Which best describes the motion of iron atoms in solid iron? O A. The iron atoms move freely and take up space in the solid.
B. The iron atoms move slowly from one place to another.
ОО ОО
C. The iron atoms are motionless.
O D. The iron atoms vibrate in place.

What is the relationship between ka and kb with kw? the sum of ka and kb equals the auto-dissociation constant for water. the product of ka and kb equals the auto-dissociation constant for water. the quotient of ka and kb equals the auto-dissociation constant for water. the difference of ka and kb equals the auto-dissociation constant for water.