(0) A chlorine atom has 17 electrons. Complete the following structure to show how the electrons are arranged.
ci
(1) Chlorine reacts with potassium bromide to form potassium chloride and bromine,
(1) Complete the symbol equation for this reaction.
CI, + KBr → 2KCI +
(ii) Explain why iodine does not react with potassium bromide.

Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution

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.

Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.