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The mathematical statement of the first law of thermodynamics with the usual notation is
The mathematical statement of the first law of thermodynamics with the usual notation is
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In older physics textbooks, you might see \(\Delta U = q - w\).
This is because in physics, work is often defined as work done by the system.
In modern chemistry (IUPAC), we always use \(\Delta U = q + w\).
This is because in physics, work is often defined as work done by the system.
In modern chemistry (IUPAC), we always use \(\Delta U = q + w\).
Updated On: Apr 29, 2026
- \(\Delta U = w - q\)
- \(q = \Delta U \times w\)
- \(W = q + \Delta U\)
- \(\Delta U = q / w\)
- \(\Delta U = q + w\)
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The Correct Option is
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