U.S. fuel ethanol producers mostly use food grains and crops with high starch and sugar content as feedstocks for making … In the case of mixtures of ethanol and water, this minimum occurs with 95.6% by mass of ethanol in the mixture. Lithium Atomic Mass: 1 Comment. Remove as much of the remaining ethanol as possible. Molar mass of H2O = 18.02 g/mol. Ethanol - Specific Heat vs. Temperature and Pressure The calculator below can be used to estimate the density and specific weight of liquid ethanol at given temperature. Calculate the Molar Mass of Ethanol, C2H5OH - Molar Mass ... How do you calculate vapor pressure of ethanol? Ethanol / Molar mass. ethanol: PubChem CID: 702: Formula Weight: 46.07: Percent Purity: ≥99.5%: Description: For nucleic acid purification and precipitation. 1). Properties of aqueous ethanol solutions. Specific weight is given as N/m 3 and lb f / ft 3. ... Five mL of ethanol has a mass of 3.9 g, and 5.0 mL of benzene has a mass of 44 g. Which liquid is denser? MFCD00051020. Determination of the Molar Mass of Ethanol Abstract: The molar mass of ethanol was determined by using the ideal gas law. Applications. Ultrapure molecular biology grade ethanol is used for the purification and precipitation of biomolecules such as nucleic acids and proteins. We want to calculate the mass in grams from a volume in milliliters. Molar Mass of ethanol - ModCalculator Ethanol, derived from plant material, is a renewable energy source because the production and combustion of ethanol completes a cycle. The amounts of carbon dioxide and water that plants use are returned back to the atmosphere when ethanol, made from plant starch or cellulose, is combusted. Mass (PDF) Visualizing Dermal Permeation of Sodium Channel ... Ethanol Ethanoic Acid 50 mM in D-PBSFormula weight: 78. Ethyl Alcohol Absolute (Dehydrated, Synthetic) USP, BP/EP, JP Grade MATERIALS SAFETY DATA SHEET (MSDS) Ethanol (C2H5OH) It is a colorless liquid. Alternative-energy research at Oregon State University is charting a path toward the mass adoption of clean cars powered by direct-ethanol fuel cells. The endosperm is mostly composed of starch, the corn’s energy storage, and protein for germination. An alternative notation is CH3−CH2−OH, which indicates that the carbon of a methyl group (CH3−) is attached to the carbon of a methylene group (−CH2–), which is attached to the oxygen of a hydroxyl group (−OH). While methanol, also known as methyl alcohol is composed of only one carbon atom. This means that in 1 mol of ethanol, there are 46 g, thus the term molecular mass and molar mass are often used interchangeably. •Mass of ethanol product = 10.05 kg •Mass of water vapor = 0.8195 kg . Ethanol has 2 carbon atoms, 5 hydrogen atoms, and an OH group. It comprises of a methyl group attached to the carboxylic acid functional … T1=(50.0+ 273.15) K = 323.15 K ; P1=? Specific heat (C) is the amount of heat required to change the temperature of a mass unit of a substance by one degree.. Isobaric specific heat (C p) is used for ethanol in a constant pressure (ΔP = 0) system. A bottle of wine contains 12.5% ethanol (#CH_3CH_2OH#) by volume. mass =density×volume (m=ρV). What is the molar mass of ethanol? Glucose and ethanol concentrations will be analyzed by the YSI biochemistry analyzer. Resuspend the cDNA pellet in 300 μL of TEN … 0 2 It is a picture of yellow dent corn, which is commonly used for ethanol production. Zhenxing Feng of the OSU College of Engineering helped lead the development of a catalyst that solves three key problems long associated with DEFC, as the cells are known: low efficiency, … Therefore, the initial mass of grain in a fermenter can be estimated by the use of a ma-terials balance for the mass of ash (Fig. 1 = 4 6. What is the molar mass of ethanol in grams? Carbon = 12.01 g/mol Oxygen = 16.00 g/mol Hydrogen = 1.01 g/mol To calculate for the formula, we should multiply the atomic weights of each element to the corresponding number of moles in the compound. To convert a quantity of a substance or material expressed as a volume to mass we simply use the