One liter of a phosphate buffer, 0.100 m. ph 7, is required. a) how would this buffer prepared if the reagents available are sodium dihydrogen phosphate (nah2po4 x h2o) and disodium hydrogen phosphate (na2hpo4) present as solids? distilled water is also available. b) how would this buffer be prepared if the reagents available are phosphoric acid (h3po4) and 1.5 m naoh? concentrated phosphoric acid is 15 m. distilled water is also available.

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.

Geothermal energy for industrial use is available almost anywhere. a.true b.false

Which buffer would be better able to hold a steady ph on the addition of strong acid, buffer 1 or buffer 2? explain. buffer 1: a solution containing 0.10 m nh4cl and 1 m nh3. buffer 2: a solution containing 1 m nh4cl and 0.10 m nh3