Gas laws describe and predict the behavior of gases without attempting to explain why they happen.

true
false

The statement is - True.

The gas laws are laws about the gases. They describe and predict the behavior of the gases and are explaining the processes, but what they lack is explanation as to why they had happened.

As most of the definitions, in lot of scientific fields, the gas laws too, give us definitions are rules of how things behave under certain circumstances. But, as most of the other definitions, the gas laws too, lack a proper explanation in them as to why would those processes occur, what triggers them.

the answer is d. 74.02

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.