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Al₂NO₃ = 116 H₂SO₄=98 K₂Cr₂O7 =294 Al₂NO₃ অণুর ভর = 116/6.023*10²³ = 1.92×10-²² H₂SO₄ অণুর ভর = 98/6.023*10²³=1.627×10-²² K₂Cr₂O7 অণুর ভর = 294/6.023*10²³=4.88×10-²² ভর গ্রাম এককে এসেছে।
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