# Mechanical Engineering - Thermodynamics - Discussion

Discussion Forum : Thermodynamics - Section 4 (Q.No. 2)
2.
The oxygen atom is __________ times heavier than the hydrogen atom.
2
4
8
16
Explanation:
No answer description is available. Let's discuss.
Discussion:
16 comments Page 1 of 2.

Gourav said:   9 months ago
Why molecular mass is being calculated here?

When it is clearly been asked about ATOMS not MOLECULES. I think it should be 8.

Santhosh said:   2 years ago
Mass of hydrogen is 1.

Mass of oxygen I is 16.

So sixteen times.

Shahbaz Ali said:   5 years ago
Atomic mass of Oxygen is 16.
Atomic mass of Hydrogen is 1.
So it's ratio is 16/1=16. Answer.
So, option is D

Sparta somu said:   5 years ago
O+O =O2.

16+16 =32,
16/2 + 16/2 = 32/2,
8+8=16.

Surendra said:   5 years ago
Atomic mass of H = 1,

Atomic mass of O =16.

So, the ratio of the atomic mass of both is 16. Oxygen atom 16 times heavier than hydrogen atom.

Deepak S said:   5 years ago
The molar mass of O2 = 2*16 = 32
The molar mass of H2 = 2*1 = 2

As w.k.t. atomic mass of both oxygen and hydrogen is 16 and 1 respectively, Hence
ratio of their masses = 32/2 = 16.

Swithin said:   5 years ago
Atomic weight of hydrogen is 1 and oxy is 16.

Mohtesan Maqsood said:   5 years ago
Atomic mass of hydrogen is 1 & oxygen is 16.

So, the oxygen atom is 16 times heavier than a hydrogen atom.

Akash said:   5 years ago
According to me, the correct answer is 8.

Rajnikant said:   6 years ago