Which one of the following statements is false for 0.5mol of C2H6? (C=12, H=1 and take Avogadro number = 6×1023)
A) It weights 15 g
B) It includes 3×1023 C2H6 molecules
C) It includes 1mol C atom
D) It includes 4 atoms
Molar mass of C2H6=2.(12)+6.(1)=30gmol,
1mol C2H6 is 30gmol ⟹ 0.5mol C2H6 is = 15gmol. A is true.
1mol C2H6 includes 6×1023 C2H6 molecule, 0.5 mol C2H6 includes:
C2H6 molecules = 3×1023 C2H6 molecules, B is true.
1 mol C2H6 includes 2mol C atoms 0.5mol C2H6 include? Mol C atoms, C is true.
1mol C2H6 includes 8NA atoms 0.5mol C2H6 includes = 4NA atoms, D is false.