What is the change in speed of the P wave as it goes from the mesosphere to the outer
core? From the outer core to the inner core?

18. use the activity series to predict whether the following synthesis reaction will occur. write the chemical equations for the reaction if it's predicted to occur. (s) + o2(g) -> *note: it is possible.*

Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?