Blank - transport moves substances from an area of high concentration to an area of low concentration.

Calculate the number of moles of ethane in 100 grams

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false