GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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6.02 x 1023
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58
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11
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17
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Detailed explanation-1: -O molecules contains 6.022 x 1023 molecules. 1 mole contains 6.022 x 1023 entities (Avogadro’s number) Concept 1. The meaning and usefulness of the mole Page 2 2 • One mole of NaCl contains 6.022 x 1023 NaCl formula units.
Detailed explanation-2: -Explanation: One mole represents 6.022∙1023 separate entities, just like one dozen represents 12 objects. So, if there are 6.022∙1023 H2O molecules, that is the same as one mole of water.
Detailed explanation-3: -The number of formula units in 1mole(58. 5g) 5 g ) of NaCl N a C l is 6.022×1023 6.022 × 10 23 . Thus, the number of formula units of NaCl N a C l in 1.1×10−4g 1.1 × 10 − 4 g is equal to 6.022×102358.5×1.1×10−4g=1.13×1018 6.022 × 10 23 58.5 × 1.1 × 10 − 4 g = 1.13 × 10 18 formula units.
Detailed explanation-4: -Molar Mass of a Compound This means that the molar mass of NaCl is 58.44 g and it will contain 6.022 × 1023 formula units of NaCl, or one mole of NaCl.
Detailed explanation-5: -Answer and Explanation: If one mole of NaCl will have 6.022×1023 6.022 × 10 23 molecules, then 1.5 moles will have: 1.5moles×6.022×1023molecules/mole=9.03×1023 1.5 m o l e s × 6.022 × 10 23 m o l e c u l e s / m o l e = 9.03 × 10 23 molecules.