Answer:
48
Explanation:
because you add 6 and 6 and 12 to get it
A nitrogen atoms can make 3 covalent bonds because it has three unpaired electrons
A. phase changing. Physical change is any change in matter that involves the substance going from one physical state to another, and phase change is most commonly used to describe transitions between solid, liquid and gaseous states of matter.
C- a persons heart rate slows down after 5 minutes.