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The given beaker contains 100 mL of the organic solvent pentane (
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General, Organic, and Biological Chemistry - 4th edition
- 2 When corn is allowed to ferment, the fructose in the corn is converted to ethyl alcohol according to the following reaction C,H12O6(aq) –→ 2C,H;OH(1) + 2CO2(g) (a) What volume of ethyl alcohol (d = 0.789 g/mL) is produced from one pound of fructose? (b) Gasohol can be a mixture of 10 mL ethyl alcohol and 90 mL of gasoline. How many grams of fructose are required to produce the ethyl alcohol in one gallon of gasohol? %3Darrow_forwardThe combustion of butane produces heat according to the equation2C4H10(g) + 13O2(g) → 8CO2(g) + 10H2O(l), ΔH°rxn= –5,314 kJ/mol.How many grams of butane must be burned to release 1.00 × 104 kJ of heat? -the answer is 219g, what's the solution?arrow_forwardDilution means adding water to something so that the ratio of solute to solvent is less than in the original solution. Some people say, “Dilution is the solution to pollution.” Do you think this statement true? Could you ever add enough water so that there would be no drink mix—that the water would be the same as in cup #6, pure water? Do you think you could you ever add enough water to a pollutant to make it disappear completely? Why or why not?arrow_forward
- You are a chemist and FBI crime scene investigator and find a sealed bag containing a suspicious white substance. The substance turns out to be a powder containing fentanyl (C22H28N2O, 336.470 g/mol) and lactose (C12H22O11) 342.298 g/mol). To find out exactly how much fentanyl was in the bag, you use a 100.0 mL volumetric flask to dissolve 1.000 g of the white powder in water. The osmotic pressure for the solution at laboratory temperature, 21.7 °C, is 538.2 mmHg. What percent of the white powder is fentanyl?arrow_forwardWhat amount (in mol) and what mass (in g) of water can be produced when 82.1 ug of ethane reacts with 61.4 ug of molecular oxygen? C,H, (8) +O2(g) – H,O(1) +CO2(g) A: 1.64 × 10°; 2.96 × 10¬5arrow_forwardYou want to prepare 42.0 L of solution with a contamination of 50.0 mg/L copper. You start with 42.0 L of tap water and add to it copper sulfate pentahydrate, CuSO4·5(H2O). How many grams copper sulfate petnahydrate will you use?arrow_forward
- 25ml of water is used to extract NO ‐1 from A wet soil sample weighing 10 grams. Another sample of 10-gram soil sample is oven dried and found to weigh 5 grams when dry. The [NO ‐1] of the extract is determined to 5mg NO ‐1/ml. What is the NO ‐1 of the soil in the unit's mg of NO ‐1 /g dry soil?arrow_forwardAre each of the following things good or bad in a distillation? (a) The distillation stops at one point, and the temperature drops. (b) The material in the distilling flask boils violently and some sloshes up and into the condenser (c) You forget to run water through the condenser. (d) Distillate drops out of the condenser at the rate of about one drop per second.arrow_forwardThe solubility of a substance is 30 g per 100 mL of water at room temperature, 50 g per 100 mL of water at 80 ∘C. A student mixed 40 g of this substance with 100 mL of water at room temperature (stage 1), and then heated the mixture to 80 ∘C (stage 2). The mixture is then slowly cooled down to room temperature without any precipitation (stage 3). Finally, the student added a small crystal to the mixture and saw precipitation took place. This mixture is supersaturated at stage 2 heterogeneous at stage 1 homogeneous at stage 4 saturated at stage 3arrow_forward
- Determine the freezing point (in °C) of a solution that contains 204 g of C6H1206 dissolved in 234 mL of acetic acid (density = 1.05 g/mL). Pure acetic acid has a freezing point of 16.6°C and a K = 3.90°C/m.arrow_forwardA 12.5 g of sugar is added with 150 mL of water. Calculate the amount of sugar (C12H22O11; molar mass= 342.3 g/mol) in the solution.arrow_forwardA student dissolves 17. g of methanol (CH3OH) in 500. mL of a solvent with a density of 1.11 g/mL. The student notices that the volume of the solvent does not change when the methanol dissolves in it. Calculate the molarity and molality of the student's solution. Round both of your answers to 2 significant digits. molarity = molality = 0 0 010 X 74 ☐☐ 3 " doarrow_forward
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage LearningChemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning