
Calculate the mass of 1 oxygen atom and oxygen molecules in kg (O=16).
Answer
531k+ views
2 likes
Hint- In order to calculate the mass of one atom and one molecule of oxygen in kg first we will use the atomic mass of oxygen given in periodic table and we will use the same to find the molecular mass of oxygen. As we know that atomic mass and molecular mass is given for one mole of atoms or molecules so by dividing the mass by Avagadro’s number we will find the mass of one atom and one molecule.
Complete answer:
Formula used-
Atomic weight of one oxygen atom = 16amu
Mass of 1 mole of oxygen atoms = 1 × atomic weight of one oxygen
=16 gm
A molecule of oxygen is given as , here 2 oxygen atoms are present in a single molecule of oxygen.
So, molecular mass of a oxygen is
As we know that atomic mass and molecular mass is given for one mole of atoms or molecules, so by dividing the mass by Avagadro’s number we will find the mass of one atom and one molecule.
Mass of one atom of oxygen is:
Let us convert this mass into kg
Similarly let us find the mass of one oxygen molecule:
Mass of one molecule of oxygen is:
Let us convert this mass into kg
Hence, the mass of 1 oxygen atom is
And the mass of one molecule of oxygen is
Note- The molecular mass of an element is defined as the sum of the masses of the elements present in the molecule. Molecular mass can be easily obtained by multiplying the given atomic mass of an element by the number of atoms contained in the molecule and then by applying the masses of all the elements in the molecule. In order to solve such types of problems students must remember the formula for molecular weight and must know the method to find the atomic weight of any compound.
Complete answer:
Formula used-
Atomic weight of one oxygen atom = 16amu
Mass of 1 mole of oxygen atoms = 1 × atomic weight of one oxygen
=16 gm
A molecule of oxygen is given as
So, molecular mass of a oxygen is
As we know that atomic mass and molecular mass is given for one mole of atoms or molecules, so by dividing the mass by Avagadro’s number we will find the mass of one atom and one molecule.
Mass of one atom of oxygen is:
Let us convert this mass into kg
Similarly let us find the mass of one oxygen molecule:
Mass of one molecule of oxygen is:
Let us convert this mass into kg
Hence, the mass of 1 oxygen atom is
And the mass of one molecule of oxygen is
Note- The molecular mass of an element is defined as the sum of the masses of the elements present in the molecule. Molecular mass can be easily obtained by multiplying the given atomic mass of an element by the number of atoms contained in the molecule and then by applying the masses of all the elements in the molecule. In order to solve such types of problems students must remember the formula for molecular weight and must know the method to find the atomic weight of any compound.
Recently Updated Pages
Master Class 11 Business Studies: Engaging Questions & Answers for Success

Master Class 11 Economics: Engaging Questions & Answers for Success

Master Class 11 Accountancy: Engaging Questions & Answers for Success

Master Class 11 Computer Science: Engaging Questions & Answers for Success

Master Class 11 English: Engaging Questions & Answers for Success

Master Class 11 Maths: Engaging Questions & Answers for Success

Trending doubts
The flightless birds Rhea Kiwi and Emu respectively class 11 biology CBSE

1 Quintal is equal to a 110 kg b 10 kg c 100kg d 1000 class 11 physics CBSE

A car travels 100 km at a speed of 60 kmh and returns class 11 physics CBSE

What is 1s 2s 2p 3s 3p class 11 chemistry CBSE

In tea plantations and hedge making gardeners trim class 11 biology CBSE

What is the type of food and mode of feeding of the class 11 biology CBSE
