Émettre vos hypothèses quant à l'action de l'eau sur une solution très concentrée et d'après vous comment va changer le pH de la solution en ajoutant de l'eau ? :

What is the value of the standard enthalpy of formation of an element in its most stable form?

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules

What energy conversion occurs when a sling shot is used to shoot a rock across the room? (2 points) question 2 options: 1) stored mechanical energy is converted to mechanical energy. 2) stored mechanical energy is converted to radiant energy. 3) gravitational energy is converted to radiant energy. 4) gravitational energy is converted to mechanical energy.