Which of the following is a chemical property of water? A. it freezes at 0oC
B. it has a density of 1.00 g/mL
C. it dissolves many compounds
D. water reacts quickly with sodium metal

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.

8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?