formula: mass = density × volume. Mass concentration, g/ (100 ml) at 15.56 °C. 1 g / m o l Hence the correct option is C. Solve any question of Some Basic Concepts of Chemistry with:- mass spectrum, which is the data resulting from an MS measurement. Chemicals called enzymes help to break apart the ethanol molecule into other compounds (or metabolites), which can be processed more easily by the body. Data obtained from Lange 1967. For example, you need to make 3000 g of a 5% solution of sodium chloride. Calculate the molar mass of C2H5OH, ethanol?What is the molar mass of ethanol? Molar mass of CH3CH2OH = 46.06844 g/mol Convert grams Ethanol to moles or moles Ethanol to grams. Molar mass of ethanol is 46.0684 g/mol. Thank you for putting up explanations of so many topics on your website! Molar mass of ethanol (C 2 H 5 O H) = 2 (1 2) + 6 (1) + 1 6. It occurs naturally through the fermentation of sugars by yeasts and can be derived from many sources including corn, wheat, grain sorghum, barley, sugar cane and sweet sorghum. = 1.85mol. In a particular fermentation process, 200.0 g of glucose is fully converted. Problem 4: To Determine the Molecular Formula. What is the formula mass of ethyl alcohol, C 2 H 5 OH? molecular weight of Ethanol or mol The molecular formula for Ethanol is CH3CH2OH. The atomic weight for these elements are the following. The same is true of a mole. Equation summary: PV=nRT Data Results This means that in 1 mol of ethanol, there are 46 g, thus the term molecular mass and molar mass are often used interchangeably. Its molecular formula is CH3CH2OH. Given, mass of ethanol = 2.3g molar mass of ethanol = 46.07 g/mol so, Number of moles of ethanol = mass/molar mass = 2.3/46.07 = 0.0499240287 mol As we known, number of molecules in 1 mole = …. ››Ethanol molecular weight. Ethanol (also called ethyl alcohol, grain alcohol, drinking alcohol, or simply alcohol) is an organic chemical compound.It is a simple alcohol with the chemical formula C 2 H 6 O. Ethanol is sometimes abbreviated as EtOH, using the common … The vol% value for density = 0.90418 is written as 52.9, but I believe it was meant to be 62.9. How to convert 1 milliliter of ethanol to grams To convert a quantity of a substance or material expressed as a volume to mass we simply use the formula: mass = density × volume We want to calculate the mass in grams from a volume in milliliters. Get control of 2021! How to convert 1 milliliter of ethanol to grams. Figure 7.8 shows the general composition of corn. T/F. In this case, ethanol’s molecular mass is 46 g/mol. 2 ethanol + 2CO. This means that in 1 mol of ethanol, there are 46 g, thus the term molecular mass and molar mass are often used interchangeably. It has a role as an antiseptic drug, a polar solvent, a neurotoxin, a central nervous system depressant, a teratogenic agent, a NMDA receptor antagonist, a protein kinase C agonist, a disinfectant, a human metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia … a. Exact Mass: 52.079525286: Computed by PubChem 2.1 (PubChem release 2021.05.07) Monoisotopic Mass: 52.079525286: Computed by PubChem 2.1 (PubChem release 2021.05.07) Topological Polar Surface Area: 20.2 Ų: Computed by Cactvs 3.4.8.18 (PubChem release 2021.05.07) Heavy Atom Count: 3: Computed by PubChem: Formal Charge: 0: Computed by … Isotopologues: The example solution contains 1.7 moles of ethanol in 250 mL of solution. Molarity is expressed in moles per liter and there are 1000 mL in 1 L; therefore, there are 1.7 moles per 0.25 L. Determine the molarity in terms of moles per liter. The previous step identified 1.7 moles of ethanol per 0.25 liters of solution. What mass of oxygen must have leaked into the bottle? The magnitude of alterations occurring among moderate drinkers has remained obscure. View the full answer. #rho=m/V# #m# is … What mass of ethanol is present in 250 g of solution? Ethanoic acid has the second simplest possible structure of a carboxylic acid after Methanoic acid. However, it can be a gas, solid, or supercritical fluid. What is the mass of 62.0 mL of ethanol? IUPAC Standard