GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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6.022 x 1023 particles of any substance
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1 gram of a substance
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1 mL of a substance
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None of the above
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Detailed explanation-1: -One mole of a substance is equal to 6.022 × 10²³ units of that substance (such as atoms, molecules, or ions). The number 6.022 × 10²³ is known as Avogadro’s number or Avogadro’s constant.
Detailed explanation-2: -One mole of any substance contains 6.022×1023 atoms/molecules.
Detailed explanation-3: -One mole of any substance contains 6.02 X 1023 units of that substance. Equally important is the fact that one mole of a substance has a mass in grams numerically equal to the formula weight of that substance.
Detailed explanation-4: -A mole is defined as the number of atoms in 12 grams of Carbon-12. The number of atoms or molecules in a mole is known as Avogadro’s number, and is equal to 6.022 x 1023. A mole is the SI unit for amount of a pure substance.