Question

no. of atoms in 0.2mole molecules of hydrogen​

Answer 1

From Avogadro's law:

1 mole of any compound or element contains avogadro number of atoms.

Avogadro number = 6.23 x 10²³

So,

No. of atoms in 1 mole hydrogen = 6.23 x 10²³

No. of atoms in 0.2 moles hydrogen = 6.23 x 10²³ x 0.2 = 1.226 x 10²³ atoms.

0.2 moles of hydrogen contains 12.26 x 10²² atoms.

Answer 2

Answer:

The correct answer is 2.4092×10²³ atom.

Step-by-step explanation:

1 mole hydrogen contain 6.023×10²³ molecules

0.2 mole hydrogen contain

=6.023×10²³ ×0.2 molecules

=1.2046×10²³ molecules

Now 1 molecule of hydrogen consists of 2 atom.

1.2046×10²³ molecules of hydrogen consists of

=1.2046×10²³×2 atom

=2.4092×10²³ atom.

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