Fructose is a sugar commonly found in fruit. A sample of fructose, C6H12O6, weighing 4.50 g is burned in a bomb calorimeter. The heat capacity of the colorimeter is 2.115 E4 J/ºC. The temperature in the calorimeter rises from 23.49ºC

27,241 results
  1. chem

    Consider the fermentation reaction of glucose: C6H12O6 ----) 2C2H5OH+2CO2 A 1.00-mol sample of C6H12O6 was placed in a vat with excess yeast. If 35.1 g of C2H5OH was obtained, what was the percent yield of C2H5OH?

  2. 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

  3. science

    Which carbon reservoir has the longest residence time? plant biomass oceans fossil deposits*** soil What do plants use for energy? light glucose*** fructose water Animals, such as clams and oysters, build their shells from ________ in the water. hydrogen

  4. Chemistry

    Calculate the mole fraction of fructose (molar mass = 180.2g/mol) in an aqueous solution that has a freezing point of -7.0 degrees Celsius.

  5. science

    How many elements are in glucose sugar, C6H12O6? How did you recognize them? a. How many total atoms are there in this equation?

  6. Chemistry

    The rate equation for the hydrolysis of sucrose to fructose and glucose is first order. After 27 minutes the sucrose concentration decreased from 0.0146M to 0.0132M. Find the rate constant K. Please help me!

  7. chemistry

    can some one help me with a few chem questions please. A chunk of iron weighs 4.32 g. a) How many iron atoms are there in this sample? 55.85 g Fe = 1.00 mol Fe = 6.022 x 1023 atoms Fe b) How many moles of iron are there in this sample? 2. . You have a

  8. Chemistry

    Balance the photosynthesis equation: CO2+ H2O-> C6H12O6+ O2 Which i think this is Balanced: 6CO2 + 6H2O + energy-> C6H12O6 + 6O2 ? The question is this: According to the balanced equation __________ moles of carbon dioxide will react with _________moles of

  9. chemistry

    Fructose is a sugar commonly found in fruit. A sample of fructose, C6H12O6, weighing 4.50 g is burned in a bomb calorimeter. The heat capacity of the colorimeter is 2.115 E4 J/ºC. The temperature in the calorimeter rises from 23.49ºC to 27.71ºC. A)What

  10. chemistry

    if C6H12O6 -> 2 C2H5OH + 2 CO2 represents the fermentation of sugar to produce alcohol, and the reaction is only 40.0% efficient (% yield), what is the actual yield of alcohol from 454 g of C6H12O6

  11. Science Please Check!

    Which atoms are in all carbohydrates? A- carbon, phosphorus, oxygen B- carbon, nitrogen, oxygen C- carbon, hydrogen, oxygen D- carbon, hydrogen, nitrogen My choice is C. Which type of macromolecule is the sugar fructose? A- protein B- lipid C- carbohydrate

  12. Organic Chemistry

    If fructose, glucose, and sucrose are the only carbohydrates in honey, how could you use Benedict's reagent to determine the number of moles of sucrose in a 1.0g sample of honey?

  13. Help math

    recipe calls for 4 pounds of fruit. You have 60 ounces of fruit. a. Do you have as much fruit as you need? b. If not, how much more or less fruit do you need? I said needs more fruit and what I am stuck with his b?? 3.75

  14. chemistry

    Which of the following would have the lowest vapor pressure? A. 0.8 m C6H12O6 B. 0.10 m C6H12O6 C. 0.05 m C6H12O6 D. 0.15 m C6H12O6 I think it is D... is that correct? Which of the following would have the lowest boiling point? A. 0.8 m C6H12O6 B. 0.10 m

  15. Science

    Reggie has a sample of raw sugar made up of large particles and a sample of white sugar made up of much smaller particles. He dissolved 1 tsp. of each sample in 1 cup of water. Which dissolved fastest? a) Both dissolved at the same rate b) The white sugar

