JEE · NEET Previous Year Question

How many moles of magnesium phosphate, will contain 0.25 mole of oxygen atoms?

Topic: JEE PYQ

Answer: B. Full step-by-step solution below.

  1. A0.02
  2. B3.125 ×
  3. C1.25 ×
  4. D2.5 ×

Correct answer: B

Solution

(b) 1 molecule of has 8 atoms of Oxygen.
mole of has 8 mole of Oxygen atoms.
Now, it is given 0.25 mole of oxygen atoms
Moles of having 0.25 mole of atoms is moles

Hence, option b is correct.

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