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A comment on Joachim Roenneberg, who foiled Nazi nuclear plan, has died.

Re:Joachim Roenneberg, who foiled Nazi nuclear plan, has died by PhasmaFelis on Sunday October 21, 2018 @09:44PM (#18271559)
Amused that the article calls heavy water "a hydrogen-rich substance". As far as I'm aware it has exactly the same amount of hydrogen as regular water, by definition.

Presumably the author was going for "neutron-rich" but misremembered.

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Re:Joachim Roenneberg, who foiled Nazi nuclear plan, has died by DuskStar on Sunday October 21, 2018 @11:00PM (#18271865)
It does have more hydrogen (by weight) than regular water, just not by moles.
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Re:Joachim Roenneberg, who foiled Nazi nuclear plan, has died by flashman on Monday October 22, 2018 @01:14AM (#18272341)
Correct. A greater fraction of its weight is hydrogen due to the extra neutron, but it contains the same number of hydrogen atoms.

Heavy water masses 20g/mol versus 18g/mol for regular water.

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