The buoyancy equation in chemistry, is used to correct the mass obtained from a measurement made on a balance, specifically when the mass obtained from the balance does not correspond to the object's standard mass density. In physics buoyancy is defined as the upward force on an object which is found in air, gas or liquid.
The equation is
where
Harris, D., Quantitative Chemical Analysis, 9th Ed., W. H. Freeman, Pp.29 (2015).