1. Science

    What is a gel, and what is a sol (as in aerosol, hydrosol,etc.)?
  2. chemistry

    1. Ceramic material made by the sol-gel process involve the reaction of a. water and acids. b. ethanol and water. c. water and metal oxides. d. acids and metal alkoxides. e. water and metal alkoxides. my ans. c 2. The step in the sol-gel process that forms oxygen bridges while...
  3. math

    Purple gel is$ 4.86 for 18 oz green gel is 3 cents more per oz how much for the green gel in a quart size bottle?
  4. Biology

    Grant’s DNA sample has a concentration of 45µg/mL, and he has 350µL of solution. Which of the following answers would allow him to run the proper amount of DNA on a quality control gel? A) He should dilute the sample 1:10 and load 10uL on the gel B) He should complete 2 1:...
  5. pharma medicine

    you are combining 50ml of a 20%sol,150ml of a 15% sol.,and 200ml of a 35% sol.what is the final % concentration of the mixed sol. how many total grams are is the final sol? Grams total= .2*50 + .15*.15 + 200*.35 This is making a big assumption: that the density of the ...
  6. Chemistry

    Aerosol cans contain com- pressed gases that, when released, help propel the contents out of the can. Why is it important to keep aerosol cans from overheating?
  7. Biology

    I'm doing a lab for gel electrophoresis and we added the digests in the wells of the agarose gel Lane 2 – λ Hind III (a standard) Lane 4 – Tube 1 Lane 5 – Tube 2 Lane 6 – Tube 3 Lane 7 – Tube 4 Now will DNA in tube 1 which only has dh20, 10x buffer, and no ...
  8. s

    he a 1.00 m sol'n of nitric acid. how many ml of this sol'n will he need to add to the soil to completely react with 56.8 g of al(oh)3
  9. chemistry

    500g urea aq. Sol. Has mole fraction 0.2 what is molality of sol.
  10. Biology

    We cut a slice of the target gene from the gel which ran electrophoresis. And then purified the gene from the gel by using Gel-M column, WN buffer and WS buffer. After these steps, we ran another electrophoresis of the purified gene and there was no band showed on the picture...
  11. chemistry

    A sol n contains 37g cuso4 and 111g water . Calculate the concentration by mass /c of sol n.
  12. science

    In 91% (by volume) isopropyl alcohol (a large [compared to water], flammable molecule) solution, there are only two substances: the alcohol, and water. So when I poured 50 mL of 91% isopropyl alcohol into a graduated cylinder, how many milliliters were alcohol? How many were ...
  13. chemistry

    solve for the new pressure when each of the following temperature changes occurs, with n and V constant: b. an aerosol can has a pressure of 1.40 atm at 12 celcius.what is the final pressure in the aerosol can if it is used in a room where the temperature is 35 celcius?
  14. Chemistry

    You mix 19.5 gallons of a mixture containing 12 wt% NaCl (sol'n density = 1.0837 g/cm^3) with V2-gallon sol'n that is 20 wt% NaCl (sol'n density = 1.1453 g/cm^3). Needed mixture is 19 wt% NaCl Whats the V2 in gallons? (all solutions are in water so just dealing with NaCl)
  15. math asap

    Purple gel costs 4.86 for 18 oz green gel costs 3 cents more per once how much for the green in a quart size bottle?
  16. Spanish

    22. ¿Te gustan _______ pantalones ___? a. estos/marrones b. rojos/esos c. negros/estos d. el/grises A? 26. Llueve y hace frío hoy. _________ a. Menos mal que tengo una maleta b. Regreso a las tres c. No puedo tomar el sol d. ¿Dónde están mis anteojos de sol? C 27. ¿...
  17. Chemisty

    Aluminum hydroxide forms a positively charged sol. Which of the following ionic substances should be most effective in coagulating the sol? NaCl CaCl2 Fe2(SO4)3 K3PO4
  18. Lab Math

    How to prepare a 0.8% agarose gel with TAE. It does not give the concentration of the TAE so I am not sure how to prepare this gel. Thanks
  19. physics

    A force of 8 N acts on a 2 kg object as it is displaced along the x-axis. The speed of the object when it is at x= 2m is 5 m/s. a) what is the net work done by F(x) on the object as it is displaced from x=2m to x=8m? sol) 8m - 2m = 6m; 6m * 8N = 48 J b) What is the object's ...
  20. Chemistry - enthalpy reivison(help)

