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- Which color(s) of light does chlorophyll a reflect? a. red and blue b. green c. red d. blueWhat color of light results from the addition of cyan light and red light? green blue white magentaWhat color does an object appear if it absorbs light at both 420-500 nm and at 620-700 nm? a. Red b. Black c. Purple d. Green e. Deep blue
- Assume that you have an “X” solution that you do not know its concentration. But you have other X solutions with known concentrations and you know X solution absorbs maximum light at 575 nm. To calculate the unknown solution concentration, you have done some spectrophotometric measurements and obtained data given below. Prepare a standard curve by using the absorbance of known concentrations (Hint: you can learn how to prepare a standard curve by using Excell from youtube). Calculate the concentration of unknown.Which of the following is luminous?⦁ Star⦁ Bird⦁ Cup⦁ Bat⦁ StaplerA solution containing 2g/liter of a light-absorbance substance in 1 cm cuvette transmits 75% of incident light of a certain wavelength. Calculate the transmission of a solution containing 4g / liter
- An object absorbs Red, Orange, Yellow, and Purple light waves and reflects the remaining. What color do we perceive this object to be? Select one: a. Brown b. Blue-Green c. Pink d. Yellow-GreenMs. Brundage buys a fancy new plant, and brings it home to replace her plastic ones. The action spectrum of the plant's leaves is found in Figure 1 below. Unfortunately it is winter and there is very little natural light. The local hardware store offers her two lighting choices: halogen light or cool white LED. After a little research, she discovers the spectrum of each type of light, as shown in Figure 2. a) Which type of light should Ms. Brundage purchase? Explain. b)The salesperson assures her that her plant most likely will be able to grow under either type of light. Given what you know about plant pigments and photosynthesis, how could this be possible? Explain.Collectively, all the tints, shades and tones of a hue are said to be a (n) _____ color scheme. A. analogous B. monochromatic C. bright or dull D. achromatic
