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Chemistry

NEET ChemistryClass 11Atomic and molecular massesMediumStatement based

Question 7 of 9

Consider the following statements: Which of the statements are correct?

  • Statement I: One atomic mass unit (u) is defined as exactly one-twelfth of the mass of one carbon-12 atom.
  • Statement II: The molar mass of a substance in g mol⁻¹ is numerically equal to its molecular (or formula) mass in u.
  • Statement III: One mole of O₂ gas contains 6.022 × 10²³ oxygen atoms.
  • Statement IV: The atomic mass of chlorine is 35.5 u because every chlorine atom has a mass of 35.5 u.

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