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एक पदार्थ के 25 ग्राम के नमूने को 300 जूल ऊष्मा देने पर इसका ताप `25^(@)C` से बढ़कर `45^(@)C` हो जाता है। पदार्थ का अणुभार 50 है। ज्ञात कीजिये-नमूने की (A) ऊष्मा धारिता, (B) विशिष्ट ऊष्मा धारिता, (C ) मोलर विशिष्ट ऊष्मा धारिता।

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(A) ऊष्मा धारिता
`=(Q)/(DeltaT)=(300" जूल")/((45-25)^(@)C)=15" जूल/".^(@)C`
`=(15)/(4.2)"कैलोरी/".^(@)C=3.57"कैलोरी/".^(@)C`
(B) विशिष्ट ऊष्मा धारिता,
`c=("ऊष्मा धारिता")/("द्रव्यमान ")=(3.57)/(25)`
`=0.1428"कैलोरी/".^(@)C`
(C ) मोलर विशिष्ट ऊष्मा धारिता,
`C=Mc=50xx0.1428=7.14` कैलोरी/मोल`.^(@)C`

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