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July 25, 2014

Search: A solution of ethanol (C2H5OH) in water is prepared by dissolving 64.9 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution. What is the molarity of the ethanol in this solution?

Number of results: 33,762

Chemistry #11
A solution of ethanol (C2H5OH) is prepared by dissolving 35.0 ml of ethanol in enough water to make 120.0 ml of solution. What is the molarity of the ethanol in this solution? 46.07 g= molar mass of ethanol .079 g/ml=density
October 14, 2013 by Chelsea

chem
A solution of ethanol (C2H5OH) in water is prepared by dissolving 57.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 240.0 mL of solution. What is the molarity of the ethanol in this solution?
November 3, 2007 by mel

Chemistry
A solution of ethanol (C2H5OH) in water is prepared by dissolving 61.9 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution. What is the molarity of the ethanol in this solution?
October 27, 2010 by Andrea

Chemistry
A solution of ethanol (C2H5OH) in water is prepared by dissolving 76.9 mL of ethanol (density 0.79 g/cm^3) in enough water to make .250 L of solution. What is the molarity of ethanol in this solution?
May 6, 2010 by Anonymous

CHEMISTRY
An ethanol-water solution is prepared by dissolving 10.00 ml ethanol C2H5OH (density=0.789g/ml) in sufficient water to produce 100.00 ml of solution with a density of 0.982g/ml. What is the concentration of ethanol in this solution? Expressed as ml. a.)%volume b.)%mass c.)%m/v...
November 13, 2013 by ADRIAN

chemistry
A solution of ethanol, C2H5OH, is prepared by dissolving 25.0 mL of ethanol in enough water to give a total volume of 250.0 mL. What is the percent-by-volume concentration of ethanol?
May 10, 2013 by Adrian

Chemistry
The molarity and the molality of a solution prepared by dissolving 2.00 g of ethanol C2H5OH with 99.0 g of water to give a final volume 101 mL are ______Molarity and _______molality. How do I do this?
August 4, 2008 by Blair

chemistry
A solution of ethanol (C2H50H) in water is prepared by dissolving 76.9ml of ethanol (density0.79g/cm3) in enough water to make 0.25L of solution. What is the molarity of ethanol in this solution Who helps me
September 29, 2012 by Fai

chemisty problem help
Carbon-12 contains 6 protons and 6 neutrons. The radius of the nucleus is approximately 70 pm. Calculate the volume of the nucleus and the volume of the atom. What percentage of the carbon atom's volume is occupied by the nucleus? Can someone tell me how to do this? Volume= 4/...
February 8, 2007 by Tagen

CHEMISTRY
ETHANOL (C2H5OH) HAS A DENSITY OF 0.80g/ml. IF A 10%(v/v) MIXTURE OF ETHANOL IN WATER WAS PREPARED HOW MANY GRAMS OF ETHANOL WOULD BE IN 100ML OF THE MIXTURE? (ASSUMING MIXED VOLUME IS THE SUM OF THE PARTIAL VOLUME)
April 25, 2011 by PLEASE HELP!

chemistry
What is the percent by volume (% v/v) of a solution made by mixing 12 ml of ethanol (C2H5OH) with 48 ml of water? b) Assuming the density of ethanol is 0.789g/ml, what is the molarity of this solution?
March 19, 2013 by ben

CHEMISTRY
You mix 40.0 g of ethanol (C2H5OH, molecular weight = 46.1 g/mol) and 60.0 g of water (molecular weight = 18.0 g/mol) The resulting solution has a density of 920 g/L. a)Calculate the molarity of ethanol in this solution? Answer : 0.06 kg of H2O This is correct. b) At what ...
March 18, 2012 by Jen

Chemistry
What mass of water must be used to dissolve 20.0 grams of ethanol, C2H5OH, to prepare a 0.0500 molal solution of ethanol?
February 10, 2013 by Marcus

molal
the freezing point of ethanol (C2H5OH) is -114.6C. the molal freezing point depression constant for ethanol is 2.00C/m. what is the freezing point (C) of a solution prepared by dissolving 50.0 g of glycerin (C3H8O3, A nonelectrolyte) in 200 g of ethanol. any help would be ...
September 13, 2010 by lisa

molal
the freezing point of ethanol (C2H5OH) is -114.6C. the molal freezing point depression constant for ethanol is 2.00C/m. what is the freezing point (C) of a solution prepared by dissolving 50.0 g of glycerin (C3H8O3, A nonelectrolyte) in 200 g of ethanol. any help would be ...
September 13, 2010 by lisa

molal
the freezing point of ethanol (C2H5OH) is -114.6C. the molal freezing point depression constant for ethanol is 2.00C/m. what is the freezing point (C) of a solution prepared by dissolving 50.0 g of glycerin (C3H8O3, A nonelectrolyte) in 200 g of ethanol. any help would be ...
September 14, 2010 by lisa

science
ethanol, C2H5OH, is responsible for the effts of intoxication felt after drinking alcoholic beverages. When ethanol burns in oxygen, carbon dioxide and water are produced. IF you have 256g of ethanol and 100 grams O2, calculate the amount product produced. You need to write ...
February 6, 2011 by liz

