Hi guys can someone help please I didn’t this three time already but I still got it wrong can someone please give me the answers or examples sorry guys I have two more I just need help

Answer:
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Q.17 7.23*10²⁴ particles of Cl2 = 12 moles of Cl2
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Q.18 2.89*10²⁴ molecules of water = 4.8 moles of water
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Q.19 7.95*10²³ molecules of C2F2H4 = 1.32 moles of C2F2H4
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Q.20 1.45*10²⁴ molecules of AgCl = 2.4 moles of AgCl
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