A student determines the density of a solid with a pycnometer at 25 degrees Celsisus. The weight of the empty dry pycnometer is 6.2330g. Some of the solid material is introduced; the weight of the pycnometer plus solid is 39.4156g. Water is added to fill all space not occupied by the solid; the weight of the pycnometer plus solid plus water is 46.1357g. The pycnometer is emptied and filled with water only; the weight is 19.7531g. The student's estimated 95 percent confidence limit of error in any single weighing is 0.0020g. Calculate the density and its 95 percent confidence limit of error, and present it and its limit of error in proper form with the correct number of significant figures and proper units.