D= M/V so, D=300/40 wich is 7.5 so D= 7.5g/m3
Ionic compound
Al +3 charge, Aluminum
S -2 charge, Sulfur
Al2S3
Answer:
False
Explanation:
According to kinetic molecular theory, all collisions are perfectly elastic and energy is conserved.
These energy exchange are not change in kinetic energy. They are changes is bonding energy between the molecules. If heat is coming into a substance during a phase change, then this energy is used to by break the bounds between the molecules of the substance. The example we will use here is ice melting into water.
