A 1.0 L balloon at 30°C contains 0.030 mol hydrogen gas and 0.010 mol helium gas. What is the total pressure of the balloon if the partial pressure of helium is 0.25 atm?

How many atoms of oxygen are contained in 160 grams of n2o3

In an energy pyramid, which level has the most available energy?

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.