2. A set of data from Professor Clarke's helium pycnometer are given below. They include the mass of a pumice sample (with a 1 sigma error), and seven measurements of the volume of this sample. Dacite Pumice Mass (g) 1.1378 ±0.0006 Volume (cc) 0.64937 0.64918 0.65048 0.65021 0.65123 0.65315 0.65363 Calculate the density of this pumice sample, and the uncertainty in this density. Show your work.

2. A set of data from Professor Clarke's helium pycnometer are given below. They include the mass of a pumice sample (with a 1 sigma error), and seven measurements of the volume of this sample. Dacite Pumice Mass (g) 1.1378 ±0.0006 Volume (cc) 0.64937 0.64918 0.65048 0.65021 0.65123 0.65315 0.65363 Calculate the density of this pumice sample, and the uncertainty in this density. Show your work.