The density of iron is about times greater than water.

6, 2, 8, 10, or 4

How does a hydroelectric power plant converts energy into energy.

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.

How does the motion of particles in a gas change as the gas cools