  16. Chemistry

    At -15.0 C, what is the maximum mass of fructose (C6H12O6) you can add to 3.00 kg of pure water and still have the solution freeze? Assume that fructose is a molecular solid and does not ionize when it dissolves in water. I'm confused on how you pick the

  17. Chemistry

    Lactose Aspartame Sucrose Sucralose Saccharin which ones of these are polar, which are non-polar? and what is the structures of them? like their O-H bonds? i found answers to other sugars like glucose and fructose but need help for these

  18. CHEMISTRY

    question 1.Explain why fructose and alpha-hydroxyketose reacts with benediict’s solution. what structural arrangement is necessary for the reaction to occur? question 2. When aldose react with Barfoed reagent what type of organic compound forms. What

  19. chemistry

    The fermentation of sugar (C6H12O6) to form ethanol (C2H5OH) and carbon dioxide (CO2) occurs according to the following equation: C6H12O6(aq) ¡ú 2 C2H5OH(aq) + 2 CO2(g) kJ mol¨C1 ¦¤Hf (C6H12O6(s)) is ¨C1275 ¦¤Hf (C2H5OH(l)) is ¨C277 ¦¤Hbond

  20. Chem

    The hydrolysis of sucrose into glucose and fructose in acidic water has a rate constant of at 25 degrees C. Assuming the reaction is first order in sucrose, determine the mass of sucrose that is hydrolyzed when 2.60 L of a 0.150 M sucrose solution is

  21. Environmental Science

    Answer the questions about the following processes in the space provided below. You only need to indicate a process by its number. For each question list as many processes as apply. Process 1: 6 CO2 + 6 H2O → C6H12O6 + 6 O2 Process 2: C6H12O6 + 6 O2 →

  22. chemistry

    An enzymatic hydrolysis of fructose was allowed to proceed to equilibrium at 25 degrees C. The original concentration of fructose-1-p was .2 M, but when the system had reached equlibrium the concentration of fructose 1-p was only 6.52 * 10 -5 M. Calculate

  23. AP Chemistry

    What percent (by mass) of granulated sugar is fructose, and what percent of it is sucrose? Background: We are doing a colligative properties lab in my class where we are to add 20 grams, 40 grams, 60 grams, and 80 grams of sugar to 100 grams of water, and

  24. biochemistry

    Calculate the total number of electrons that are lost in 1.00 g samples of fructose and oleate. (Note: the number of electrons lost per carbon atom is equivalent to its increase in oxidation state.) No. e- lost in 1.00 g fructose = _______________ No. e-

  25. 12th grade Biology

    Q. decribe how it is metabolized and how many ATP are produced from each: a)fructose b)sucrose c)palmitic acid d)glycerol e)alanine f)glutamic acid g)aspartic acid i know that fructose produce 48 atps, sucrode produce 76 atps, palmitic acid produce 96atps

  26. Chem

    What is the byproduct of the synthesis of sucrose from the two monosaccharides glucose and fructose?

  27. chemistry

    Draw and name the different structural forms of L-fructose that would exist in aqueous solutions

  28. umuc

    Draw and name the different structural forms of L-fructose that would exist in aqueous solutions

  29. Cell Biology

    How many molecules of ATP will be synthesized by the complete oxidation of one molecule of fructose 1, 6-bisphosphate to carbon dioxide and water by a liver cell? Show your work.

  30. Gen chem 2

    D-Glucose, C6H12O6, is an aldohexose sugar which occurs commonly in nature. In a text or reference book look up "-D-(+)-Glucose and write its correct, complete Lewis structure. Then “parcel” e’s to determine the correct (O) no. for each C atom in

  31. nutrition and wellness

    Whole fruits are good sources of vitamins, minerals, and a. protein. b. trans fats. c. fiber. d. high fructose corn syrup. c fiber?

  32. math help ??!!

    just show how you found your answer... A recipe calls for 4 pounds of fruit.you have 60 ounces of fruit. A.do you have as much fruit as you need? B.if not,how much more do you need?

