A student measures the mass and volume of three 1.00 g samples of water in different…
CHEMISTRY · Multi-part · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures
Problem
A student measures the mass and volume of three 1.00 g samples of water in different phases. The data are summarized below.
Phase | Measured Volume
————|———————————
Ice at –10 °C | 1.09 cm³
Liquid at 25 °C | 1.00 cm³
Vapor at 100 °C and 1.00 atm | 1.70 × 10³ cm³
(a) Calculate the mass density, in g cm⁻³, of water in each phase. Show your work to the correct number of significant figures.
(b) Using your calculated densities, list the phases in order from most dense to least dense.
(c) On the basis of the volumetric data, predict which phase will exhibit the greatest fractional volume decrease when the external pressure on the sample is raised by 10 atm at constant temperature. Explain your prediction in terms of particle spacing.