The answer is C but i might be wrong
Answer:
condensation
Explanation:
when gases change to liqud it condenses.This occurs when the temperature is lowered
Answer:

Explanation:
Given:
A solution contains one or more of the following ions such as Ag,
and 
Here the Lithium bromide is added to the solution and no precipitate forms
Solution:
Since with LiBr no precipitation takes place therefore Ag+ is absent
Here on adding
to it precipitation takes place.
Precipitate is as follows,

Thus,
is present
When
is added again precipitation takes place.
Therefore the reaction is as follows,

Therefore,
are present in the solution
Answer:
yes it is true they apply necessary safety measures
16 I think but I could be wrong lol