According to the lab introduction in your laboratory manual, the equation for sodium carbonate dissolving in water is:
3
Na2CO3 + 2H20 – 2Na+ + 2OH- + H2CO3
When this process occurs, sodium carbonate does not 100% separate into ions.
There is always some sodium carbonate in solution.
Based on this reaction, explain whether Sample A or Sample B is most alkaline and
why.

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but

it would only be the stuff in module eight so you need to study all the lessons in that you also could check the flvs

hope this : )