Question

number of oxygen molecule having weight equal to weight of 20 molecule of so3

Answer 1

80g of SO3 contains Na molecules

Weight of 20 molecules of SO3 = (20 * 80)/(Na) grams

Number of oxygen molecules = (Weight of oxygen/Gram Molecular weight of oxygen) * Avagadro number
= ((20 * 80)/(Na * 32)) * Na
= 50

Number of molecules of oxygen is 50

Answer 2

Heya

Here goes your answer

Weight of one SO3 molecule=32+3(16)

=32+48

=80

Weight of 20 molecules of SO3=20×80

=1600u

Weight of each molecule of oxygen=2×16=32u

No of oxygen molecules that make up to the weight of 20 molecules of SO3 are = 1600/32

=50

◆50 molecules of oxygen