Ethane
see the picture for explanation
Since it is an element. It is 1.01g/mol as per the periodic table
The gas however H2 is diatomic which has a mass of 2.92
Hibernation is an animal's state of being inactive and metabolic depression. It is a season of heteronomy, which means that enter in a state of low body temperature, slow breathing, and heart rate. There are some species such as reptiles and snakes that hibernates in Arizona.