Thin-layer chromatography was performed and four spots were visualized on the glass slide. The substance with which Rf value was least soluble in the stationary phase? A) Rf = .2 B) Rf = .7 C) Rf = .85 D) Rf = .5

i would say the answer is food.

hope this !

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer

i think the answer is tomato juice? not entirely sure though