Sodium metal (na) and chlorine gas (cl) are two reactive and dangerous elements. chlorine is a halogen gas that can cause respiratory damage and sodium is an alkali metal that reacts violently with water.

what happens to the properties of sodium and chlorine when they react to form sodium chloride (nacl), common table salt?
a) the properties of both sodium and chlorine change.
b) the properties of both sodium and chlorine remain the same.
c) the properties of sodium are different but chlorine remains a dangerous gas.
d) the properties of sodium remain the same but the properties of chlorine change.

Evaluate this exponential expression,8. (2 + 3)2 – 42

Straightforward questions answered in the powerpoint slidesreaction: heating the starting materials under refluxwhat does it mean to heat under reflux? why do we choose water as the reflux solvent? what are boiling chips used for? why do we put a condenser on top of the reaction? why do we add heat and let the reaction stir for 30 minutes? why do we add sulfuric acid to the reaction after it cools as opposed to when it’s still hot? separation: filtration of precipitatewhy don’t we do an aqueous and organic extraction in the separatory funnel? why do you rinse the salicylic acid on the filter with ice cold water? purification: recrystallization of salicylic acid (no hot filtration needed)what is the difference in the amount of room temperature water vs. boiling water needed to dissolve the salicylic acid (assume a 1.2 gram yield of salicylic acid)? remember, in the lab if you need x ml of boiling water to dissolve a solid, then you should add a little more (definitely no more than 1.5 times the theoretical amount) to ensure it doesn’t recrystallize prematurely.analysis: melting point of salicylic acidwhat can you conclude if the melting point of the salicylic acid you just synthesized is 152-155oc and the 1: 1 mix of your product and “synthetic” salicylic acid is 151-154oc?

Nan element’s square on the periodic table, the number with the greatest numerical value represents the