- The number of molecules in a given mass of a substance is proportional to the number of moles, which is calculated as Mass / Molar Mass. - Avogadro's number (approximately 6.022 x 10²³) represents the number of particles (atoms, molecules, etc.) in one mole of a substance.
Which one of the following has different number of molecules ? (All are kept at normal temperature and pressure)
Asked in UPSC NDA 2 2016 · Topic: Inorganic Chemistry (Atomic Structure and Periodicity)
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