Answer:
Hydrogen Fluoride will dissolve glass & eat concrete; BUT mixed with water, it is very nasty - but fairly weak!
A strong acid EASILY donates a Proton (H+).
Look up dissociation of acids and the ones that give up that H+ is the strong one.
Explanation:

As depth increases, the density of the layers decreases.
The answer to your question is false, boiling happens below the surface of a substance.
The Lewis Structure of HCN is shown below,
Number of Bonding Electrons: In HCN Hydrogen is bonded to Carbon through single bond and Nitrogen is bonded to Carbon through Triple Bond. Single bond is formed by two bonding electrons, while, triple bond is formed by six bonding electrons, Hence,
Number of Bonding Electrons = 8
Number of Non-Bonding Electrons:
In HCN there is only one lone pair of electron present on Nitrogen atom which is not taking part in bonding. Hence,
Number of Non-Bonding Electrons = 2
Result: Number of Bonding Electrons = 8 Number of Non-Bonding Electrons = 2
Answer:
Acceleration is defined as the rate of change for velocity.