  33. Biology

    Of the following substances, which would react positively with Biuret's, Lugol's, and Benedict's? 1. water 2. starch 3. glucose 4. maltose 5. sucrose 6. fructose 7. galactose 8. albumin 9. hamburger juice 10. onion juice 11. milk 12. potato juice 13.

  34. Science

    Reggie has a sample of raw sugar made up of large particles and a sample of white sugar made up of much smaller particles. He dissolved 1 tsp. of each sample in 1 cup of water. Which dissolved fastest? a) Both dissolved at the same rate b) The white sugar

  35. Science

    Reggie has a sample of raw sugar made up of large particles and a sample of white sugar made up of much smaller particles. He dissolved 1 tsp. of each sample in 1 cup of water. Which dissolved fastest? a) Both dissolved at the same rate b) The white sugar

  36. chem

    using what you know about the valence shells of the metals of the periodic table explain why sodium and potassium are most commonly found bound with halides while manganese and calcium are most commonly found bound with carbonatr

  37. Chemistry

    Naphthalene, commonly found in mothballs , is commonly found in 93.7% carbon and 6.3% hydrogen. The molar mass of naphthalene is 128g/mol. Determine the empirical and molecular formulas for naphthalene

  38. Chemistry

    A 360mg sample of sugar (molar mass of 180 g/mol) is dissolved in enough water to produce 200mL of solution. after the sugar is completely dissolved, you pour 50mL of this solution into a Burnette for use in an experiment. what is the molar concentration

  39. biology

    Why is CO^2 required by plants to produce glucose? ( the arrow pointing up should be pointed down.) CO2 is where the Carbon comes from to make sugar.Glucose is a six-carbon sugar represented by the formula C6H12O6

  40. Chemistry

    I need help on this stoichiometry problem. I don't know whay my answer is incorrect. The fermentation of sugar to produce ethyl alcohol occurs by the following reaction: C6H12O6 -- 2C2H5OH + 2CO2 What mass of ethyl alcohol can be made from 1.00 kg of

  41. Chemistry

    Balance the photosynthesis equation: CO2+ H2O-> C6H12O6+ O2 Which i think this is Balanced: 6CO2 + 6H2O + energy-> C6H12O6 + 6O2 ? The question is this: According to the balanced equation __________ moles of carbon dioxide will react with _________moles of

  42. chemistry

    Calculate the number of C, H, and O atoms in 4.50 g of glucose (C6H12O6), a sugar. okay i did it and i got just the C right and not the H and O help?

  43. AP BIO

    a student wished to test a sample of organic material to determine whether it was sugar, a dat, or starch. If she could perform only one of the following, which would be the most revealing? 1- test for the presence of carbon and hydrogen in the sample 2-

  44. Chemistry

    A compound consists of carbon, hydrogen, and fluoride. In one experiment, combustion of 2.50g of the compound produced 3.926 g of CO2. Another sample weighing 5.00 g was found to contain 2.54 g of fluoride. The molar mass is found to be 448.4 g/mol. What

  45. Biology

    Does milk contain all the macronutrients necessary in the human diet? Yes, for a normal human. What milk does not have, the body can make from what milk has. There are eight essential saccarides: Glucose Galactose Mannose Xylose ose (NOT fructose)

  46. Chemistry

    Sucrose hydrolyzes into glucose and fructose. The hydrolysis is a first order reaction. the half life for the hydrolysis of sucrose is 64.2min at 25C. How many grams fo sucrose in 1.25L of a 0.389M solution are hydrolyzed in 1.73hrs? I started off by

  47. Pre AP Chemistry

    If I have a 1200 gram sample of a soft drink and it contains 180 grams of sugar, the percentage by mass of the sugar in the drink is 15%. If the sugar in the drink is sucrose (C12H22O11), how many grams of pure carbon can be obtained from decomposing all

  48. chemistry

    A solution of fructose, C6H12O6, a sugar found in many fruits, is made by dissolving 22.0 g of fructose in 1.00 kg of water. What is the molal concentration of fructose the solution? What is the mole fraction of fructose in the solution? What is the mass

  49. Algebra 2

    Ordinary corn syrup contains dextrose sugar. A process called enzyme conversion changes it into a syrup that is 42% fructose. This new syrup can be further treated with fractionation columns to make a syrup that is 95% fructose (high fructose corn syrup).

