what is the descrepancy gap between customers& expectation and perception towards service quality of front office staff/ night auditor​

When a comet collides with earth, it adds material to our planet and causes great damage. therefore, a collision like this is a a. destructive force b. constructive force c. geologic process and event d. constructive and destructive force

Which step in naming unsaturated hydrocarbons is used for alkenes but not alkynes

If two atoms are bonded to a central atom with no lone pairs, how will they be arranged