Which source would be most reliable for gathering experimental results related to a new compound's molecular mass? (2 points)
A newspaper article that describes the compound's discovery
A scientific journal that provides the compound's measurements
A television show that explains ways the compound can be used
A textbook that lists molecular masses of similar compounds

noble gases since they have a full valence shell and thus require a lot of energy in order to form bonds.

answer:   the sound pitch (frequency) and the sound intensity (strength) of the car will decrease.

explanation:

- as the distance between the source and the person increases, there must be more air molecules involved in transferring the sound leading to a decrease in the sound pitch (frequency “ number of sound waves received   per second”).

- according to the inverse square law of sound “sound intensity is inversely proportional to the square of the distance between the source and the person”, as the distance between the source and person doubles, sound intensity (strength) will decrease to its quarter..

provide the multiple-choice options, otherwise this question cannot be answered.