9. Inhaling an average human lung volume of 6.0 Liters would cause you to gain how many grams due to O2 gas? (if your lungs were at STP and air was 100% O2)?

10. How much mass would you lose by exhaling the same 6.0 Liters of CO2 (assuming
STP and 100% of exhalation was CO2)?

- decrease the number of plants and animals living in the water.

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.

the answer is symmetrical : )