Calculate the concentrations of H3O+ and OH- ions in a 0.050 M Ba(OH)2 solution. a. [H3O+ ] = 0.050 M, [OH- ] = 0.050 M b. [H3O+ ] = 1.0 ´ 10-7 M, [OH- ] = 0.10 M c. [H3O+ ] = 2.0 ´ 10-13 M, [OH- ] = 0.050 M d. [H3O+ ] = 1.0 ´ 10-13 M, [OH- ] = 0.10 M e. [H3O+ ] = 0.10 M, [OH- ] = 1.0 ´ 10-13 M

This flow chart shows the amount of energy that is emitted by each type of light. ultraviolet > blue light > yellow light > red light (maximum energy) (minimum energy) in an experiment, shining which type of light on a strip of metal would be least likely to produce the photoelectric effect? ultraviolet light dim blue light bright red light bright yellow light

Which explanation is true about what happens to a ray of light when it strikes a mirror? a. a light ray is transmitted toward a mirror at a certain angle. the light ray is then reflected by the mirror at an equal angle but in the opposite direction of the transmitted ray. b. an incident ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then reflected at an angle equal to the angle of incidence but on the opposite side of the perpendicular line. c. a reflecting ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then refracted at an angle equal to the angle of the reflecting ray and on the same side of the perpendicular line. d. an incident ray strikes a mirror at an angle with a line parallel to the mirror. the light ray is then transmitted at an angle equal to the angle of incidence but on the opposite side of the parallel line. you so much! : -d take the time to try and answer correctly.

Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2