Number of molecules in 0.25 mole potassium
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No of molecules = moles ☓ 6.022 ☓ 10^23
No of molecules = 0.25 ☓ 6.022 ☓ 10^23
No of molecules = 1.505 ☓ 10^23
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that is 0.25 × Na(avagadro no.) and value of Na is 6.023× 10 raised to the power 23
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