If x g of A (atomic mass 50) contains n atoms, how many atoms are there in 20x g 3.32 of elements B (atomic weight 100).
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Verified answer
Answer:10n
Explanation:
The number of atoms in 1 mole of a substance is equal to the Avogadro's number which is 6.022×1023
. The number of moles of any substance is given by:
m=given mass molar mass/atomic mass
Therefore the number of atoms of A is given by
n=Nagiven massmolar mass/atomic mass
Where N is the Avogadro number
For atom A, we have
na=Nax50nb=Na20x100
Dividing the 2 equations, we get:
nbna=50(20x)100x
nb=10na