L'azote liquide L'azote liquide est utilisé dans de
nombreux domaines pour son pouvoir
réfrigérant. Sous la pression normale
(1013 hPa), la température d'ébullition
de l'azote est de - 196°C.
a. Sous quel état physique se trouve
l'azote en conditions ordinaires
(1013 hPa et 20 °C)?
b. Expliquez pourquoi ce liquide doit
être conservé dans des bonbonnes
isothermes.​

When svante arrhenius first proposed his acid-base theory, he was a doctoral candidate. his professors thought his ideas were unfounded. within a decade, the arrhenius theory of acid-base was widely accepted and praised within the scientific world. arrhenius defined acids as compounds having ionizable hydrogen and bases as compounds with ionizable a) barium. b) hydronium. c) hydroxide. d) oxygen.

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?

Which of the following are good traits of a hypothesis? it will be able to be testedit can predict an outcomeit will explain the observationsall of these