Date : imagine a universe in which the fair quantum
numbers can have the same possible values as in our
universe, except that the angular momentin quanto
nuumber (L) can have integral values of 0, 1, 2
; (N+1) instead of 0,1,2,., 0-10)
a) How many elements would be in the first two
rows of the Periodic Table in this universe

what's the

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

wher is the rest of the question