No, mass cannot be thought of as the combined total atomic weight of a body divided by 9.8. Mass is a fundamental property of matter and represents the amount of matter in an object. It is not directly related to atomic weight or gravity.
Atomic weight, on the other hand, is the average mass of an atom of an element, taking into account the different isotopes and their abundances. Atomic weight is expressed in atomic mass units (amu) and is a characteristic property of each element.
The acceleration due to gravity on Earth, approximately 9.8 m/s², is related to the force of gravity acting on an object with mass. The weight of an object is the force exerted on it due to gravity and can be calculated by multiplying its mass by the acceleration due to gravity.
Therefore, while atomic weight and gravity are related to mass in certain contexts, they cannot be used interchangeably or divided to determine the mass of a body. Mass is an independent property, and its value does not depend on atomic weight or the acceleration due to gravity.