A film of soapy water (n = 1.33) on top of a plastic cutting board (n > 1.33) has a thickness of 243 nm. What color is most strongly reflected if it is illuminated perpendicular to its surface? violet (380 nm ≤ λ < 450 nm) blue (450 nm ≤ λ < 495 nm) green (495 nm ≤ λ < 570 nm) yellow (570 nm ≤ λ < 590 nm) orange (590 nm ≤ λ < 625 nm) red (625 nm ≤ λ ≤ 750 nm)

Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.