What did democritus teach? a that all matter was composed of tiny atoms b that all mater was composed of earth, fire, water, and air c that atoms could be divided into smaller particles d that experiments should be done in a systematic way

If you have 5.25 grams of methane (ch4), how many grams of co2 will you produce ?

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.

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?