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Chemistry - Thermodynamics - I Question with Solution | TestHub

ChemistryThermodynamics - IFirst law of ThermodynamicsEasy2 minPYQ_2020

ChemistryEasysingle choice

Copper metal has a specific heat of 0.385 J/ $g ° C$ and has melting point of 1083°C. Calculate the amount of heat required to raise the temperature of 22.8 g of Cu from 20.0 $° C$ to 875 $° C$ .

Options:

Answer:

Solution:

$Q = m C . (Δ T)$
So $Q = 22.8 g \times 0.385 J g^{- 1} ° C^{- 1} \times (875 ° C - 20 ° C)$
$= 22.8 \times 0.385 \times 855 J = 7.50 \times 1 0^{3} J$
$= 7.50$ kJ.

Stream:NTA_ABHYAS_NEETSubject:ChemistryTopic:Thermodynamics - ISubtopic:First law of Thermodynamics

⏱ 2mℹ️ Source: PYQ_2020

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