Based on H f = –1275 kJmol of glucose, the formation of glucose will be (endothermic or exothermic) and heat will be (released or absorbed) to /from the surroundings.

10,769 results
  1. biology

    A red blood cell is placed into each of the following solutions. Indicate whether crenation, hemolysis, or neither will occur. Solution A: 3.21% (m/v) NaCl Solution B: 1.65% (m/v) glucose Solution C: distilled H2O Solution D: 6.97% (m/v) glucose Solution

  2. Chem

    A patient receives 3.5 L of glucose solution intravenously (IV). If 100. mL of the solution contains 5.9 g of glucose (carbohydrate), how many kilocalories did the patient obtain from the glucose solution?

  3. Chem

    A patient receives 3.2 L of glucose solution intravenously (IV). If 100. mL of the solution contains 5.0 g of glucose (carbohydrate), how many kilocalories did the patient obtain from the glucose solution? *If anyone could help me with this, please show

  4. Biology

    Will iodine react with sucrose or glucose? I would say no, because it reacts with starch, a polysaccharide, and glucose is a monosaccaride and sucrose is a combination of fructose and glucose, two monosaccharides. Am I right? Why or why not? How does

  5. chemistry

    a sample of glucose, c6h12o6 contains 2.03*10^21 atoms of carbon. (a)how many atoms of hydrogen does it contain? (b)how many molecules of glucose does it contain? (c)how many moles of glucose does it contain? (d)what is the mass of this sample in grams?

  6. Chemistry

    What is the percent by mass of glucose in a solution containing 0.15 moles of glucose dissolved in 410g acetic acid? The molar mass of glucose is 180g/mol

  7. Chemistry

    The overall balanced equation for the production of ethanol from glucose is as follow C6H12O6 = 2C2H5OH + 2CO2 a) what is the theoratical yield of ethanol available from 10gram of glucose? b) If in a particular experiment, 1gram of glucose produce

  8. Chemistry

    Carbon dioxide gas and liquid water form solid glucose (C6H12O6) and oxygen gas during photosynthesis. Chlorophyll absorbs light in the 600-700 nm region. a) Write a balanced thermochemical equation for the formation of 1.00 mol of glucose. ... I know that

  9. Chemistry

    The human body “burns” glucose (C6H12O6) for energy. a. Write a balanced chemical reaction for the complete combustion of glucose to CO2(g) and H2O(l) such that the stoichiometric coefficient for glucose is 1. b. When 1.00 g of glucose are completely

  10. chemistry

    A student placed 19.0g of glucose (c6h12o6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100ml.- mark on the neck of the flask was reached. The flask was then shaken until

  11. Ap Biology

    During aerobic respiration, glucose is broken down to form several end products. Which end products contain the carbon atoms from glucose? The hydrogen atoms from glucose? The oxygen atoms from glucose? The energy stored in the glucose molecules?

  12. science

    Glucose is a simple sugar made up of carbon, hydrogen, and oxygen. What kind of molecule is glucose? A. Glucose is protein. B. Glucose is a nucleic acid. C. Glucose is an organic molecule. D. Glucose is an inorganic molecule

  13. Chemistry-Please help

    A student placed 11.0 of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.-ml mark on the neck of the flask was reached. The flask was then shaken until the

  14. Biochem

    The Na –glucose symport system of intestinal epithelial cells couples the \"downhill\" transport of two Na ions into the cell to the \"uphill\" transport of glucose, pumping glucose into the cell against its concentration gradient. If the Na

  15. Chemistry

    A student placed 17.0 g of glucose (C_6H_{12}O_6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100 mL mark on the neck of the flask was reached. The flask was then shaken

  16. Science

    What is the percentage by mass of glucose in a solution which contains 18gm of glucose and 250 gm of water

