Dãy chất nào sau đây chỉ gồm các oxit axit: * A. CO2, CaO, MgO
B. H2O, MgO, SO2
C. CO2, P2O5 , N2O5
D. ZnO, Fe2O3, SO3

The biomedical technique in which a part of the brain is destroyed with electric current is known as a. electroconvulsive therapy b. prefrontal lobotomy c. bilateral cingulotomy d. tardive dyskinesia

The size (radius) of an oxygen molecule is about 2.0 ×10−10m. make a rough estimate of the pressure at which the finite volume of the molecules should cause noticeable deviations from ideal-gas behavior at ordinary temperatures (t= 300k ). assume that deviatons would be noticeable when volume of the gas per molecule equals the volume of the molecule itself.

Name 3 types of energy you see being used as you look around a classroom