D) because both reactions are occurring at the same rate. They are not equal but their concentrations are constant.
Mechanical twinning occurs in metals having body center cubic and hexagonal closed packed structures. Twinning is said to occur when a portion of a crystal takes up an orientation that is related to the orientation of the untwinned lattice in a definite symmetrical manner.
Any of the basic mechanical devices for applying a force, such as an inclined plane, wedge, or lever.
I think it's 534 grams per cubic centimetre
