Anyone have that one person that they miss so much? That one person that when they are here everything's ok but once they go you feel all the pain they took away? That one person you have a song with but when you listen to it, it makes you cry because you miss them so much?

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.

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6