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- For a response to a fire in a laboratory setting the following procedure should be followed: A. (R) Rescue anyone in immediate dangerB. (A) Alarm, or Alert others of the fire, pull a pull station, call X2600C. (C) Confine, the fire by closing doors, windows, fume hood sashesD. (E) Extinguish, or Evacuate the laboratoryE. Follow the R-A-C-E acryonym in all fire situationsIf we wanted to know how “red” a red liquid solution is, we would use a light transmittance measurement. Based on the lab, what device would be used? a) manometer b) chromatogram c) spectrophotometer d) manometer and spectrophotometerWhich of the following is not required for a UV-vis absorption spectrophotometer? Group of answer choices camera detector monochromator light source
- What is jack-o'-lantern ?Why do you need to move the lever of the aperture diagram all the way to the left (smallest value) before you start viewing your sample?Add 2 teaspoons of detergent, 1 teaspoon of salt, and ½ cup of water to one of the plastic cups. Stir well. Reseal the bag. Making as few soap bubbles as possible, gently mash the fruit for another minute. Place the coffee filter inside the second plastic cup. Open the bag of mashed-up fruit and pour it into the coffee filter. Gently squeeze the remaining liquid into the cup. Add rubbing alcohol to the cup of extracted fruit liquid. To do this, carefully pour down the edge of the cup the same amount of ice cold rubbing alcohol as there is liquid. This separates the DNA from the rest of the fruit cellular debris If you eat DNA all the time, why aren’t you harmed by it? What implication does this have on the commercial properties of DNA in your hair conditioner, nutritional supplements, skin cream, or genetically modified plants and animals? Strawberries are octoploid. Bananas are triploid. Kiwi fruits are diploid. How does ploidy level influence the amount of DNA in each cell?
- Add 2 teaspoons of detergent, 1 teaspoon of salt, and ½ cup of water to one of the plastic cups. Stir well. Reseal the bag. Making as few soap bubbles as possible, gently mash the fruit for another minute. Place the coffee filter inside the second plastic cup. Open the bag of mashed-up fruit and pour it into the coffee filter. Gently squeeze the remaining liquid into the cup. Add rubbing alcohol to the cup of extracted fruit liquid. To do this, carefully pour down the edge of the cup the same amount of ice cold rubbing alcohol as there is liquid. This separates the DNA from the rest of the fruit cellular debris. Observe the cloudy, white substance that forms on top of your fruit extract. DNA is not soluble in alcohol (especially if it is very cold), so where is the DNA? Tilt the cup 45 degrees. Collect the DNA using the plastic coffee stirrer/wooden stick/spoon. Why can you see big globs of DNA now, but you don’t see them when you’re eating your food? Why is it important for scientists…Why is smoke considered as a matterFlame Test (Unknown) View the Unknowns to see the results of the flame test. Record Your Observations (clearly and neat hand writing please)
- In oil and gas field , safety in work place is needed . Why?How do photopigments separate when performing paper chromatography? Most soluble pigment will stay lower on the paper Heavier pigment will stay lower on the paper Most soluble pigment will stay higher on the paper Heavier pigment will stay higher on the paperWhat does the thermal noise mean?