The intermolecular bonding for HF is van der Waals, whereas for HCL, the intermolecular bonding is hydrogen. Since the van der Waals bond is stronger than hydrogen, HF will have a higher boiling temperature. Since the covalent bond is stronger than van der Waals, HF will have a higher boiling temperature.
Use stoichiometric ratio to determine which is in excess and which is limiting
A single monkey is not an ecosystem
As ecosystem comprises of all the living and non living parts a community under study.
So if have define an ecosystem of which monkey is a part then we have to include the living organism like tress and monkey and the non living parts like rock and wind which affects the living organism.
