Chemical Thermodynamics — Chemistry STD 12 Science — Question
Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryChemical Thermodynamics2 Marks
Question
What are different units of energy and work ?
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Answer
$\begin{aligned} & 1 J =1 kgm ^2 s ^{-2} ; 1 Pa =1 kg m ^{-1} s ^{-2} \\ & 1 bar =10^5 Pa =10^5 kg m ^{-1} s ^{-2}=10^5 Nm ^{-2} \\ & \begin{aligned} & 1 dm ^3 \text { bar }= dm ^3 \times 10^5 kg m ^{-1} s ^{-2} \\ & \begin{aligned} 1 dm ^3 \text { bar } & = dm ^3 \times 10^5 kg m ^{-1} s ^{-2} \\ & = m ^3 \times 10^{-3} \times 10^5 kg m ^{-1} s ^{-2} \\ & =100 kg m ^2 s ^{-2} \\ & =100 J \end{aligned} \\ & 1 cal =4.184 J \text { }\end{aligned}\end{aligned}$
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