised "cloud" around the species
The resonance effect of the sulfite sructures ithe folowing link:
https://www.chemistryscl.com/general/lewis-resonance-structure-of-SO32-/index.php
Answer:
The coefficient of thermal expansion describes how the size of an object changes with a change in temperature. ... In general, substances expand or contract when their temperature changes, with expansion or contraction occurring in all directions.
