Chọn đáp án đúng: Dãy gồm các chất chứa liên kết cộng hóa trị không phân cực là? A. Cl2 ; O3 ; H2O.
B. K2O ; Cl2 ; O3.
C. O2 ; O3 ; H2O.
D. O3 ; O2 ; H2.

Which statement is best described as a atom

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.

Which is an example of the practical pursuit of alchemy? a. forming perfect substances. b. transforming base metals. c. developing metalworking techniques. d. linking spiritual characteristics with material substances.