InChIKey: LFQSCWFLJHTTHZ-UHFFFAOYSA-N Copy CAS Registry Number: 64-17-5 Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. property owners finance energy upgrades? : 64-17-5 Light Spirits, Extra Neutral Potable, Neutral Potable, Rectified Extra Neutral and Molecular Mass : 46,08 High Purity Extra Neutral Potable Alcohol) Chemical family : Aliphatic Alcohol NIOSH No. Controlled: The following variables were kept constant to ensure consistency and fairness in χ C 2. View the full answer. CH 3 CH 2 OH. The chemical formula of ethanol is given by-. The mass of one ethanol (C2H6O) molecule is 7.65 × 10-23 grams. Ethanol is a primary alcohol that is ethane in which one of the hydrogens is substituted by a hydroxy group. The mass of ash in an ethanol fermentation is given by the ash content of a stream multiplied by the total mass of the stream. Due to the presence of –OH groups, ethanol molecules can form hydrogen bonds with other hydrogen bond forming molecules. I believe there is a typo in the ethanol-water mixtures table. Choose the actual unit of temperature: °C °F K °R. Dec 13 | So far, only two property owners have used PACE in Massachusetts. 1 grams Ethanol is equal to 0.021706834440237 … for saxitoxin, lidocaine, aconitine, and BTX-A using ethanol as and prilocaine in a ratio of 1:1 by weight. It is a constitutional isomer of dimethyl ether. Ethanol is made from biomass. Repeat this step two to three times. Ethanol is made from biomass. Objective: We examined the links between moderate ethanol consumption, … The density of ethanol is 0.789 g/cm^3 and the density water is 1.000 g/cm^3. About Ethanol; 1 cubic meter of Ethanol weighs 789.3 kilograms [kg] 1 cubic foot of Ethanol weighs 49.27439 pounds [lbs] Ethanol weighs 0.7893 gram per cubic centimeter or 789.3 kilogram per cubic meter, i.e. (And, knowing that, we could use it to find the … : … To convert a quantity of a substance or material expressed as a volume to mass we simply use the formula: mass = density × volume. What is the formula mass? Its molar mass is 46.06844 g / moL and its boiling point is 78.4°C. Yeast converts glucose to ethanol and carbon dioxide by anaerobic fermentation, as represented by the equation: glucose ethanol + carbon dioxide. The molar mass was determined to be 45.2 0.3 g/mol. How many molecules are present in the sample of ethanol? The atomic weight for these elements are the following. Ethanol and methanol are just two kinds of alcohols. The gas was volatilized in a fixed volume at atmospheric pressure in a 99.3 C water bath. U.S. fuel ethanol producers mostly use food grains and crops with high starch and sugar content as feedstocks for making … It is composed of 2 atoms of C, 6 atoms of H and 1 atom of O. Molar mass of carbon, hydrogen and oxygen are 12, 1, and 16 respectively. Ethanol-water solution, NIST(R) SRM(R) 2894, nominal mass fraction 0.1%. It is the starch that is used for making fuel. Anurag Kunwar October 16, 2019 at 6:53 pm. Show Answers. Temperature and Pressure - Online calculator, figures and tables showing density and specific weight of ethanol at temperatures ranging from -25 to 325 °C (-10 to 620 °F) at atmospheric and higher pressure - Imperial and SI Units. Our molar mass calculator uses the periodic table and the chemical formula to solve for the molar mass of a chemical compound based on the compound's empirical formula. b. Chemical Formula for Ethanol (Ethyl Alcohol) C 2 H 5 OH. Hint. 0.1 liter of ethanol = 0.0783 kilogram: 1 / 5 liter of ethanol = 0.157 kilogram: 0.3 liter of ethanol = 0.235 kilogram: 0.4 liter of ethanol = 0.313 kilogram: 1 / 2 liter of ethanol = 0.392 kilogram: 0.6 liter of ethanol = 0.47 kilogram: 0.7 liter of ethanol = 0.548 kilogram: 0.8 liter of ethanol = 0.626 kilogram: 0.9 liter of ethanol = 0.705 kilogram: 1 liter of ethanol = 0.783 kilogram Equation summary: PV=nRT Data Results The molecular mass of a molecule is measured in g/mol. Workers in fuel sectors (including, but not limited to nuclear, coal, and gas types and liquid fuels) supporting the