(01.06 LC) Which of the following is a property of a pure substance? (5 points)
O It is made up of a single element or type of compound.
O Its components can be separated by employing physical methods.
o It consists of different types of compounds.
O It may have substances in different states of matter.

Atrain travels 74 kilometers in 3 hours, and then 81 kilometers in 5 hours. what is its average speed?

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.

When a scientific theory has been tested and proved by the scientific community, it becomes a law