Units and Measurement (Section)

(a) A cube of osmium metal 1.500 cm on a side has a mass of 76.31 g at 25 °C. What is its density in g/cm3 at this temperature? (b) The density of titanium metal is 4.51g/cm3 at 25 °C. What mass of titanium displaces 125.0 ml of water at 25 °C? (c) The density of benzene at 15 °C is 0.8787g/mL. Calculate the mass of 0.1500 L of benzene at this temperature.

C127 Lecture 6 Notes- Computational Chemistry 2-18-16 Midterm exam- covers first 4 experiments (calorimetry, soap, separation, density/data) Learning Objectives o Investigate how computer calculations can enhance understanding of molecular shapes o Use computer calculations to find lowest energy conformations of molecules o Use calculations to determine dipole moments and charge distribution in a molecule o See how modeling software can be used to visualize interaction between biologically relevant macromolecules Spartan 14- gives molecular geometry of molecules o Has many calculation modules to find lowest energy configuration based on bond lengths and