mining, manufacturing, logistics, transportation, permitting, operation/maintenance, and monitoring of support for resources. That is, $\dfrac{\left( 6\times 1 \right)}{48}\times 100=12.5%$. Density relative to 4 °C water. What is the percent yield for the conversion of ethanol to acetic acid if O 2 is in excess? Carbon : 1 2 . Ethanol is a renewable biofuel because it is made from biomass. [5] [5] As you calculated in Example 1, the molecular mass of ethanol is 46.069 amu. The body processes and eliminates ethanol in separate steps. Ethanol-water solution, NIST(R) SRM(R) 2895, nominal mass fraction 0.2%. Ethanol D6 >99%. Ethanol, also known as ethyl alcohol, consists of carbon, hydrogen and oxygen—its chemical formula is C 2 H 6 O—and is the active ingredient in alcoholic drinks. Ethanol: For 1 mol ethanol we have 1 mol oxygen. Because 1 mol of ethanol contains 2 mol of carbon atoms (2 × 12.011 g), 6 mol of hydrogen atoms (6 × 1.0079 g), and 1 mol of oxygen atoms (1 × 15.9994 g), its molar mass is 46.069 g/mol. Molar mass of ethanol (C 2 H 5 O H) = 2 (1 2) + 6 (1) + 1 6. Mass of water = 100−85 = 15g. Ethanol is usually produced by combining an ethyl group ( \(CH_{3}CH_{2}-\) ) to a hydroxyl group (-OH). Mass spectra contain a ... produced from EI MS of ethanol (CAS registry number 64-17-5) is presented in Table 1, which was adapted from Raphaelian’s previously published edition of this article. 1 = 4 6. Alternative-energy research at Oregon State University is charting a path toward the mass adoption of clean cars powered by direct-ethanol fuel cells. Gibco™ 2-Mercaptoethanol (also known as beta-mercaptoethanol or BME) is a potent reducing agent used in cell culture media to prevent toxic levels of oxygen radicals. 46.07 g/mol. Ethanol and biofuel production, refining, and distribution. Ethanol is a 2-carbon alcohol. In this case, ethanol’s molecular mass is 46 g/mol. The molecular mass of a molecule is measured in g/mol. The molecular mass of a molecule is measured in g/mol. Substances with a high density, like steel, have molecules that are packed together tightly. Ethanol is a renewable biofuel because it is made from biomass. Your … Hydrogen = 1.01 g/mol. Because 1 mol of ethanol contains 2 mol of carbon atoms (2 × 12.011 g), 6 mol of hydrogen atoms (6 × 1.0079 g), and 1 mol of oxygen atoms (1 × 15.9994 g), its molar mass is 46.069 g/mol . Let us explore the Characteristics of ethanol further. Ethanol is a clear, colorless alcohol made from a variety of biomass materials called feedstocks (the raw materials used to make a product). In this case, ethanol’s molecular mass is 46 g/mol. The world’s sugar supply balance is expected to deteriorate in the 2021-22 season that started in October due to higher use of sugarcane to ethanol production in … Repeat Step 3 once. 2-(2-Ethoxyethoxy)ethanol, also known under many trade names, is the organic compound with the formula CH 3 CH 2 OCH 2 CH 2 OCH 2 CH 2 OH. The density of ethanol at room temperature = 0.789 g/mL? Ethyl-d5 alcohol-d, anhydrous. CORVALLIS, Ore. – Alternative-energy research at Oregon State University is charting a path toward the mass adoption of clean cars powered by direct-ethanol fuel cells. Mass spectra contain a ... produced from EI MS of ethanol (CAS registry number 64-17-5) is presented in Table 1, which was adapted from Raphaelian’s previously published edition of this article. The density of a substance is a measure of how much mass is packed into a certain volume of the substance. Ethanol D6 anhydrous. No of moles of water = 1815. . We want to calculate the mass in kilograms from a volume in liters. Yeast cell mass will Explanation: Remember that density is given by . That is why it is important to distinguish between a percentage by volume or weight. Ethanol-d6, for NMR, anhydrous, 99 atom % D. Ethanol-d6-EINECS 216-162-2. The mass density profile showed that, on the average, ethanol molecules prefer to reside 0.5 nm below the lipid headgroups, whereas the RDF shows that the three-dimensional preferred distance is only 0.38 nm. Ethanol is a flammable, volatile liquid with a characteristic odour