8 hours times 60 minutes is 480 and times 60 seconds is 28800 seconds of sleep per day. That times 7 days is 201,600 seconds of sleep per week
Answer:
1) MgO + 2HBr -> MgBr2+H2O
2)2N2+5O2->2N2O5
3)C2H4+2O2->CO2+2H2O
4)Fe+2HCl->FeCl2+H2
Explanation:
Hydrogen bond is a type of intermolecular chemical bond formed between two molecules. It is classified as a special dipole-dipole attraction between polar molecules in which a hydrogen atoms is directly joined to a highly electronegative atom.
- A hydrogen nucleus has a high concentration of positive charges.
- A hydrogen bond is actually an electrostatic attraction between the hydrogen atom (nucleus of one molecule and the electronegative atom, O or N or F) of a neighboring molecule.
- The strength of the bond depends on the relative electronegativity of the atom directly joined to the hydrogen.
- Hydrogen bonding forces is reflected in the physical properties of compounds such as water and ammonia.
