The balmer thermometer uses the atomic transitions of what element to measure the temperature of stars? A. Helium
B. Gamma rays
C. Hydrogen
D. Nitrogen
E. Water

What is the smallest component or the most basic building block of any element ? a. an atom, b. a compound c. gas d. element

Asolution is made by dissolving 25.5 grams of glucose (c6h12o6) in 398 grams of water. what is the freezing point depression of the solvent if the freezing point constant is -1.86 °c/m? show all of the work needed to solve this problem.

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.