A 200. mL balloon of helium gas has a temperature of 293K. What is the temperature of the helium balloon if the volume expands to 600. mL?
a
879 mL
b
60.0 mL
c
273 mL
d
410. mL

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.

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?

Draw the lewis dot structure for each of the following polyatomic ions