for compounds which may not be visible after the paper chromatography a compound is used to stain the paper in other to make the separated compound visible under UV light or the naked eye what is the name of the compound​

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

What is the molar mass of potassium nitrate, kno3

Connect the whole numbers on the periodic table to indicate what they represent?