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Class 11
Physics
Unit & measurment
the unit of length convenient on the atomic scale...

Question:
The unit of length convenient on the atomic scale is known as an angstrom and is denoted by Å : 1Å = 10^-10 m. The size of a hydrogen atom is about 0.5 Å what is the total atomic volume in m³ of a mole of hydrogen atoms?

Answer:

Radius of hydrogen atom, r = 0.5 Å = 0.5 × 10^-10 m

Volume of hydrogen atom = 4/3 π r³

= 4/3 x 22/7 x (0.5 x 10^-10)³

= 0.524 x 10³⁰ m³

1 mole of hydrogen contains 6.023 × 10²³ hydrogen atoms.

∴ Volume of 1 mole of hydrogen atoms = 6.023 × 10²³ × 0.524 × 10^-30

= 3.16 × 10^-7 m³

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The unit of length convenient on the atomic scale is known as an angstrom and is denoted by Å : 1Å = 10^-10 m. The size of a hydrogen atom is about 0.5 Å what is the total atomic volume in m³ of a mole of hydrogen atoms?

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Question: The unit of length convenient on the atomic scale is known as an angstrom and is denoted by Å : 1Å = 10-10 m. The size of a hydrogen atom is about 0.5 Å what is the total atomic volume in m3 of a mole of hydrogen atoms?

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Question:
The unit of length convenient on the atomic scale is known as an angstrom and is denoted by Å : 1Å = 10^-10 m. The size of a hydrogen atom is about 0.5 Å what is the total atomic volume in m³ of a mole of hydrogen atoms?