Question

Determine the density of the rock using correct significant digits. The mass of the rock is 25.69 g?

Answer 1

`"Density, "rho="Mass"/"Volume"=2.6*g*mL^-1`

Explanation:

And thus `rho_"rock"=(25.69*g)/((40-30)*mL)` `=` `2.6*g*mL^-1`

Note that the answer is quoted to 2 significant figures because the volume was measured to 2 signficant figures.