Orange juice is a mixture of several substances, including water, sucrose, and
citric acid. If a scientist studies samples of many brands of orange juice, which
finding is most likely?
A The samples contain the same substances in a variety of proportions.
B The water in each sample has a unique set of properties.
c The samples contain the same substances in a fixed proportion.

C. The samples contain the same substances in a fixed proportion.

i believe it is 40–40–20%

explanation:

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