  50. GR.12 BIOLOGY

    i have to do an experiment on alcohol fermentation using yeast and sugar. i decided that i will test the differnt types of sugars to see how fast or how slow the reaction will happen. The three types is sucrose which is brown sugar ,there is lactose and

  51. chem

    no idea how to do this! Please help! Determine the freezing point of a water solution of fructose( C6H12O6) made by dissolving 59.0 g of fructose in 485g of water. Answer in celcius. Same method outlined for your other post. Post any work if you get stuck.

  52. Chemistry

    An enzymatic hydrolysis of fructose was allowed to proceed to equilibrium at 25 degrees C. The original concentration of fructose-1-p was .2 M, but when the system had reached equlibrium the concentration of fructose 1-p was only 6.52 * 10 -5 M. Calculate

  53. Chemistry

    At –10.00 °C (a common temperature for household freezers), what is the maximum mass of fructose (C6H12O6) you can add to 1.00 kg of pure water and still have the solution freeze? Assume that fructose is a molecular solid and does not ionize when it

  54. science

    define sugar For definitions, I suggest you use a real or online dictionary. For example, try: http://www.thefreedictionary.com/sugar The chemical formula for "table" sugar is C12H22O11. There are other types as well, notably fructose and glucose.

  55. Chemistry

    The hydrolysis of sucrose (C12H22O11) produces fructose and glucose (each C6H12O6). Two mechanisms are proposed: I) Step 1: C12H22O11 --> C6H12O6 + C6H10O5 (slow) Step 2: C6H10O5 + H2O--> C6H12O6 (fast) II) C12H22O11 + H2O--> C6H12O6 + C6H12O6 Would these

  56. biochemistry

    ) If the loss of each electron represents the liberation of 1.875 x 10-19 J, calculate the number of kJ and Cal (kcal), of fructose and oleate in a 1.00 g sample. (Significant digits count.) Fructose kJ = _____________ Cal = _____________ oleate kJ =

  57. Biology (respiration)

    1* fructose 1 6 biphoshate or diphoshate (which one is it exactly?) 2* what is the molecular formula for fructose 1 6 di/biphosphate? SOME SITES say C(6)H(10)O(6)P and some say C(6)H(14)O(6)P...WHICH IS IT? making me real confused 3* what is the formula

  58. Biology (respiration)

    Okay...so its about glycolysis in ANaerobic respiration QUESTIONS 1* fructose 1 6 biphoshate or diphoshate (which one is it exactly?) 2* what is the molecular formula for fructose 1 6 di/biphosphate? SOME SITES say C(6)H(10)O(6)P and some say

  59. Biology

    Glucose + Fructose=__________________. I am thinking it is sucrose or table sugar but I am not sure.

  60. HELP HELP AP BIOLOGY

    A. Explain the term "concentration gradient". Make sure to discuss the difference between a solution's concentration and a concentration gradient. B. An artificial cell contains 0.2 M FRUCTOSE and 0.8 M glucose, AND 2M SUCROSE. It is placed into a solution

  61. chemistry

    A solution of 11.7 g of fructose in 325 g of ethanol has a boiling point of 78.59 C. The boiling point of ethanol is 78.34 C and kb for ethanol is 1.2 C/m. What is the molecular weight of fructose?