  17. Microbial biochemistry

    e Outcome 2: Assignment 1. Calculate the equilibrium constant for the reaction at pH 7.0 and 25°C (ΔG°’ = - 9.7 kJ.mol-1 ). Glycerol-3-phosphate + H2O  Glycerol + Pi 2. The final step in the pathway for the synthesis of glucose from lactate

  18. Science

    The biochemical conversion of Glucose, C6H12O6, into pyruvic acid, C3H4O3, is an important step in the TCA (Kreb’s) cycle which forms a part of the metabolic breakdown of glucose (to produce energy). C6H12O6 (s) + O2 (g) → 2C3H4O3(l) + 2H2O (l) glucose

  19. science

    What kind of molecule is glucose? a. glucose is a protein b. glucose is a nucleic acid c. glucose is an organic molecule** d. glucose is an inorganic molecule

  20. Biochemistry

    25mg of glycogen is supplied – what is its’ percentage purity? The glycogen sample was hydrolysed to glucose monomers with 2ml of 2M sulphuric acid in water. The hydrosylate was then neutralised and made up to 10ml total volume. The glucose content was

  21. chem

    A student placed 13.5g of glucose (\rm C_6H_{12}O_6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100. \rm mL mark on the neck of the flask was reached. The flask was then

  22. Chemistry

    The equation for fermentation of glucose to alcohol and carbon dioxide is C6H12O6= 2C2H5OH + 2CO2 The enthalpy for the reaction is -67kj. Is the reaction endothermic or exothermic? Is the heat energy absorbed or released as the reaction occurs? I think its

  23. Chemistry

    An aqueous solution of glucose (C6H12O6), called D5W, is used for intravenous injection. D5W contains 54.30 g of glucose per liter of solution. What is the molar concentration of glucose in D5W?

  24. Microbiology

    You need to make 20ml of a 20% glucose solution. The M.W. of glucose is 180.16. How would you accomplish this: Glucose _______g Pure Water _______ml

  25. chem

    A student placed 12.0grams of glucose in a flask added enough water to dissolve glucose by swirling then added additional water until the .100 ml mark. A 60.0ml sample of this glucose soon was diluted to 0.500 L. How many grams of glucose are in 100. ml of

  26. chemistry ap

    Why would [23.8-(.0588)(23.8)] be the proper setup to determine the vapor pressure of a solution at 25 Celsius that has 45g of C6H12O6, glucose (MM=180gxmol^-1), dissolved in 72g of H2O? The vapor pressure of pure water at 25Celsius is 23.8 torr. vp pure

  27. College Chemistry

    A student placed 14.0g of glucose (C6H1206) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.-mL mark on the neck of the flask was reached. The flask was then shaken until

  28. science

    Multiple Choice Which of the following sets of words can be used to describe the outputs of photosynthesis? A. water, glucose, light energy B. carbon dioxide, glucose, chemical energy C. oxygen, glucose, chemical energy D. glucose, oxygen, light energy can

  29. chemistry

    the process of respiration, glucose is oxidized completely. In fermentation, O2 is absent, and glucose is broken down into Co2 and H2o. Calculate delta g for respiration of 1.00 g of glucose Calculate delta g for fermentation of 1.00 g of glucose. My

  30. Chemistry

    Calculate the enthalpy change of formation for the following reactions using Hess's law, and the enthalpies of formation given in Figure 4: b) MgO +2HCl --> MgCl2 +H2O c)NaOH+ HCl -->NaCl +H20 Figure4: the given enthalpies of formation compound values are:

  31. chemistry

    A student placed 11.5 of glucose () in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.- mark on the neck of the flask was reached. The flask was then shaken until the solution

  32. Please Help Fast

    A student placed 10.5g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.- mL mark on the neck of the flask was reached. The flask was then shaken until

  33. Science

    How do plants recycle carbon during photosynthesis? 1. The carbon in carbon dioxide is recycled as glucose. 2. The carbon in glucose is recycled as carbon gas. 3. The carbon in glucose is recycled as carbon dioxide. 4. The carbon in carbon gas is recycled

