The first whistle is louder while the second whistle has a higher pitch
Loud vs high
I believe it’s the third option
Chemically combined to make a new pure substance
The correct option is D.
The hydrogen atoms that are attached to the nitrogen atom in the ammonia molecule are capable of forming hydrogen bond. The hydrogen bond that exist in the ammonia molecule is the reason why it shows higher boiling point compare to the other hydrides. Hydrogen bond occur in ammonia because ammonia is one of the most electronegative elements.
O i get it it does not stik on metal eater way
Answer:
A. Frictional
Explanation:
Friction is the force created when two solid objects in contact try to move past each other.
