Need help WILL GIVE BRAINALIST

A. CO2
B. C
C. c6 h12 06
D. C6

If a solution contains 3 moles/liter of sodium chloride (nacl, made of sodium ions and chloride ions), what is the osmolarity of this solution

What is a number added in front of a formula in order to balance the equation

Suppose you discovered a new element with 120 protons and 2 electrons in its outer level . i'm what group does this new element belong? what properties would you expect it to have