Determina cuantos gramos de agua se necesitan para disolver 40 g de café si se quiere obtener una disolución a 4% en masa de café

Rutherford's experiment indicated that matter was not as uniform as it appears what part of his experimental results implied this idea

Suppose you mix one mole of sulfuric acid (h2so4) with 1 mole of sodium hydroxide(naoh). why does the ph of the solution remain below 7? ( explain so i can get better understanding! )

Which factor is likely to impact the possible number of compounds? presence of unlimited number of elements in the periodic table the inability of atoms to align perfectly with other atoms the ability of all elements to react with every other element all elements being equally reactive