) calculate the number of atom of
in each of following C Given:
Atomic mass of. I = 127 W.
a. 254 U of iodino (1)
b. 254 9 of iodine (1)
(Ans: 2 atoms, 1.2044 x 1024 atoms).
Answers
Answered by
2
Answer:
2 atoms, 1.2044 x 1024 atoms).
Explanation:
Given :-
Atomic mass of I = 127 u
To Find :-
No. of atoms in 254 u of Iodine
No. of atoms in 254 g of Iodine
Solution :-
( a )
No. of atoms = given mass / atomic mass
No. of atoms = 254/127 = 2 atoms.
------------------------
( b )
we know that,
Mass no. = atomic no.
Atomic no. of I = 127 u
-------------------------
Therefore, Molar mass = 127 g
No. of moles = 254/127 = 2
Now,
No. of atoms = no. of moles × Avogadro's no.
No. of atoms = 2× 6.022×10^24
No. of atoms = 12.046×10^23
Similar questions