1) Propose un protocole permettant de mesurer la masse de 10 mL de chaque liquide, (matériel : deux éprouvettes graduées de 10 mL, deux béchers, une
balance, deux pipettes pasteur, deux flacons sans étiquettes)

This is the substance(s) formed in a chemical reaction.

Automobile fuel efficiency is often measured in miles that the car can be driven per gallon of fuel (mpg). heavier cars tend to have lower fuel efficiencies (lower mpg ratings). which variable (weight or fuel efficiency) is most naturally considered the explanatory (predictor) variable in this context?

Atoms in a molecule are bonded together by sharing gaining or losing_