El cobre (Cu) y el oxígeno (O2) se combinan en una proporción 4:1 para formar óxido de cobre (CuO). En un experimento se obtuvieron los siguientes resultados, verifique en cada caso si se cumple con la ley de las proporciones definida ​

Litmus paper is made from water-soluble dyes which are extracted from lichens. this paper is used as an acid-base indicator. which of these common household substances would turn blue litmus paper red? a) bleach b) lye c) soap d) vinegar

What is the work done by the electric force to move a 1 c charge from a to b?

Which best describes the activation energy of a chemical reaction? a. the combined energy of all the reactants b. the amount of energy required for a reaction to occur c. the difference in energy between products and reactants d. the potential energy stored in the bonds of reactants and products