    58. When a vehicle is parked in the sunlight on a hot summer day, the temperature inside can approach 55°C. One company has patented a non-CFC propelled aerosol that can be sprayed inside a vehicle to reduce the temperature to 25°C within seconds. The spray contains a ...
  21. Chemistry

    Is it even possible to guess the signs of Delta H, S, and G from only knowing the following information?: - Silica gel is a solid. - Chemically inert. - Highly porous. - Amorphous form of SiO2. - Water vapor is absorbed onto the surface of silica gel and acts as a desiccant to...
  22. spanish

    how do you unscramble these spanish sentences! please help! -tu no hsa tisvo dana -xale se le eyr de al ciadud deny -tamry edase ri a al njgaul -laxe se puhca le doed -sol fosass namsel to a sol leresmu
  23. chemistry - heat absorption (help)

    When a vehicle is parked in the sunlight on a hot summer day, the temperature inside can approach 55°C. One company has patented a non-CFC propelled aerosol that can be sprayed inside a vehicle to reduce the temperature to 25°C within seconds. The spray contains a mixture of...
  24. bio

    I did a DNA fingerprinting lab and I can't understand some of the questions. 1) Different restriction enzymes are isolated from different types of bacteria. What advantage do you think bacteria gain by having restriction enzymes? 2)In your lab, you ran your DNA samples on a 0....
  25. science-please help due first thing tommorw

    the same alkali(sodium hydroxide)can be found in both hair gel and oven cleaner.explain why it is safe to put hair gel on your skin, but not on oven cleaner. plz help!Be as acurate as possible and it has to be an outstanding scientific explanation.
  26. Biology

    Imagine that you collected your data above, threw away the gel, and re-ran PCR again on the same samples, but using a different set of primers. How will the 2nd gel differ from the first since you're using a different set of primers?
  27. biology

    Imagine that you collected your data above, threw away the gel, and re-ran PCR again on the same samples, but using a different set of primers. How will the 2nd gel differ from the first since you're using a different set of primers?
  28. Biochemistry

    I need to copare and contrast gel electrophoresis and paper strip electrophoresis... I know what both of them are, but I need to explain in terms of the charges on the proteins.. and I need to describe the polyacrylamide gel electrophoresis method in terms of mobility??????? ...
  29. chemistry

    1gm of AgNO3 is dissolved in 50ml of h2o. it is titrated with 50ml od sol. agi is precipitated is filtered of.the exces of ki is then titrated with 1/10M KIO3 in the presence of acidic medium until all I->>ICl. it reqires 50ml of the 1/10M KIO3 sol. 20ml of same KI sol ...
  30. Chemistry

    When a vehicle is parked in the sunlight on a hot summer day, the temperature inside can approach 55 deg C. one company has patented a non-CFC propelled aerosol that can be sprayed inside a vehicle to reduce the temperature to 25 deg C within seconds. the spray contains a ...
  31. Chemistry

    When a vehicle is parked in the sunlight on a hot summer day, the temperature inside can approach 55 deg C. one company has patented a non-CFC propelled aerosol that can be sprayed inside a vehicle to reduce the temperature to 25 deg C within seconds. the spray contains a ...
  32. mechanics

    You have 1kg of aluminum (E=69GPa) to make a cylindrical tube with a high Euler buckling load. The tube must have a length L of 0.5m. You can either make a solid tube, or a thin walled tube with a wall thickness, t=0.5cm. The density of aluminum is 2700kg/m3. The tubes are pin...
  33. English

    Just then my Uncle Sol offered Grandma a compliment. "Esther," he said, "that's a beautiful football. Real cott gless." Grandma looked at Uncle Sol with great superiority. "Sol," she said, "listen close, you'll learn something. This cott gless is called a frutt boll, not a ...
  34. chemistry

    if 2.0 x 10-5 mol of sparingly soluble Cu(IO3)2 can dissolve in 2L of a very soluble NaIO3 sol'n, what is the molar concentration of the NaIO3 sol'n? (Ksp=1.4x10-5 for Cu(IO3)2)
  35. chemistry

    if 2.0 x 10-5 mol of sparingly soluble Cu(IO3)2 can dissolve in 2L of a very soluble NaIO3 sol'n, what is the molar concentration of the NaIO3 sol'n? (Ksp=1.4x10-5 for Cu(IO3)2)
  36. Algebra

