Question

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⭕ How many atoms are in 0.5 moles of nitrogen ?? ⭕


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Answer 1

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The number of atoms present in 0.5 gram atoms of nitrogen is same as the atoms in a)12g of C b)32g of S c)8g of oxygen d)24g of magnesium

A)

Solution :

Atomic mass of nitrogen $=14\;g

Therefore , mass of 1 mole of nitrogen =14g=14g

Now, 1 more =6.022×1023atoms=6.022×1023atoms

Since, 1g−atom=11g−atom=1 more

0.5g−atom=0.5moles0.5g−atom=0.5moles

Therefore no of atoms in 0.5 moles of Nitrogen =6.022×1023×0.5=6.022×1023×0.5

=3.011×1023=3.011×1023

Now,

12g12g Carbon =1 mole carbon

32g32g sulphur = 1 mole sulphur

8g8g oxygen =0.5 mole oxyen

24g24g magnesium =1 mole magnesium

Number of atoms in 0.5 mole oxygen =3.011×1023

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Answer 2

number of atoms present in 0.5 moles of nitrogen atom is same has in...

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