How many calories are needed in total to melt 2.00 g of ice at 0.0˚C, raise the temperature of the water to 100. ˚C, and change all the water to steam at 100. ˚C?

What are the chemical names of these compounds? ke: mg3n2: reset next

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.

Draw the lewis dot structure for each of the following polyatomic ions