Which of the following will definitely form an ionic bond? a. Cl
b. Al
c. O
d. Na+

In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust

Melting 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.

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.