Accuracy is the closeness of agreement between the results of a measurement and a true value of the measurand.		References in this course: M1L2T2, 20/32; M2L3T2, 8/33 ; M3L1T2, 3/29
The apparent mass vs. 8.0 gram per cubic centimeter  of an object is defined as the mass the object would "appear" to have if it were compared against a standard which has the density of 8.0 gram per cubic centimeter.  It is a mass giving the same balance reading as the object when the comparison is made at 20 C in air having a density of 1.2 milligram per cubic centimeter.		Note: See also Conventional Mass		References in this course: M2L1T2, p. 25/32
An object in a fluid (air is a fluid) experiences a buoyant force equal to the weight of the displaced fluid.		The buoyant force reduces the resulting force exerted on a balance pan.		References in this course: M2L1T2, 8/32