1. When a solution appears to be red in color, does the solution absorb or transmit...
1. When a solution appears to be red in color, does the solution absorb or transmit red light strongly? Explain
2.If a Spec 20 is going to be used routinely at wavelengths above 600 nm, a different phototube is needed. Explain why this might be necessary and what the characteristics of this new phototube might be
Homework Answers
according to Chegg's guidelines if more than one question is asked that we have to answer only the first question
answer1: when white light falls on a solution it observes all the frequencies of the light (visible light) now the color which we see is the one which is transmitted or reflected back the frequency of one of which color it appears. So, red light is transmitted by the solution because of that it is appearing red in color.
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1. When a solution appears to be red in color, does the
solution absorb or transmit...
1. Rank the following colors of visible light according to increasing energy: Red, Green, Blue. In...
1. Rank the following colors of visible light according to increasing energy: Red, Green, Blue. In other words, the color of light that is lowest energy is listed first, and the color of light that is highest in energy is listed last. 2. The most intense line in the emission spectrum for sodium appears at a wavelength of 589 nm. What color would you expect to observe when a solution that contains sodium ions is heated strongly in the flame...
1. Methyl orange, HMO, is a common acid-base indicator. In solution it ionizes according to the...
1. Methyl orange, HMO, is a common acid-base indicator. In solution it ionizes according to the equation: HMO(aq) = H(aq) + MO"(aq) red yellow If methyl orange is added to distilled water, the solution turns yellow. If a drop or two of 6 M HCl is added to the yellow solution, it turns red. If to that solution one adds a few drops of 6 M NaOH the color reverts to yellow a. Why does adding 6 M HCl to...
answer and explain 3,4,5&7 please. help is much appreciated. just some deeper thinking and application into...
answer and explain 3,4,5&7 please. help is much
appreciated. just some deeper thinking and application into biology
concepts
3. Humans have disrupted the cycling of several nutrients (C N, P, S, etc). Choose three nutrients and fill in the following table. (3pts) 0.5pt per middle or right column Nutrient Human disruption Function of the nutrient at the cellular level Carbon Phosphorous Nitrogen 4. Climate change and other anthropogenic impacts on the ecosphere are predicted to impact NPP. Fill out the...
PRE-LABORATORY QUESTIONS (For full credit show your calculations) 1. List the expected color of light and the...
PRE-LABORATORY QUESTIONS (For full credit show your calculations) 1. List the expected color of light and the corresponding wavelength (nm) associated with each cation (use Table 1) Rubidium, Rb Cesium, Cs 2. Calculate the energy associated with the light emitted by each of the elements above (sue equations 1 and 2) Rubidium, Rb Cesium, Cs 11:17 $3.us-east-1.amazonaws.com Flame Tests&Elecrn Ceniguaion 1 of 7 FLAME TESTS & ELECTRON CONFIGURATION INTRODUCTION AND BACKGROUND The chemistry of an element strongly depends on the...
(cach question: 1 point) 1) If you see a red leaf, what color(s) of light in...
(cach question: 1 point) 1) If you see a red leaf, what color(s) of light in the visible light spectrum is/are being reflected? A) red B) all colors except red C) all colors D) no colors Answer: 2) permit CO2 to enter the leaf and O2 to escape. A) Mesophyll cells B) Thylakoids C) Stomata D) Chloroplasts Answer: 3) Chlorophyll is found in which part of the plant cell? A) stroma B) cytoplasm C) thylakoid D) plasma membrane Answer: 4)...
Hello can you answer the incorrect question ? X Incorrect 1) What group does the Benedict's...
Hello can you answer the incorrect question ?
X Incorrect 1) What group does the Benedict's test oxidize? A. A ketone B. More than one of these C. An ether D. An aldehyde X (Your Answer) X Incorrect 3) If you have a polysaccharide, what color is it when mixed with lodina? A. Deep brown X (Your Answer) B. Deep violet C. Light Brown D. Prussian red X Incorrect 4) What sugar was negative to the Benedict's test? A. Fructose...
69. THE ENDOSPORE itself is might to stain_?_ color in an ACID FAST stain. (a) HOT...
69. THE ENDOSPORE itself is might to stain_?_ color in an ACID FAST stain. (a) HOT pink (c) purple (d) green (e) baby-blue 70. All STAINS begin with a properly prepared _?_ . (a) dye (b) slide (c) smear (d) dog (e) cat 71. Which of the following is an ENDOTOXIN found in some microbes? This is results in fever, blood vessel dilation and possibly SHOCK when it is released into the human blood stream? (a) the plasma membrane (b)...
Help on prelab NOTE! There are FOUR (4) pages in this pre-lab! PRE-LAB WORKSHEET FOR ENZYME...
Help on prelab
NOTE! There are FOUR (4) pages in this pre-lab! PRE-LAB WORKSHEET FOR ENZYME LAB To be completed prior to the online prelab esercise 1 ) Suppose that the diagram below represents what occurs during a chemical reaction e) Which letter points tq the prodact? print e ore , d 3) (c) Which letter points to the enzyme? (d) Which letter points to the enzyme's active site? (e) Which letter points to the enzyme's substrate? Note: Some letters...
