Question

Que. Find out number of moles in 32g of flourine atom.


Que. Calculate number of particles 8 g of oxygen molecule.


Que. Which have more number of atoms 100g of Na or 100g of Fe. ( Given that At. Mass of Na = 23u ; Fe = 56u.


Que. Calculate the number of Aluminium ions present in 0.051g of Aluminium oxide.


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Answer 1

Answer:

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Explanation:

Atomic mass of Na = 23 u

Atomic mass of Fe = 56 u

Then, gram atomic mass of Na = 23 g

Now, 23 g of Na contains = 6.022 x 1023 g number of atoms

Thus, 100 g of Na contains = 6.022 x 1023 / (23 x 100 number of atoms)

100 g of Na contains = 2.6182 x 1024 number of atoms

Then, gram atomic mass of Fe = 56 g

Now, 56 g of Fe contains = 6.022 x 1023 g number of atoms

Thus, 100 g of Fe contains = 6.022 x 1023 / (56 x 100 number of atoms)

100 g of Fe contains = 1.0753 x 1024 number of atoms

Therefore, 100 grams of sodium contains more number of atoms than 100 grams of iron.

Answer 2

Answer:

Que. Find out number of moles in 32g of flourine atom.

Que. Calculate number of particles 8 g of oxygen molecule.

Que. Which have more number of atoms 100g of Na or 100g of Fe. ( Given that At. Mass of Na = 23u ; Fe = 56u.

Que. Calculate the number of Aluminium ions present in 0.051g of Aluminium oxide.

Help me please

need all answers

And wants correct ans