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The unit of length convenient on the atomic scale is known as an angstrom and is denoted by Å : 1 Å = 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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Answer» Volume of one hydrogen atom = 4/3πr3 = 4/3 x 3.14 x (0.5 x 10-10)m3 = 5.23 x 10-31 m3. According to Avogadro's hypothesis, one mole of hydrogen contains 6.023 x 1023 atoms. Atomic volume of 1 mole of hydrogen atom = 6.023 x 1023 x 5.23 x 10-31 = 3.15 x 10-7 m3. |
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