19. यदि जल का अणु द्रव्यमान 18 u है तो 1.8 ग्राम
| जल में अणुओं की संख्या होगी-
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Answer:
0.6*10^23
Explanation:
Mole of water for given info.=1.8/18
=0.1 mol
For no. of molecules,
0.1*6.023*10^23=0.6*10^23 molecules of water
Hope this helps
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