Which statement is true for the given equation? ZnI2 + Br2 Bromine will combine with zinc iodide during the reaction.
Bromine will replace iodine during the reaction.
No reaction will occur.
Bromine will replace zinc during the reaction.
Zinc iodide will decompose into zinc and iodine during the reaction

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.

Balance the following reaction. as2s3 + 9o2 → 2as2o3 + so2

Calculate the temperature rise when 0.2g of propane is used to heat 400cm cubed of water.