Three samples are compared to determine which contains the greatest number of particles.
• 18 g of H₂O(l)
• 44 g of CO₂(g)
• 23 g of Na(s)
Four students offer rankings (from fewest to greatest particles):
A. H₂O < CO₂ < Na
B. Na < H₂O < CO₂
C. H₂O = CO₂ = Na
D. CO₂ < H₂O < Na
Which student’s ranking is correct?
a) B
b) C
c) A
d) D