What is simple and fractional distillation? what is chromatography?​

Explanation:

Fractional distillation is the process for separating the mixture into its parts. Simple distillation is the process in which two liquids with a different boiling point can be separated. Boiling point. Fractional distillation can separate the mixture, which has boiling points close to each other.

2. what is chromatography?

the separation of a liquid mixture by passing it through a material through which some parts of the mixture travel further than others

given:

mass of na = 115 g

excess cl2

to determine:

mass of nacl produced

explanation:

given reaction is-

2na(s) + cl2(g) → 2nacl(s)

since cl2 is in excess, na will be the limiting reagent

as per the reaction stoichiometry na: nacl = 1: 1

i.e. moles of na reacted = moles of nacl formed

now, # moles of na = mass of na/atomic mass

                                  = 115 g/23 g.mol-1 = 5 moles

therefore, moles of nacl = 5

molar mass of nacl = 58 g/mol

mass of nacl = 5 moles * 58 g.mol-1 = 290 g

ans: amount of nacl produced = 290 g