How many moles of magnesium phosphate, Mg_{3}(PO_{4})_{2} will contain 0.25 mole of oxygen atoms?

Option 1)

0.02

Option 2)

3.125 × 10-2

Option 3)

1.25 × 10-2

Option 4)

2.5 × 10-2

Answers (2)

As we learnt in

Number of Moles -

No of moles = given mass of substance/ molar mass of substance

-

 

 8 moles of oxygen atom present in one mole Mg3(PO4)2

So the 0.25 mole oxygen atom present in \frac{0.25\times 1}{8}=3.125\times10^{2}\ moles

Answer. Option (2)


Option 1)

0.02

This is an incorrect option.

Option 2)

3.125 × 10-2

This is the correct option.

Option 3)

1.25 × 10-2

This is an incorrect option.

Option 4)

2.5 × 10-2

This is an incorrect option.

N neha

Preparation Products

Knockout JEE Main Sept 2020

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 12999/- ₹ 6999/-
Buy Now
Rank Booster JEE Main 2020

This course will help student to be better prepared and study in the right direction for JEE Main..

₹ 9999/- ₹ 4999/-
Buy Now
Test Series JEE Main Sept 2020

Take chapter-wise, subject-wise and Complete syllabus mock tests and get in depth analysis of your test..

₹ 4999/- ₹ 1999/-
Buy Now
Knockout JEE Main April 2021

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 17999/- ₹ 11999/-
Buy Now
Knockout JEE Main April 2022

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 34999/- ₹ 19999/-
Buy Now
Exams
Articles
Questions