  62. The Calvin Cycle

    How many molecules of CO2 will the calvin cycle consume in generating 2 molecules of fructose 6-phosphate? How many molecules of ATP will the calvin cycle consume in generating 2 molecules of fructose 6-phosphate? How many molecules of NADH will the calvin

  63. Chemistry

    When disaccharide alpha is hydrolyzed, which monosaccharide units are produced? A) D-glucose and D-fructose monosaccharide units B) two D-fructose monosaccharide units C) two D-glucose monosaccharide units

  64. Human biology Coursework

    On the net it has been suggested and my experiment it has been proven that Fructose can break down Vitamin C or atleast stop it from being effective in some way. I can not find ant theories on the net to how this breakdown happpens. As someone who has

  65. nutrition

    The list of ingredients if rom a box of graham crackers. INGREDIENTS: enriched wheat flour (contains niacin, reduced iron, thiamine-vitamin b1, riboflavin-vitamin b2), sugar, hydrogenated soybean oil), graham flour, honey, high fructose corn syrup,

  66. science 2

    6. When aqueous solutions of table salt and silver nitrate are mixed, a white solid forms. This solid is ____. (1 point)soluble a precipitate an alloy a solute 7. Stainless steel is an example of a ____ solution. (1 point)liquid-solid solid-liquid

  67. Biochemistry

    Calculate the ATPs resulting from the total oxidation of the following compounds: a. Fructose-6-phosphate b. 3-Phosphoglycerate c. Succinyl-CoA d. Stearic acid How do I begin?

  68. Biology

    List from least sweet to most sweet: Fructose - glucose - sucrose I'm unsure😫

  69. AP Biology

    in cellular respiration, which compound has the highest free energy (will produce the most ATP when oxidized)? acetyl CoA glucose pyruvate fructose bisphosphate glyceraldehyde-3-phospate

  70. science

    how can we finf the specific rotation of mixture of compounds like fructose and glucose if we don't knw its percentage composition in the mixture

  71. math

    Scientists randomly caught 30 fruit bats at an orchard. They tagged the fruit bats and then released them. Several weeks later, they captured 20 fruit bats at the same location. They found that 4 of those fruit bats had tags. Assume the population of fruit

  72. 9th Grade Biology

    You set up 5 samples that contained a range of sucrase concentrations but the same amount of substrate (sucrose). - The pH was kept constant in all tubes buy using the same amount of buffer. - The temperature was kept constant in all tubes (room temp) - A

  73. Biology

    Of the following substances, which would react positively with Biuret's, Lugol's, and Benedict's? 1. water 2. starch 3. glucose 4. maltose 5. sucrose 6. fructose 7. galactose 8. albumin 9. hamburger juice 10. onion juice 11. milk 12. potato juice 13.

  74. math

    Janie is making fruit bars for the bake sale. She uses 1/4 cup of sugar for each batch she makes. She uses 8 cups of sugar to make all the batches. How many batches of fruit bars does Janie make?

  75. Science

    How does osmosis explain the fact that a watery syrup forms when you put sugar on strawberries? Sugar dissolves in some of the surface water molecules making a high concentration of sugar solution. The osmostic pressure is changed significantly; the result

  76. Science

    Reggie has a sample of raw sugar made up of large particles and a sample of white sugar made up of much smaller particles. He dissolved 1 tsp. of each sample in 1 cup of water. Which dissolved fastest? a) Both dissolved at the same rate b) The white sugar

  77. Chemistry

    Ok, so in my gen chem 1 class, the teacher showed us that ethanol would not dissolve a sugar cube while water dissolves a sugar cube easily. No explanation was given, she just told us we would find out in gen chem 2. Here i am in gen chem 2, and the same

  78. Help: biology

    1. You have in front of you three vials containing a clear liquid. You are told that each vial contains one of the following carbohydrates: Fructose, Sucrose, Amylose. What experiments could you carry out to determine the composition of each vial. What

  79. critical cognition

    Can someone help me evaluate this hypotheses? Evaluate the following hypothese using the five criteria ( The Scientific Method ) for a good scientific explanation. If the hypothesis is inadequate, formulate a new hypotheses and discuss why it is better. A.

  80. 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

  81. chemistry

    Calculate the number of C, H, and O atoms in 4.50 g of glucose (C6H12O6), a sugar. help please?

