6c + 3 h2 -> c3h6, \delta δ δh= 49 kj if 8.2 moles of c react with excess h2, what is the total change in energy?

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

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.

Element before carbon on the periodic table