What is the mass of molecules of H3PO4?
100 g
102 g
99 g
98 g
As we learnt in
Mole Concept -
One mole is the amount of a substance that contains as many particles or entities as there are atoms in exactly 12 g (or 0.012 kg) of the 12C isotope.
- wherein
one mole = 6.0221367 X 1023
3H = 3, P = 31, 4O = 64
So H3PO4 = 98 g
Option 1)
100 g
Incorrect
Option 2)
102 g
Incorrect
Option 3)
99 g
Incorrect
Option 4)
98 g
Correct
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