How many bromine atoms are present in 39.2 g of CH2Br2? Express the number of atoms to three significant figures.

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3 -> a2cr(no3)3 + a3ag2so4

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 could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?