An atom is z is 12times heavier than the mass of x find the mass of zin z3x5if the mass of x is 1g
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An atom is 10 times heavier than
12
1
th of mass of a carbon atom (C−12) The mass of the atom in amu is ?
December 27, 2019
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Gagan Praveen
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ANSWER
By definition,
1 amu=(
12
1
)
th
of mass of C−12
∴ Mass of atom which is 10 times heavier than (
12
1
)
th
of mass of C−12 atom =10
⎣
⎢
⎡
massof(
12
1
)
th
C−12
⎦
⎥
⎤
=10[1 amu]
=10 amu
1 mole of CO=6.023×10
23
particles of CO
6.023×10
23
atoms of C contains 6.023×10
23
atoms of O.
Similarly, 6.023×10
24
atoms of C contains 6.023×10
24
atoms of O
Now oxygen is diatomic
10 g− atom =
2
1
(10 g molecule of O
2
) =5 g molecule of O
2
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