a) Podemos identificar uma solução alcalina através da sua reação com o calcário. b) O hidróxido de sódio é um exemplo de uma solução alcalina. c) Uma solução alcalina contém dissolvidas substâncias que designamos por bases. d) As soluções ácidas são escorregadias ao tato.

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.

Achemist 16 drop copper metal from copper chloride solution. the chemist place is 0.50 g of aluminum foil in a solution containing 0.75 g of copper (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction?

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.