One of the answers below is false. Pick the answer that is false about average atomic mass.

Question 1 options:

Average atomic mass is found on the periodic table.

Average atomic mass is the weighted mass of all isotopes with respect to the ions of an atom.

Average atomic mass is the weighted mass of all isotopes with respect to the abundance of the atoms' isotopes.

Average atomic mass ignores the mass of electrons.

3 hours because it is a decent distance.

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.

idk what is it? is this a question that you know the answer or u dont