    A chemist mixed some 20% peroxide sol with some 30% peroxide sol to make 500ml of a 25% peroxide solution.How many ml of each solution should be used? HELP just cannot get this one..
  37. Chemistry

    1. Not sure of how to do the calculations... Make a 0.200 m solution of NaCl in a 100. mL volumetric flask. ... Solution A's question or statement is the same but with M (molarity) Is this right? The small m means molality. If it were changed to capital M, then solution A's ...
  38. CHEMISTRY

    1. Not sure of how to do the calculations... Make a 0.200 m solution of NaCl in a 100. mL volumetric flask. ... Solution A's question or statement is the same but with M (molarity) Is this right? The small m means molality. If it were changed to capital M, then solution A's ...
  39. Biochemistry Gel Electrophoresis

    In Agarose gel electrophoresis, what may have occurred if all the sample lanes showed the same bands? Lane 1 is using EcoRI as restriction enzyme, lane 2 is using BamHI as restriction enzyme and lane 3 uses both the restriction enzymes. Thanks in advance!
  40. Spanish

    62. "¿_____ madar en la piscina o en el mar?" "Prefiero la piscina." a. Quiero b. Quieres c. Queréis d. Queremos B? Not sure.. 63. No _____ en la selva tropical. a. hace calor b. nieva c. hace sol d. nieve B? 64. Necesito ____ para mis vacaciones en la Costa del Sol. a. una ...
  41. Spanish

    Which sentence correctly substitutes the bolded phrase? Carla compro /los anteojos de sol./ Carla las compro Carla lo compro Carla los compro Carla la compro I'm confused because it's los anteojos but I thought los was part of it, and that it doesn't make it plural. I also don...
  42. Biochemistry

    You perform gel filtration and measure an elution volume of 25 ml. When you calibrated the same gel filtration column, the elution volumes of proteins of known molecular weights were as follows: 400,000 Da, 10 ml; 250,000 Da, 20 ml; 150, 000 Da, 30 ml; 100,000 Da, 40 ml. Plot ...
  43. Chem

    2. Suppose a chemistry student made 2000. mL of 6.00 M HCl. He accidently spilled half of this solution on the floor. What is the Molarity of HCL left in the beaker? Explain the answer... - for this problem, would I use the eq'N, M1V1=M2V2. 3. What is the molarity of a sol'n ...
  44. Chemisty

    Aluminum hydroxide forms a positively charged sol. Which of the following ionic substances should be most effective in coagulating the sol? NaCl CaCl2 Fe2(SO4)3 K3PO4 The idea behind coagulating sols is to use those salts that have the highest + and - charges and the most ions...
  45. Chemistry

    Aluminum hydroxide forms a positively charged sol. Which of the following ionic substances should be most effective in coagulating the sol? NaCl CaCl2 Fe2(SO4)3 K3PO4 The idea behind coagulating sols is to use those salts that have the highest + and - charges and the most ions...
  46. molecular biology

    How did O'Donnell show that the sliding clamp complex actually slides along dsDNA providing processivity to DNA Pol III? I think he took dna, a primer, and one radioactive dNTPs, added Pol III that was isolated, ran a gel, and the conclusion was that it was processive because ...
  47. Science Question 2

    The entire spectral classification of our Sun is what? A.M5V B.G2lB C.K9lll D.Not Given The sun is a G2 I don't know what LB stands for. please read: http://www.solstation.com/stars/sol.htm
  48. Statics

    You have 1kg of aluminum (E=69GPa) to make a cylindrical tube with a high Euler buckling load. The tube must have a length L of 0.5m. You can either make a solid tube, or a thin walled tube with a wall thickness, t=0.5cm. The density of aluminum is 2700kg/m3. The tubes are pin...
  49. Statics

    You have 1kg of aluminum (E=69GPa) to make a cylindrical tube with a high Euler buckling load. The tube must have a length L of 0.5m. You can either make a solid tube, or a thin walled tube with a wall thickness, t=0.5cm. The density of aluminum is 2700kg/m3. The tubes are pin...
  50. Chemistry 12

