what weighs more no of atoms 1g Ag or 1g Au.(Ag:108u,Au:197n)
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Answered by
0
Answer:
a) Gram atomic mass of Au=197g
197 g Au contains =6022×10
23
atoms
∴ 1 gm of Au contains =
197
6022×10
23
=306×10
23
atoms
b) molecule mass of water = 18 g
no of molecules in 0.05 g of water =
18
0.05
=278×10
−3
molecules
one molecule =6023×10
22
atoms/ molecules.
∴2.78×10
−3
molecules of water contains =(278×10
−3
)
(6023×10
23
)
=1.67×10
21
molecules
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Answer:
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