Laboratory goggles must be worn! A) Preparation of Solutions from Concentrated Solution In this part the...
Laboratory goggles must be worn! A) Preparation of Solutions from Concentrated Solution In this part the experiment you will prepare several dilute solutions from the more concentrated cobalt nitrate solution 1. Read the label on the provided cobalt nitrate solution and record the molarity accurately. su-olu 563/ 316.603:48 صلاح 2. 3. 4. Molarity of Ca(NO3)2 solution 182.95 g/mol Obtain a 25-ml buret. Examine its markings, the line that spans the entire circumference occur for each milliliter. The smaller lines indicate...
100. Flare is: (a) the widest frequency of light that can enter an objective (b) the...
100. Flare is: (a) the widest frequency of light that can enter an objective (b) the bending of light as it passes through different substances (c) wavelength/2NA (d) when the beam of light "spreads" wider than the objective's "hole" (e) wavelengths of light too short to enter the objective 101. Coccobacillus shaped bacteria are considered to be_?_ (a) cocci (b) bacilli (c) diplobacilli (d) diplococci (e)answers a and b only 102. This microscope is used for cheap and quick "'diagnosis"...
1. Rank the following colors of visible light according to increasing energy: Red, Green, Blue. In other words, the color of light that is lowest energy is listed first, and the color of light that is highest in energy is listed last. 2. The most intense line in the emission spectrum for sodium appears at a wavelength of 589 nm. What color would you expect to observe when a solution that contains sodium ions is heated strongly in the flame...
1. Methyl orange, HMO, is a common acid-base indicator. In solution it ionizes according to the equation: HMO(aq) = H(aq) + MO"(aq) red yellow If methyl orange is added to distilled water, the solution turns yellow. If a drop or two of 6 M HCl is added to the yellow solution, it turns red. If to that solution one adds a few drops of 6 M NaOH the color reverts to yellow a. Why does adding 6 M HCl to...
answer and explain 3,4,5&7 please. help is much
appreciated. just some deeper thinking and application into biology
concepts
3. Humans have disrupted the cycling of several nutrients (C N, P, S, etc). Choose three nutrients and fill in the following table. (3pts) 0.5pt per middle or right column Nutrient Human disruption Function of the nutrient at the cellular level Carbon Phosphorous Nitrogen 4. Climate change and other anthropogenic impacts on the ecosphere are predicted to impact NPP. Fill out the...
PRE-LABORATORY QUESTIONS (For full credit show your calculations) 1. List the expected color of light and the corresponding wavelength (nm) associated with each cation (use Table 1) Rubidium, Rb Cesium, Cs 2. Calculate the energy associated with the light emitted by each of the elements above (sue equations 1 and 2) Rubidium, Rb Cesium, Cs 11:17 $3.us-east-1.amazonaws.com Flame Tests&Elecrn Ceniguaion 1 of 7 FLAME TESTS & ELECTRON CONFIGURATION INTRODUCTION AND BACKGROUND The chemistry of an element strongly depends on the...
(cach question: 1 point) 1) If you see a red leaf, what color(s) of light in the visible light spectrum is/are being reflected? A) red B) all colors except red C) all colors D) no colors Answer: 2) permit CO2 to enter the leaf and O2 to escape. A) Mesophyll cells B) Thylakoids C) Stomata D) Chloroplasts Answer: 3) Chlorophyll is found in which part of the plant cell? A) stroma B) cytoplasm C) thylakoid D) plasma membrane Answer: 4)...
Hello can you answer the incorrect question ?
X Incorrect 1) What group does the Benedict's test oxidize? A. A ketone B. More than one of these C. An ether D. An aldehyde X (Your Answer) X Incorrect 3) If you have a polysaccharide, what color is it when mixed with lodina? A. Deep brown X (Your Answer) B. Deep violet C. Light Brown D. Prussian red X Incorrect 4) What sugar was negative to the Benedict's test? A. Fructose...
Help on prelab
NOTE! There are FOUR (4) pages in this pre-lab! PRE-LAB WORKSHEET FOR ENZYME LAB To be completed prior to the online prelab esercise 1 ) Suppose that the diagram below represents what occurs during a chemical reaction e) Which letter points tq the prodact? print e ore , d 3) (c) Which letter points to the enzyme? (d) Which letter points to the enzyme's active site? (e) Which letter points to the enzyme's substrate? Note: Some letters...
Laboratory goggles must be worn! A) Preparation of Solutions from Concentrated Solution In this part the experiment you will prepare several dilute solutions from the more concentrated cobalt nitrate solution 1. Read the label on the provided cobalt nitrate solution and record the molarity accurately. su-olu 563/ 316.603:48 صلاح 2. 3. 4. Molarity of Ca(NO3)2 solution 182.95 g/mol Obtain a 25-ml buret. Examine its markings, the line that spans the entire circumference occur for each milliliter. The smaller lines indicate...
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