What is mole concept calculate the number of molecules in 45g of water answaer?
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the molecular mass of a substance expressed in grams is called a mole
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Mole is defined as the amount of a substance, which contains the same number of chemical units (atoms, molecules, ions or electrons) as there are atoms in exactly 12 grams of pure carbon-12. A mole represents a collection of 6.023 x 1023 ( Avogadro's number) chemical units.
18g of water contain=6.02×10^23 moles
1g will have=6.02×10^23/18
45g of water contain=(6.02×10^23×45)/18
18g of water contain=6.02×10^23 moles
1g will have=6.02×10^23/18
45g of water contain=(6.02×10^23×45)/18
rohitrawat1:
but hindi mein chahiye
Kisi bhi substance ki woh amout jis mein exactly utne atoms hote hain jitne ki 12 g of carbon-12 mein hote hain phir chahe woh atoms ho molecules ho ya ions ho use hum 1 mole kehte hain. Ise Avogadro no. Bhi kaha jata hai. This is mole concept bro.
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