3 L'eau oxygénée L'eau oxygénée est un liquide incolore utilisé comme
antiseptique et agent de blanchiment. L'eau oxygénée
peut subir une transformation chimique qui est à l'ori-
gine de son nom : elle se décompose en eau liquide et en
dioxygène gazeux,
1. Identifier le réactif et les produits de cette transforma-
tion chimique
2. Comment va-t-elle se manifester ?​

How have the greenhouse gasses increased from the year 2000 to 2018

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal. b. he is determining chemical properties that are sufficient to identify the metal. c. he is determining physical properties that are insufficient to identify the metal. d. he is determining chemical properties that are insufficient to identify the metal.

Asample of hydrated tin (ii) chloride (sncl2) has a mass of 4.90 g. when it is dehydrated, it has a mass of 4.10 g. which is the correct chemical formula for the hydrate? sncl2•2h2o          sncl2•4h2o          sncl2•6h2o