Consider the following reaction: CH4 (g) +4Cl2(g) → CCl4(g) + 4HCl(g)
What mass of CCl4 will be formed if 19.2 g of methane react with 107 g
of chlorine gas?
(Write answer in decimal form to one decimal place, NO units in answer.)

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.