Screenshot 2023-12-08 at 11.06.40 PM

Question 5 Which property of laser light is NOT correctly defined/described? extremely bright: high power at one wavelength monochromatic: emits one wavelength of light collimated: parallel rays of light polarized: electric field oscillates between two perpendicular planes

Please answer both questions

3. Discuss the relationship of refractive index to molecular polarizability.

A lens is placed in air and then submerged in ethanol. Draw the path of light as it travels in air and in ethanol. *Your drawing should clearly show the difference of the path of light as it travels through these two mediums.

During this practical, we will be measuring the absorbance of Bromocresol green combined with albumin using a spectrophotometer. At what wavelength will we make this measurement?Question 3 Select one:a.320 nmb.400 nmc.628 nmd. 595 nme. 511 nm

A protein’s concentration can be determined spectrophotometrically by mixing it with an indicator called a Bradford reagent and measuring the amount of light absorbed by the protein. Use the plot below to determine the mass of protein (in micrograms, μμg ) in 100.0 mL of the solution if its absorbance is 0.398. A.  52 B.  3.1 C.  2.4 D.  0.52 E.  0.031

10. In what ways can a refractive index be used to characterize a liquid sample? 11. Describe how to adjust the light for measurement in the Abbe Refractometer

Cathode Ray Discharge Tube Demonstration An Exploration (Because of the DANGER involved and the fragile nature of the device, this is a demonstration rather than a true Exploration) Background information: Until recently, almost all televisions used a device known as the cathode ray tube, or CRT, to display the images. In a cathode ray tube, the "cathode" is a heated filament (not unlike the filament in a normal light bulb). The heated filament is in a vacuum created inside a glass envelope or "tube." The "ray" is a stream of electrons that naturally pour off the heated cathode into the vacuum. The Cathode Ray Tube is powered by an extremely high voltage DC current system and is dangerous! Electrons are negative. The anode is positive, so the anode attracts the electrons pouring off the cathode. The electrons hit the phosphorus screen and generate green photons, which we can see. Safety: The cathode ray discharge tube is not a toy and should be handled with a lot of precaution. An…

9. The LabQuest SpectroVis spectrophotometer is used to measure the intensity of a light source passing through a sample cell. If 41% of the light is absorbed by a solution, 59% of the light is transmitted. What is the value for absorbance (A)? 0.89 0.528 0.23 0.387

What is absorbance? Group of answer choices The amount of light not passing through a sample measured in units of M-1⋅cm-1. The amount of light passing through a sample measured in units of M-1. The amount of light passing through a sample measured in units of M-1⋅cm-1. The amount of light not passing through a sample measured in units of M-1. The amount of light not passing through a sample measured in units of J/s. The amount of light passing through a sample measured in units of J/s. The amount of light passing through a sample with dimensionless units. The amount of light not passing through a sample with dimensionless units.