  34. chemistry

    A student placed 10.5 g of glucose C6H12O6 in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.mL mark on the neck of the flask was reached. The flask was then shaken until the

  35. biology

    In the process of alcohol fermentation, 2 NADH molecules are converted to 2 NAH+ as energy from the NADH is used to drive the formation of ethanol. Explain why there is a need to add energy to a process whose purpose is to extract energy from glucose. I

  36. Science_Chemistry

    A glucose (C6H12O6) solution is 2.5% glucose by mass. If the density of the solution is 1.10 g/mL, what is the molarity of glucose/water solution?

  37. Biology

    Will iodine react with sucrose or glucose? I would say no, because it reacts with starch, a polysaccharide, and glucose is a monosaccaride and sucrose is a combination of fructose and glucose, two monosaccharides. Am I right? Why or why not? How does

  38. science

    1. How do plants recycle carbon during photosynthesis?(1 point) The carbon in carbon gas is recycled as glucose.**** The carbon in glucose is recycled as carbon gas. The carbon in carbon dioxide is recycled as glucose. The carbon in glucose is recycled as

  39. chemistry

    what is the molality of 12.5 solvation of glucose i water?The molecular weight of glucose is 180.00

  40. Chem

    Based on H f = –1275 kJmol of glucose, the formation of glucose will be (endothermic or exothermic) and heat will be (released or absorbed) to /from the surroundings.

  41. Chemistry

    Based on H f = –1275 kJmol of glucose, the formation of glucose will be A. endothermic B. exothermic and heat will be A. released B. absorbed to /from the surroundings.

  42. math

    Multiple Choice Glucose is a simple sugar made up of carbon, hydrogen, and oxygen. What kind of molecule is glucose? A. Glucose is protein. B. Glucose is a nucleic acid. C. Glucose is an organic molecule. D. Glucose is an inorganic molecule.

  43. chemistry

    first task is to prepare 250 ml of 3 M glucose. Then You are preparing a solution and the recipe calls for 25 ml of 10% glucose. How much of the 3M glucose stock would you need to add to so that you are adding the same molar amount of glucose?

  44. AP Biology

    During aerobic respiration, glucose is broken down to form several end products. Which end products contain the carbon atoms from glucose? The hydrogen atoms from glucose? The oxygen atoms from glucose? The energy stored in the glucose molecules?

  45. Chemistry

    Which of the solutions has the greatest osmotic pressure? Choose one answer. a. 10.0 g glucose in 1.00 L at 298 K b. 10.0 g glucose in 1.00 L at 303 K c. 10.0 g glucose in 0.500 L at 298 K d. 5.0 g glucose in 1.00 L at 298 K

  46. Science repost for iiii

    science - iiii, Monday, October 29, 2007 at 8:08pm What test would you need to perform to prove that it is the combination of glucose and the Glucose Indicator Solution that changes color when heated and not just the glucose or the Glucose Indicator

  47. Chemistry

    1. The standard heat of formation of glucose and lactic acid are -1274.45 and -694.04 kJ/mole, respectively. The molar heat capacity of the two compounds are 218.86 and 127.6 J/(mol)K a.) What is the total heat of reaction at 25 degree Celsius for the

  48. science

    If the concentration of glucose in the blood flowing through the kidneys is within the normal range, then which of the following statements is correct? a. The nephron pumps glucose into the collecting duct. b. The Bowman's capsule secrets glucose back into

  49. science

    If the concentration of glucose in the blood flowing through the kidneys is within the normal range, then which of the following statements is correct? a. The nephron pumps glucose into the collecting duct. b. The Bowman's capsule secrets glucose back into

  50. Science

    1. A clementine in my fridge is covered with a nice blue-green lawn of mold, a common decomposer. Assuming that the clementine did not dry out, what do you predict is the weight of the clemintine and mold together compared to the starting weight of the

