What is the mass percent composition of an element in a molecule? A. The element's mass in the empirical formula divided by its molecular formula mass

B. The fraction of the molecule's mass that comes from the element's mass

C. The fraction of the element's mass that comes from one atom of the element

D. The fraction of the total number of atoms in the molecule that comes from the element

Try B. The fraction of the molecules mass that comes from one atom of the element

the molecules move in straight line until they collide with each other or with the walls of the container. collisions are perfectly elastic; when two molecules collide, they change their directions and kinetic energies, but the total kinetic energy is conserved.

explanation:

state the principle of separating two immiscible liquids by separating funnel. describe an activity with diagram to separate a mixture of water and kerosene oil. answer: immiscible layers separate out in layers depending on their densities in separating funne