Calculate the number of moles of ethanol in a 100.0 ml sample of an overproof rum that is 85.0% ethanol by volume. assume that the remainder is water

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