**Density** represents the mass of an object or compound within a given volume. When** **calculating density, we use the following *equation*:

$\overline{){\mathbf{density}}{\mathbf{=}}\frac{\mathbf{mass}}{\mathbf{volume}}}$

The density of an irregularly shaped object was determined as follows. The mass of the object was found to be 28.90 g __+__ 0.03 g. A graduated cylinder was partially filled with water. The reading of the level of the water was 6.4 cm^{3} __+__ 0.1 cm^{3}. The object was dropped in the cylinder, and the level of the water rose to 9.8 cm^{3} __+__ 0.1 cm^{3}. What is the density of the object, with appropriate error limits? (See Appendix 1.5.)

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