  51. science

    to prepare 500cm^3 of glucose solution of concerntration 1M. The chemical formula of glucose is C6H12O6.calculate (1)the relative molecular mass and molar mass.(2)the amount of glucose which will be in the solution.(3)the mass of glucose to be weighed

  52. science

    to prepare 500cm^3 of glucose solution of concerntration 1M. The chemical formula of glucose is C6H12O6.calculate (1)the relative molecular mass and molar mass.(2)the amount of glucose which will be in the solution.(3)the mass of glucose to be weighed

  53. microbiology

    all coliforms ferment glucose but none of the media used for this test includes glucose why is glucose not used

  54. Science

    what test would you need to perform to prove that it is the combination of glucose in the glucose indicator solution that changes color when heated and not just the glucose or the glucose indicator solution alone. support your anwser with a solution

  55. Chemistry

    When 0.3212g of glucose was burned in bomb calorimeter of calorimeter constant 641J/K, the temperature rose by 7.943 K. Calculate a) the standard molar internal energy of combustion b) the standard enthalpy of combustion and c) the standard enthalpy of

  56. algebra

    In a certain medical test designed to measure carbohydrate tolerance, an adult drinks 9 ounces of a 20% glucose solution. When the test is administered to a child, the glucose concentration must be decreased to 10%. How much 20% glucose solution and how

  57. chemistry

    Normal glucose levels in the blood are from 70 to 110 mg glucose per 100 mL of blood. I the level falls too low, there can be brain damage. If a person has a glucose level of 108 mg/100 mL, what is the total mass of glucose in grams in 5.10L of blood?

  58. Chemistry

    A 4.5 g sample of glucose, a carbohydrate, is placed in a calorimeter. The water in the container has a mass of 1500 g and an initial temperature of 15°C. After all the glucose is burned, the water temperature is 27 °C. What is the caloric value for

  59. Chemistry

    Normal glucose levels in the blood are from 70 to 110 mg glucose per 100mL of blood. If the level falls to low, there can be brain damage. If a person has a glucose level of 92 mg/ 100mL, what is the total mass of glucose in grams in 5.10 L of blood?

  60. Math (Please help)

    you need to make 20ml of a 20% glucose solution. I need to calculate the amount of glucose and water needed. I know that the M.W is 180.16 for glucose. Would I multiply 20ml times 20 percent first? Thank you!

  61. Chemistry

    I need help with this problem please Calculate the amount of reagents you take to prepare 200 g of 9.0% (m/m) glucose solution? I already found the mass of the glucose which was part one and got 18.0 g of glucose. Now they want the mass of water and I am

  62. College Chemistry

    A student placed 14.0g of glucose (C6H1206) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.-mL mark on the neck of the flask was reached. The flask was then shaken until

  63. College Chemistry

    A student placed 14.0g of glucose (C6H1206) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.-mL mark on the neck of the flask was reached. The flask was then shaken until

  64. Chemistry

    A 1.50 g sample of glucose (C6H12O6) is burned in a bomb calorimeter that contains water at 25.0 0C. The heat capacity of the bomb calorimeter is 1046 J/0C. When the glucose is combusted, the temperature of the water rises to 47.4 0C. Calculate the heat of

  65. Chemistry

    In the process of respiration, glucose is oxidized completely. In fermentation, O2 is absent, and glucose is broken down into Co2 and H2o. Calculate delta g for respiration of 1.00 g of glucose Calculate delta g for fermentation of 1.00 g of glucose. My

  66. Chemistry

    the process of respiration, glucose is oxidized completely. In fermentation, O2 is absent, and glucose is broken down into Co2 and H2o. Calculate delta g for respiration of 1.00 g of glucose Calculate delta g for fermentation of 1.00 g of glucose. My

  67. chemistry

    the process of respiration, glucose is oxidized completely. In fermentation, O2 is absent, and glucose is broken down into Co2 and H2o. Calculate delta g for respiration of 1.00 g of glucose Calculate delta g for fermentation of 1.00 g of glucose. My

  68. Chemistry

    the process of respiration, glucose is oxidized completely. In fermentation, O2 is absent, and glucose is broken down into Co2 and H2o. Calculate delta g for respiration of 1.00 g of glucose Calculate delta g for fermentation of 1.00 g of glucose. My

  69. Chemistry

    the process of respiration, glucose is oxidized completely. In fermentation, O2 is absent, and glucose is broken down into Co2 and H2o. Calculate delta g for respiration of 1.00 g of glucose Calculate delta g for fermentation of 1.00 g of glucose. My

  70. Math

    Let g(t) be the Glucose concentration in blood stream of a person at time t. g(t) = 1/k(R - (R - k*go)e^(-kt/v)) Where go - initial glucose concentration (at t=0), v - volume of blood in Humana body , R - rate at which glucose is introduced into blood

  71. chemistry

    You took 0.99ml of a hexokinase assay solution and added 10 ul of an unknown glucose sample. The absorbance at 340nm is 0.422 the extinction coefficient is 6.22x10^3 the molecular mass of glucose is 180.16g/mol. What is the concentration of glucose in the

  72. chemistry

    You took 0.99ml of a hexokinase assay solution and added 10 ul of an unknown glucose sample. The absorbance at 340nm is 0.422 the extinction coefficient is 6.22x10^3 the molecular mass of glucose is 180.16g/mol. What is the concentration of glucose in the

  73. Physical Chemistry

    When the reaction glucose-1-phosphate (aq) --> glucose-6-phosphate (aq) is at equilibrium at 25.0 degrees celcius, the amount of glucose-6-phosphate present is 95% of the total. A.) Calculate the Standard Delta G at 25.0 degrees celcius. B.) Calculate

  74. Science. (I'm patient, no rush)

    Which of the following sets of words can be used to describe the outputs of photosynthesis? A. water, glucose, light energy B. Carbon dioxide, glucose, chemical energy C. oxygen, glucose, chemical energy D. glucose, oxygen, light energy*** Am I correct?

  75. Chemistry

    What is the percent by mass of glucose in a solution containing .15 mol of glucose dissolved in 410 g acetic acid? The molar mass of glucose is 180g/mol.

  76. Very quick question biology

    I'm working on a biology project where I must make a molecule of glucose. I have finished my molecule but I want something in the middle of it which is the "centrepiece ". Can anyone give me any ideas of some things glucose is found in (food) in which I

  77. Chemistry

    A student placed 14.0 of glucose () in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.- mark on the neck of the flask was reached. The flask was then shaken until the solution

  78. chemistry

    A student placed 12.5 of glucose () in a 100.- volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the calibration mark on the neck of the flask was reached. The flask was then shaken until

  79. Chemistry

    A student placed 12.0g of glucose (C6H1206) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.-ml mark on the neck of the flask was reached. The flask was then shaken until

  80. Chemistry Help Please!!!

    A student placed 17.0 g of glucose (C6H1206) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.-ml mark on the neck of the flask was reached. The flask was then shaken until

  81. Chemistry HELP!

    A student placed 10.5g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.- mL mark on the neck of the flask was reached. The flask was then shaken until

  82. chem

    A student placed 12.5 of glucose (C6H12O6) in a 100ml volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the calibration mark on the neck of the flask was reached. The flask was then shaken

  83. Stats

    5. A person’s blood glucose level and diabetes are closely. X is a random variable that measures the milligrams of glucose per deciliter of blood. After a 12 hour fast, x has an approximate normal distribution with a mean of 85 and a standard deviation

  84. science

    compare table salt with glucose table salt is a strong electrolyte that will completely dissolve in a solution. whereas, glucose is a weak electrolyte and won't dissolve in a solution. ex. NaCl in water makes Na+ and Cl- ions glucose in water is basically

