Answer:
H₂CO₃ (aq) ⇒ H₂O (l) + CO₂ (g)
Explanation:
Carbonic acid dissociates into water and carbon dioxide which is gas which is used as a fire extinguisher and also which is identified after expose to the flaming and glowing splints. It is a colorless gas which can be identified by brisk effervescence seen in the tube.
<u>The balanced reaction of the decomposition of carbonic acid is:</u>
<u>H₂CO₃ (aq) ⇒ H₂O (l) + CO₂ (g)</u>
By nuclear fusion of hydrogen nuclei into Helium
D would be the correct answer for this
Explanation:
reaction A is exothermic reaction as a substance is produced from two substances
and
reaction B is endothermic as two substances are formed from one complex structure
Answer:
D. Gas
Explanation:
The correct option is D.
Just like the sun, there is a layer of the earth that is gas. It is known as the atmosphere.
The earth's atmosphere is known to be a layer of gases that are surrounded by the earth and retained by the earth's gravity. The gases in the earth actually contain roughly 78% nitrogen, 21% oxygen, 0.97% argon and carbon dioxide, 0.04% trace amounts of other gases, and water vapor. This combination of gases is commonly called air.
