The balanced reaction between aqueous nitric acid and aqueous strontium hydroxide is a. hno3(aq) + sr(oh)2(aq) → sr(no3)2 (aq) + h2 (g) b. hno3(aq) + sr(oh)2 (aq) → h2o (l) + sr(no3)2 (aq) c. hno3 (aq) + sroh (aq) → h2o (l) + srno3(aq) d.2hno3 (aq) + sr(oh)2 (aq) → 2h2o (l) + sr(no3)2(aq)

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

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.