and a sweet taste. Ph Eur - Find MSDS or SDS, a COA, data sheets and more information. A solvent is the component of a solution that is present in the greatest amount. It has the mass composition of 10.06 % of carbon, 0.85 % of hydrogen, and 89.09 % of chlorine. In this case, ethanol’s molecular mass is 46 g/mol. What is the vapor pressure of ethanol at 19c? Hi! As you calculated in Example 1, the molecular mass of ethanol is 46.069 amu. Formula for Ethyl Alcohol. Ethanol is a clear, colorless alcohol made from a variety of biomass materials called feedstocks (the raw materials used to make a product). Mass O = 0.75 moles * 16.0 g/mol = 12.0 grams O 2-Mercaptoethanol is not stable in solution, so most protocols require daily supplementation. DTXSID80934298 (~2~H_5_)Ethan(~2~H)ol. In this case, ethanol’s molecular mass is 46 g /mol. 1 Answer Nam D. Jan 15, 2018 #48.9# grams of ethanol. 1 milliliter of ethanol weighs 0.783 gram. Quote of the day ... "It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is the most adaptable to change." Show me Another Quote! To convert a quantity of a substance or material expressed as a volume to mass we simply use the formula: 1. Furthermore, What is the molar mass of ethanol in grams C2H5OH?, Ethanol, C2H5OH, is a volatile, flammable, colorless liquid. It is the substance in which the solute is dissolved. 40.0 torr. Fermentation is a complex chemical process of making wine by converting glucose into ethanol and carbon dioxide: C 6 H 12 O 6 (s) 2 C 2 H 5 OH (l) + 2 CO 2 (g) A. Calculate the mass of ethanol produced if 500.0 grams of glucose reacts completely. b) If the fermentation process were carried out in an open container, would the … Independent: Mass of the alcohol (ethanol and isopropanol) - 50 g, 60 g, 70 g, 80 g, and 90 g. Dependent: The enthalpy of combustion of each alcohol (by finding out the temperature change for each mass). Given, mass of ethanol = 2.3g molar mass of ethanol = 46.07 g/mol so, Number of moles of ethanol = mass/molar mass = 2.3/46.07 = 0.0499240287 mol As we known, number of molecules in 1 mole = …. About Ethanol Ethanol weighs 0.7893 gram per cubic centimeter or 789.3 kilogram per cubic meter, i.e. What is the vapor pressure of ethanol at 50.0 °C? NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data) T. A chemical change alters the chemical composition of a substance, and therefore a new substance is produced. A new program offers one pathway. 2. ; At ambient pressure and temperature the isobaric … Ethanoic acid (also commonly known as the Acetic acid) is a two-carbon acid and hence is the second member of the carboxylic acid family after methanoic acid (which is a one-carbon carboxylic acid). The molecular mass is actually the total mass of a single molecule of the ethanol, although the molar mass of ethanol is the overall mass of the molecules in one mole of the concerned elements. In this context, the mass of the material could be expressed using the unit of g/mol. The same is true of a mole. It is produced by the ethoxylation of ethanol.. v (ethanol) = 5 ml v (benzene) = 5 ml. Moles of H2O = 1.0 . T/F. One can consider the mass of an object as a measure of how much physical “stuff” makes up that object. Molar mass of formic acid = 46.03 g/mol. Moles of formic acid = 0.60 moles. How many molecules are present in the sample of ethanol? B. Chemistry. density of ethanol is equal to 789.3 kg/m³; at 20°C (68°F or 293.15K) at standard atmospheric pressure . This experiment will track three parameters throughout the fermentation: glucose concentration, ethanol concentration and yeast cell mass. 0 1 × 2 = 2 4 . Compound name is (c2h5)2nh diethylamine. It is the atomic mass of included elements in a compound that molecular mass depends on. Ethanol, that is also known as ethyl alcohol falls with the chemical structure with two carbon atoms. - Mass percent is one method to express the concentration of a substance in the particular mixture. It has been computed by the scientists that the molar mass of ethanol is 46.864 g/mol. Temperature. a) What is the total mass of ethanol and carbon dioxide at the end of the reaction? The SI base unit for amount of substance is the mole. ethanol yield. This means that in 1 mol of ethanol, there are 46 g, thus the term molecular mass and molar mass are often used interchangeably. (2020) Answered 3 years ago Ethanol is C H 3 C H 2 O H ( C 2 H 5 O H) Molecular Mass of Ethanol = 2 ( 12) + 5 ( 1) + 16 + 1 = 24 + 5 + 17 = 46 Now, How will Mass. Ethanol - Density and Specific Weight vs. To calculate for the formula, we should multiply the atomic weights of each element to the corresponding number of moles in the compound. 