Calcium reacts rapidly with cold water to give off hydrogen gas and form a white precipitate called calcium hydroxide as shown in the equation below. Which element could substitute calcium and react more vigorously?

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.

Which of the following compounds would be expected to have the strongest ionic bonds? a)the compound that has b)the largest ions with the greatest charge c)the compound that has d)the largest ions with the least charge the compound that has the smallest ions with the greatest charge the compound that has the smallest ions with the least charge