    In a lab the task was to dilute a 1.0M sol'n of Acetic Acid to a sol'n with a final pH of 4.15. The method I used to solve this was apparently wrong, but I don't understand how or why. Please help! Here is what I did: AcOH + H2O <-> H3O+ + AcO- First I found the final ...
  51. chemistry

    why aerosol cans have warning "Do not expose to high temperature and do not incinerate"?
  52. (SOL PS.7)(VBO 8.4.12)

    DESIGN AN EXPERIMENT RELATE TO HEAT TRANSFER DESIGN AN INBESTIGATION FROM A TESTABLE QUESTION RELATED TO HEAT TRANSFER, OR SOUND (SOL PS.8)(VBO8.5.10 DESIGN AN EXPERIMENT FROM A TESTAN=BLE QUESTION RELATED TO SOUND
  53. Biology

    Can someone please help me ! i don't know how to read a gel electrophoresis. thank you
  54. chemistry - energy and change rev (help)

    the below 2questions i could not answer while revising for this chapter pls help me out a little. 58. When a vehicle is parked in the sunlight on a hot summer day, the temperature inside can approach 55°C. One company has patented a non-CFC propelled aerosol that can be ...
  55. Chemistry

    Suppose a can of aerosol contains a residual amount of gas at pressure of 755mm Hg and a temperature of 25C. What would the presure be if the can were to be heated to 1155c?
  56. English expression

    Q1) What is the difference between painting and drawing? If a person uses a colored pencil, do we have to say, "He is drawing a picture with a colored pencils. or He is painting a picture with a colored pencil." ? Q2) Is he writing a bule gel ink pen? (Is this expression ...
  57. english

    what is number facts about the topic gel pens
  58. MATH

    What is the percentage strength of tretinoin gel when you combine 15 g of 0.025% and 30 g of 0.01%?
  59. math

    Paul was able to jump rope 35 more times than Daniella. If Paul jumped 123 times, how many times did Daniella jump rope? My sol: Let x = # times Daniella jump rope. Then Paul is: x+35 Sol: (x+35)+ x = 123 (?) It doesn't seem quite right. I love math, but sometimes don't grasp ...
  60. Phamacy School

    What is the percentage strength of tretinoin gel when you combine 15 g of 0.025% and 30 g of 0.01%?
  61. medicine

    how can i solve this?prepare 150ml of a 7.5%dextrose sol.you have D5%W and D10%W. how much of each sol. is needed? I assume the 7.5 dextrose is going to be on a w/w basis also. This is really simple, no algebra needed. Since 7.5 is halfway between 5 and 10, use equal volumes ...
  62. Biology

    If, on your gel, you saw only one band, how would you describe your genotype?
  63. Biology

    How big of a band on a gel would you expect to see for the 41-repeat allele?
  64. english 11

    Supermodel Tyra Banks uses Smooth & Soft bath gel; you should, too!
  65. MATHS

    GENERAL SOL.|SINtheta| = 1/2
  66. sci

    Would you say that with the rise in global warming, and with the increased amount of industrial wastes in the atmosphere, water at this point has a good chance to remain bound with aerosol and other impurities?
  67. Chem

    How many more [H+] are there in a sol’n of pH2 than pH6?
  68. sci

    How to prepare 1mol conc. Sol
  69. sci

    How to prepare 1mol conc. Sol
  70. art

    Supermodel Tyra Banks uses Smooth & Soft bath gel; you should, too! Is this bandwagon? I think so.
  71. Chemistry

    An aerosol can is empty, except for the propellant gas which exerts a pressure of 1.20 atm at 21 °C. If the can is thrown into a fire and heated to a temperature of 565 °C, what will be the pressure inside the hot can?
  72. Chemistry

    Find the strength of 2.45 gm of (H2SO4) in 250 ml of the sol.
  73. sol 102

    A philosophical argument should involve
  74. Chemistry

    Calculate the molality of of a sol'n whose density is 1.15 g/ml
  75. math

    i don't under stand this: i have to replace letters w/ #'s 0-9 do+re=mi; fa+si=la; re+si+la=sol
  76. algebra 1

    how can you solved this problem-3n squared+5n-2=0 using discriminant and to know if it is 1 or sol
  77. Chemistry

    Ph of a sol. Containing 3.2 gm of hcl dissolved in 1 litre of water.
  78. Chemistry

    How many millimoles of HCl (aq) are neutralized by 0.35 g of CaCO3 (sol)? mmol
  79. chemistry another Q

