Question

2. Which has more number of
atoms, 100 grams of sodium or
100 grams of iron (given, atomic
mass of Na = 23 u Fe = 56 u)?
​

Answer 1

Answer:

here the answer

Explanation:

iron has more atomic mass

Answer 2

Explanation:

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

= 2.6182 x 1024 number of atoms

Again, atomic mass of Fe = 56 u (Given)

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

= 1.0753 x 1024 number of atoms

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

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