  82. biochem

    Two samples of double-stranded DNA have been prepared. Nucleotide analysis reveals that sample 1 is found to be 21% A, while sample 2 is 26% G. Knowing this, which of the following statements is true? Sample 1 has a higher AT content than Sample 2. Sample

  83. Biology

    If .03 M of sucrose and .02 M of glucose rest inside a cell and .01 M of sucrose, glucose, and fructose rest outside in the environment, which solutes will exhibit next diffusion into the cell and out of the cell?

  84. Chemistry

    In winemaking, the sugars in grapes undergo fermentationby yeast to yield CH3CH2OH and CO2. During cellularrespiration, sugar and enthanol are "burned" to water vapor andCO2. A) Using C6H12O6 for sugar, calculate ÄH of fermentation and of

  85. chemistry

    In winemaking, the sugars in grapes undergo fermentationby yeast to yield CH3CH2OH and CO2. During cellularrespiration, sugar and enthanol are "burned" to water vapor andCO2. A) Using C6H12O6 for sugar, calculate ÄH of fermentation and of

  86. chemistry

    In winemaking, the sugars in grapes undergo fermentationby yeast to yield CH3CH2OH and CO2. During cellularrespiration, sugar and enthanol are "burned" to water vapor andCO2. A) Using C6H12O6 for sugar, calculate ÄH of fermentation and of

  87. chemistry

    sucrose change of H is -2226.1kj/mol fructose change of H is -1265.6KJ/mol calculate the enthalpy change for the hydrolysis reaction of sucrose. sucrose + H2O(l)-> C6H12O6(s)+Fructose Is it just the products-reactants?? I'm confused.

  88. Bio

    Is going from fructose 6-phosphate to fructose 1,6-bisphosphate, phosphorolation?

  89. Chemistry

    When glucose-6-phosphate and fructose-6-phosphate are mixed with the enzyme phosphohexose isomerase under standard conditions, the final equilibrium concentration of glucose-6-phosphate is 1.33 M and the final concentration of fructose-6-phosphate is 0.66

  90. Biochemistry

    Is anyone familar with the equilibrium reactions that convert the ketone group of fructose into an aldehyde group so fructose give a positive Fehling's Test? I know it will as we received so in class but not sure how the reaction takes place.

  91. BIOLOGY

    Table Sugar can react with water to form 2 other compounds, glucose & fructose. But, when you add sugar to a glass of water the reaction is very slow - WHY? What would it need to speed it up?

  92. Molecular bio

    Which of these sugar(s) would contain amylose? (*I looked it up but there wasn't a clear answer* ) Glucose Fructose Sucrose Lactose Starch -This one is amylose because it's a long chain. What about the other four?

  93. chemistry

    When disaccharide alpha is hydrolyzed, which monosaccharide units are produced? A) D-glucose and D-fructose monosaccharide units B) two D-fructose monosaccharide units C) two D-glucose monosaccharide units

  94. yo help!

    k PGAL may be converted to glucose phosphate right? what other products can be produced???? Glyceraldehyde 3-phosphate can be converted to dihydroxyacetone phosphate, and these two molecules can be joined by aldolase to form fructose 1 ... glyceraldehyde

  95. Chemistry

    Galactose and Fructose are called isomers of glucose. Why?

  96. Organic CHM II

    What are the most important monosaccarides in biological systems? glucose and fructose?? is that correct?

  97. chemistry

    if 8 moles of fructose are fermented and 320g of ethanol is obtained,what is the yield of the fermentation

  98. Biology

    Which monosaccharide requires the most steps to proceed through glycolysis? A. Glucose B. Galactose C. Fructose

  99. Science

    calculate the amount of fructose 6 phosphate formed from glucose 6 phosphate in a 10 milliliter incubation system if 0.5M G6P is incubated overnight at 25C and the equilibrium constant is 0.67.

  100. Biology

    What is the function of lactose in the body? I know what lactose is, but I'm having trouble finding if it does anything in the body (give energy...?) And also, what is the function of fructose in plants? I'm having the same problem.

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