How much potassium permanganate (KMnO4) should you weigh out in order to prepare 0.50L of a 3.5M solution? The molar mass of KMnO4 is 158g/mol. a) 1.8mol b) 280g c) 7.0mol

Match each object to its description: a. coma of a comet b. comet tail c. oort cloud haze surrounding a nucleus created by solar wind. hypothetical sphere around the solar system

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line