Answer:
because if there will be no oxygen no one would be able to stay alive
Explanation:
oxygen is so important to us we can not breathe without it if there will be no oxygen every one would be dead right now
2Na + Cl₂ ----> 2NaCl
answer is C
Answer:
As they absorb energy, they are broken.
Explanation:
Solutes dissolve when they interact with water. This is because, the attraction of solute particles with each other weakens and become replaced by solute-solvent interaction. As the water surrounds the solute, the solute is now said to be hydrated.
Energy is required to break solute-solute bonds. This energy absorbed in breaking solute-solute bonds is compensated for by the energy liberated when solute particles are hydrated.
If energy required to break solute-solute interaction is less than the energy liberated when solute particles are hydrated, the substance will dissolve in water.
Hence, as a substance dissolve in water, energy is absorbed when solute-solute interactions are broken.
Concentration of solution: C=n/v
=> C=5mol/10L = 0.5mol/L
What do u mean P=? What is P?
