biography
| name: |
Hess, Germain Henri
|
| sex:
| male
|
| lived:
| (1802–50)
|
| biography:
| Chemist, born in Geneva, SW Switzerland. As professor of chemistry at St Petersburg, he formulated Hess's law (1840), which states that the net heat evolved or absorbed in any chemical reaction depends only on the initial and final stages. It was a forerunner of the more complete law of the conservation of energy. |
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