Question

Which has more number of atoms, 100g of sodium or 100r of iron (given atomic mass of Na = 23 u, Fe = 56 u) ?

Answer 1

Answer:

100 grams of sodium contains more number of atoms than 100 grams of iron

Answer 2

Question :-

Which has more Number of Atoms, 100 g of Sodium (Na) or 100 g of Iron (Fe)?

Answer :-

Given,

Atomic Mass of Sodium (Na) = 23 u ; Iron (Fe) = 56 u

-

Number of Atoms in a Sample of any Element

$\boxed {\bold {\implies \frac{Mass\: of\: the\: Sample}{Atomic\: Mass} \times (6.02 \times 10^{23} )}}$

-

∴ Number of Atoms in 100 g of Sodium (Na)

$\implies \frac{100}{23\: g\: mol^{-1}} \times 6.02 \times 10^{23} = \bold {2.62 \times 10^{24}}$

Number of Atoms in 100 g of Iron (Fe)

$\implies \frac{100}{56\: g\: mol^{-1}} \times 6.02 \times 10^{23} = \bold {1.07 \times 10^{24}}$

-

∴ 100 g of Sodium (Na) contains more Atoms than 100 g of Iron (Fe). . .

--

#HappyLearning!