"Five? During the Golden Week, Zheng Zheng and her mother traveled to Wuxi and bought a teapot in Yixing, as shown in the picture. She heard that Yixing teapot is made of Yixing's unique mud.

(1) The volume of spilled water is the volume of the pot cover, and the density of the pot cover can be calculated according to the quality of the pot cover, that is, the density of this material;

V overflow =V water =m water ρ water =14.8g1g/cm3 =14.8cm3,

ρ pot =m pot cover v overflow = 44.4g14.8cm3 = 3.0g/cm3 = 3.0x103kg/m3,

(2)V pot =mρ pot =159g3g/cm3 = 53cm3 = 5.3x10-5m3.

(3)m tea =m total -m empty pot =684g- 159g=525g,

ρ tea =m tea v empty pot =525g553cm3? 53cm3= 1.05g/cm3。

Answer: (1) The density of this substance is calculated to be 3.0×103 kg/m3;

(2) The material volume of teapot is 5.3×10-5m3;

(3) The density of tea is 65438 0.05g/cm3.