A match can remain unlit in the middle of the flame of a bunsen burner by not having the needed substance to ignite it. The match would not have a certain amount of oxygen reaching it at the middle of the flame since almost all of the oxygen is supplied in the production of flame of the bunsen burner. Oxygen is always needed for something to burn.
Answer:
chemical properties and the same number of valence electrons
S, P.
S is a sphere
P is an infinity
<span>Sue added salt to water in order to make a salt solution, the original amount of water is 400 grams. In order for Sue to obtain 405 grams of salt solution using 400 grams of water, 5 grams of salt must be added.</span>
Answer:
The correct option is: AgNO₃(aq) + KCl(aq) = AgCl(s) + KNO₃(aq)
Explanation:
Precipitation reaction is a chemical reaction that involves reaction between <em>two soluble salts to give an insoluble salt.</em> This <u>insoluble salt exists as a solid</u> and settles down.
Therefore, the solid formed in a precipitation reaction is known as the precipitate.
As the solid silver nitrate (AgNO₃) and solid potassium chloride (KCl) are <u>soluble in water</u>, therefore, their aqueous solutions are represented as AgNO₃(aq) and KCl(aq), respectively.
The precipitation reaction of AgNO₃(aq) and KCl(aq) gives an <u>insoluble salt, silver chloride (AgCl) and a soluble salt, potassium nitrate (KNO₃).</u>
The insoluble salt, <u>AgCl is called the precipitate</u> and is represented as AgCl(s). Whereas, the <u>soluble salt</u>, KNO₃ is represented as KNO₃ (aq).
<u>Therefore, the chemical equation for this precipitation reaction is:</u>
AgNO₃(aq) + KCl(aq) → AgCl(s) + KNO₃(aq)
