A 34.5-g gold nugget is dropped into a graduated cylinder containing water. By how many milliliters does the measured volume increase?
The density of water is 1.0 g/ml. The density of gold is 19.3 g/cm?

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

Freezing and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false