1 g / m o l Hence the correct option is C. Solve any question of Some Basic Concepts of Chemistry with:- Density at 20 °C relative to 20 °C water. For ethanol we provide a table that allows for the most commonly used concentrations in hand rubs / gel to compare the values of both scales. Calculate the volume of carbon dioxide gas produced at STP if 100.0 grams of glucose reacts. What is the molar mass of ethanol in grams? ; Isochoric specific heat (C v) is used for ethanol in a constant-volume, (= isovolumetric or isometric) closed system. Ethanol CAS 64-17-5 absolute for analysis EMSURE® ACS,ISO,Reag. Ethanol (also called ethyl alcohol, grain alcohol, drinking alcohol, or simply alcohol) is an organic chemical compound.It is a simple alcohol with the chemical formula C 2 H 6 O. Ethanol Water mixtures. The density of ethanol is 0.816 g/mL and the density of water is 1.00 g/mL. Trade name : Ethanol (Industrial, Absolute or Anhydrous, Chemical abstract No. Dry the cDNA pellet in a Thermo Scientific™ SpeedVac ™ concentrator for 2 minutes or at room temperature for 5–10 minutes. Ethyl alcohol is a colourless, volatile liquid with a characteristic odour and a pungent taste. You can rearrange and solve for the mass of solute. Answer (1 of 7): Basically the formula of ethanol is C2H5OH and as you must be knowing, molar mass is the total mass of the 1 molecule of the given compound. This means that in 1 mol of ethanol, there are 46 g, thus the term molecular mass and molar mass are often used interchangeably. There is an option 13.13% which is approximately the mass percent of hydrogen in ethanol. It is a popular solvent for commercial applications. 1 g/cm 3 = 1 kg/l = 1000 kg/m 3 = 62.428 lb/ft 3 = 0.03613 lb/in 3 = 1.9403 sl/ft 3 = 10.0224 lb/gal (UK) = 8.3454 lb/gal (US liq) = 0.5780 oz/in 3 = 0.7525 ton (long)/yr 3 The molar mass was determined to be 45.2 0.3 g/mol. Molecular weight of Ethanol Ethanol molecular weight Molar mass of CH3CH2OH = 46.06844 g/mol Convert grams Ethanol to moles or moles Ethanol to grams Molecular weight calculation: 12.0107 + 1.00794*3 + 12.0107 + 1.00794*2 + 15.9994 + 1.00794 Percent composition by element Calculate the molecular weight of a chemical compound It has the mass composition of 2.06 % of hydrogen, 32.69 % of sulphur, and 65.25 % of oxygen. mass spectrum, which is the data resulting from an MS measurement. Ethanol-d6, 99.96 atom % D. AKOS015903638. The molecular mass of a molecule is measured in g/mol. DESI mass spectra of selected skin regions outlined with a small black box in the optical images in (c) and (f) are shown for STX-ge (d) in ethanol and (g) in DMSO. Molecular weight calculation: 12.0107 + 1.00794*3 + 12.0107 + 1.00794*2 + 15.9994 + 1.00794 Ethanol-water solution, NIST(R) SRM(R) 2896, nominal mass fraction 0.3%. It is a solvent for dyes, nitrocellulose, paints, inks, and resins. The boiling point of this mixture is 78.2°C, compared with the boiling point of pure ethanol at 78.5°C, and water at 100°C. Hexadeuteroethanol. - Also, we can find the mass percent of hydrogen in this ethanol in this same way. Volume concentration, %. The weight of gasoline is dependent on the temperature, as mentioned above, but it also depends on how much alcohol has been added. Today, that's sometimes a lot. So we come up with. 1 gallon of water equals 8.33 lbs. 1 gallon of gasoline equals 5.8 to 6.5 lbs. 1 gallon of ethanol equals 6.59 lbs. No of moles of ethanol = 4685. . Step 2: Calculate moles of oxygen in each .