GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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6.02 x 1023 atoms of H
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6.02 x 1023 atoms of He
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They are the same
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6.02 x 1023
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Detailed explanation-1: -The correct answer is 6.02 × 1023 molecules of O2. Concept: 6.02 x 1023 molecules of O2 has more mass. In the SI system, mole (symbol, mol) was introduced as the seventh base quantity for the amount of a substance.
Detailed explanation-2: -So the correct answer here is sodium sodium has a molar mass of 23g per mole.
Detailed explanation-3: -A mole, abbreviated as mol, is a measurement of amount used by scientists. One mole is equal to 6.022x1023 units.
Detailed explanation-4: -It represents the number of atoms in one gram atom of an element or the number of molecules in one gram mole of a compound. If we divide the atomic mass of an element by actual mass of its atom, the value is 6.022×1023.
Detailed explanation-5: -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.