    Which, 9-fluorenol or 9-fluorenone, would have higher Rf value on a silica gel plate with 30% acetone/70% hexane at the eluent? Explain.
  80. science

    Calculate the osmotic pressure 5% glucose Sol. At 298 kelvin?
  81. Biology

    What is the main cause of brown or photochemical smog? 1. emissions from aircrafts 2. aerosol cans and coolants 3. emissions from automobiles 4. coal-burning industries 5. river pollution through discharge of industrial wastes
  82. Bio

    How much solute is required to make 600mL of a 0.4 M solution of Tris buffer? FW of Tris Buffer= 121.1g Work: Molarity equation= moles of solute/ liters of solution Step 1: 121.1 g / 121.14 g/mol TB = 0.9996 mol TB Step 2: Molarity Eq'n= moles of solute/ liters of sol'n ... so...
  83. mathematics

    A can of aerosol deodorant has a cylindrical shape with a hemisphere on top. The diameter of the cylinder is 6cm and the height of the cylinder is 17cm.Calculate the total volume of the can of deodorant?
  84. 7th grade

    How do I find the muscial notes for doe, rae, me, fa, sol...on a staff?
  85. chemistry

    If you have 2 moles of glucose in 8 liters of solution, what is the molarfity of this sol;ution?
  86. Chem

    Determine the boiling point of a sol'n containing 96.8 g MgBr2 in 2014 g of water.
  87. chemistry

    A. What is the mass of Solution 3? in g B. What is the density of Solution 2? g/ml solution 1: Mass Empty Flask (g):42.252 Mass NaCl (g):0.911 Volume Water (mL):100 Mass of Flask + Solution (g):43.107 solution 2: MEF: 45.778 mass nacl:0.897 volume water: 100 mass of Flask+sol:...
  88. chemistry

    Kindly advise dried aluminium hydroxide gel is equal to aluminium oxide, hydrated?
  89. chemistry

    An x molal sol. of a compoumd in benzene has mole fraction of solute equal to 0.2 the value of x will be?
  90. biochemistry

    You have purifiedLDH using affinity chromatography. Using the bradford assay you determined the total protein concentration of the column fraction to be 10 mg/ml in a final volume of 2.4 ml. You diluted some of your column fraction to 1 mg/ml using SDS Page sample loading ...
  91. chemistry

    You have purifiedLDH using affinity chromatography. Using the bradford assay you determined the total protein concentration of the column fraction to be 10 mg/ml in a final volume of 2.4 ml. You diluted some of your column fraction to 1 mg/ml using SDS Page sample loading ...
  92. organic chemistry lab pLEASE HELP

    Which, 9-fluorenol or 9-fluorenone, would have higher Rf value on a silica gel place with 30% acetone/70% hexane as the eluent? Explain.
  93. Chemistry

    Arrange the following compounds in order of decreasing ease of elution from a column of silica gel: a) 2-octanol; b) 1,3-dichlorobenzene; c) tert-butylcyclohexane; d) benzoic acid
  94. Chemistry

    Arrange the following compounds in order of decreasing ease of elution from a column of silica gel: a) 2-octanol; b) 1,3-dichlorobenzene; c) tert-butylcyclohexane; d) benzoic acid
  95. math

    Aerosol cans carry clear warnings against incineration because of the high pressures that can develop upon heating. Suppose a can contains a residual amount of gas at a pressure of 755 mm Hg and a temperature of 25 °C. What would the pressure be if the can were heated to 1155...
  96. chemistry

    Aerosol cans carry clear warnings against incineration because of the high pressures that can develop upon heating. Suppose a can contains a residual amount of gas at a pressure of 755 mm Hg and a temperature of 25 °C. What would the pressure be if the can were heated to 1155...
  97. science

    I figured out the other three questions but im stuck on this one... If you digest an entire human genome with a restriction enzyme you get a blurry smear in the lane of the gel. Why?
  98. molecular bio

    do pcr generated luxAB or gel purified luxAB work better in getting white colonies? WHy? please help. thanks
  99. chemistry

    You have a protein solution of 3.7mgs/ml You need to load 20ug onto a gel. How much of this solution would you use ?
  100. chemistry/math

    Aerosol cans carry clear warnings against incineration because of the high pressures that can develop upon heating. Suppose a can contains a residual amount of gas at a pressure of 755 mm Hg and a temperature of 25 °C. What would the pressure be if the can were heated to 1155...
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