  85. physiology

    You are a physiologist on a space flight to a distant planet. You discover aliens inhabiting the planet and they are willing to submit to your tests. You discover that the aliens kidney handles the sugar alcohol mannitol just like our kidneys handle

  86. AP Chem

    A student placed 17.5 g of glucose in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100. mL mark on the neck of the flask was reached. The flask was then shaken until the

  87. business

    Can anyone help me with this, i spent 1 hour trying to search this on google but nothing pops up. This is about self monitoring blood glucose at home who donated the startup costs(it would be great to include the amount) for development and prodution of

  88. Chem

    Please help are these right? A 2.3 mole sample of nitrogen (N2), has a volume of 50.0 L and a pressure of 630 mmHg. What is the temperature of the gas? 41.5 C which I converted to Kelvin and got 231.5K Calculate the molarity (M) of the following solutions:

  89. CHEM UNI

    Our bodies can use glucose, C6H12O6 (s) (MM = 180.2 g/mol ) , as a fuel. The heat of combustion of glucose in 2.820 x 103 kJ/mol. The human body has a specific heat of 4.18 J·˚C−1·g−1 Howmany grams of glucose would an 80.0 kg person need to consume

  90. Chemistry

    A sample of glucose, C6H12O6, contains 5.1x10623. a.)How many atoms of hydrogen does it contain? b.)How many molecules of glucose does it contain? please help me. :(

  91. o chem

    Which is not correct? glucose is a reducing sugar glucose has six carbon atoms glucose undergoes mutarotation glucose is a disaccharide glucose is an aldose

  92. Chemistry

    The term mole is used in chemistry to define an amount of a substance. For example, a mole of glucose, blood sugar, weighs 180.16 grams. A common concentration unit for solutions is moles of substance per liter of solution. We abbreviate this with the

  93. chemistry

    I need help doing the work, I think something might be wrong. How many glucose molecules does an E coli cell contain if it has an internal glucose concentration of 1.0 mM. The E coli is a cylinder that is 2 micrometers long and 1 micrometer in diameter.

  94. Chemistry

    Implants carbon dioxide combined with water and energy to form glucose and oxygen gas. Right off the balance equation for this reaction. Glucose =C6H12O6. Given 78g of water. How many grams of glucose can be formed?

  95. chemistry

    the process of respiration, glucose is oxidized completely. In fermentation, O2 is absent, and glucose is broken down into Co2 and H2o. Calculate delta g for respiration of 1.00 g of glucose Calculate delta g for fermentation of 1.00 g of glucose. My

  96. Chemistry

    Glucose( C6H12O6) is produced by photosynthese. For every kilo of water the plant takes in ,how much glucose can it make ? I done the balanced equation wich is (I think) 6H2O+6CO2 = C6 H12 3O6 After that I get a ratio of 108/372 wich give me a tota of 3444

  97. physiology

    You are a physiologist on a space flight to a distant planet. You discover aliens inhabiting the planet and they are willing to submit to your tests. You discover that the aliens kidney handles the sugar alcohol mannitol just like our kidneys handle

  98. biology A

    Complete the analogy below by selecting the correct answer. electron transport chain : _____ production :: Calvin cycle : _____ production A>> ATP; glucose B>> Water; glucose C>> ATP; oxygen D>> Glucose; ATP I'm pretty set on A, but, again, I'm not one

  99. Chemistry

    Given these reactions and their corresponding ΔG° values, Glucose + phosphate → glucose-6-phosphate + H2O; ΔG° = +13.13 kJ ATP + H2O → ADP + phosphate; ΔG° = -32.22 kJ What is the calculated ΔG° for the coupled reaction Glucose + ATP →

  100. biology

    Blood glucose level is regulated by a feedback loop, shown in the diagram below. People with diabetes either cannot make insulin, or their bodies cannot use insulin properly. What does the diagram suggest about the effectiveness of the feedback loop at

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