Question

Show that 100g of water and 100g of co2 are not equal in no. of moles. Molecular masses of water and co2 are 18u & 44u respectively

Answer 1

for water numbers of molees=100/18=5.55
for co2, number of moles=100/44=2.2727
there the number of moles are not equal

Answer 2

100gm of water and 100gm of carbon dioxide gives 5.55 moles and 2.27 moles respectively.

Given:

Water = 100g

Carbon dioxide = 100g

Molecular masses:

Water = 18u

Carbon dioxide = 44u

To prove:

Number of moles of Carbon dioxide ≠ Number of moles of water.

Formula to be used:

Number of moles = $\frac{Mass}{Molecular Weight}$

For water - $\frac{100}{18} = 5.55moles.$

For Carbon dioxide - $\frac{100}{44} = 2.27moles.$

Since, 100gm of water and 100gm of carbon dioxide gives 5.55 moles and 2.27 moles respectively, it is proved that number of moles are different.