Question

Which of the following sample has maximum mass?(atomic mass of N = 14u , C=12u , O =16u
a) one mole of nitrogen molecules
b) 0.5 mole of carbon dioxide
c) 3.011 into 10 ^23 molecules of oxygen
d) 0.25 mole of NO2 molecules

Answer 1

Answer:

Option a ::

1 mole of nitrogen molecule

mass = 14u

Option b::

0.5 mole od CO2

mass = 0.5 × 44 = 22u

Option c::

6.022×10²³ molecules of O2 = 32u

3.011 × 10²³ molecules = 16u

Option d::

0.25 × 46 = 11.5u

Therefore Correct option is b