22. Metallic compounds a. are poor conductors of electricity
b. dissolve in water
c. have low melting points
d. can be hammered into sheets

If the particles in a sample of matter have an orderly arrangement and move only in place, the sample is a

Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?

In a heat of an engine, if 700 j enters the system, and the piston does 400 j of work what is the final internal (thermal) energy of the system if the initial energy is 1,500 j