Which of the following elements of a map is used to
determine direction?

Direction of features is often determined by a magnetic compass which measures angles relative to Magnetic North. Using the declination diagram found on a map, individuals can convert their field measures of magnetic direction into directions that are relative to either Grid or True North.

A mole is defined as the amount of substance it can be expressed as gram ,

atom , molecules etc ...

to go fr gram to mole divided gram by molar mass