80 Sel de mer
On estime que les mers et océans sur Terre
occupent un volume de 1 340 million...
Mathematics, 26.04.2021 14:00 akornegay2
80 Sel de mer
On estime que les mers et océans sur Terre
occupent un volume de 1 340 millions de km?.
Leur salinité moyenne est d'environ 35 grammes
par litre. Cela signifie qu'un litre d'eau de mer
contient en moyenne 35 g de sel.
a. Explique pourquoi un kilomètre-cube est
parfois appelé un téralitre.
(Rappel : 1 L = 1 dm)
b. Calcule, en tonnes, la masse de sel que
contient l'ensemble des mers et océans.
c. On appelle exalitre la quantité 100 litres.
Convertis le volume total d'eau de mer sur la
planète en exalitres.
Quelle est la réponse du petit à
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