Chemistry II
A solution of ethanol in water is prepared by dissolving 61.0 mL of ethanol (density = 0.79g/mL) in enough water to make 280.0 mL of solution. What is the molarity of the ethanol in this solution? definition of molarity = #mols/L. mass ethanol = m = volume x density = 61.0 mL ...
April 16, 2007 by Jayd

Chemistry
An aqueous solution of ethanol is 14.1M C2H5OH. The density of the solution is 0.853g/mL. What is molality of ethanol in the solution? What is mass % of ethanol in solution? I got the molality which is -21.7 ethanol, but I can't figure out how to get the mass % from the molality?
January 14, 2013 by Robert

college chem
. Jack Daniels Tennessee whiskey is 40.00% ethanol by volume. However, % alcohol by mass is quite different from % by volume. The molality of ethanol in an aqueous solution that is 40.00 % ethanol by volume is 10.88 molal. A) Find the % ethanol by MASS, based on the molality. ...
March 9, 2010 by josh

chemistry
What volume of a 4.50% v/v solution of ethanol in water can be prepared with 23.9 mL of ethanol
February 23, 2012 by Anonymous

Chemistry
Calculate the volume (L) of the solute C4H8O and the volume (mL) of the solvent C2H5OH that should be combined to prepare 5.54 kg of a solution that is 0.608 m. Molar Mass (g/mol) C4H8O 72.12 C2H5OH 46.07 Density (kg/L): C4H8O 0.8892 C2H5OH 0.7893 Name/Formula: tetrahydrofuran...
February 14, 2010 by Jackie

Chemistry
Calculate the molality of methanol in a solution prepared by dissolving 75.0 mL of methanol, CH3OH (d = 0.791 g/mL), in 150 g of ethanol, C2H5OH.
February 10, 2010 by CC

chemistry
Calculate the volume ( mL ) of the solute C2H5OH and the mass ( g ) of the solvent diethyl ether that should be mixed to produce 3.46 kg of a solution that is 1.31 m C2H5OH. volume ( mL ) of the C2H5OH mass ( g ) of the (C2H5)2O Molar Mass (g/mol) C2H5OH 46.07 (C2H5)2O 74.12 ...
June 3, 2010 by Judy

chem
The equilibrium constant Kc equals 5.90 for the reaction CH3COOH + C2H5OH <==> CH3COOC2H5 + H2O Find the molar concentrations of acetic acid, ethanol, ethyl acetate, and water at equilibrium when .10 M acetic acid and .20 M ethanol are allowed to equilibrate. I started ...
April 16, 2007 by JP

chemistry
Calculate the mass ( g ) of the solute ethanol and the mass ( kg ) of the solvent CHCl3 that should be combined to prepare 9900 g of a solution that is 14.5 m ethanol. extra given info from problem: molar mass (g/mol): C2H5OH 46.07 CHCl3 119.38 density (kg/L): C2H5OH 0.7893 ...
February 25, 2010 by Diem

Chemistry
The density of an aqueous solution containing 10% of ethanol (C2H5OH) by mass is 0.984 g/ml. A) Calculate the molality of this solution. B) Calculate its molarity. C) What volume of the solution would contain 0.125 mol of ethanol.
March 17, 2010 by Hilavidpreet

chemistry
what mass of ethanol(C2H5OH) will be required to prepare a 2.00m solution in 8.00kg of water?
April 16, 2012 by maria

Chemistry
For ethanol, C2H5OH, which is mixed with gasoline to make the fuel gasohol, Hf = -277.63 kJ/mol. Based upon data in Table 6.2, and that the density of ethanol is 0.787 gcm-3, the number of kilojoules released by burning completely 2.40 gallons of ethanol is ? *Table 6.2 ...
October 16, 2011 by A

molal
the freezing point of ethanol (C2H5OH) is -114.6C. the molal freezing point depression constant for ethanol is 2.00C/m. what is the freezing point (C) of a solution prepared by dissolving 50.0 g of glycerin (C3H8O3, A nonelectrolyte) in 200 g of ethanol. i tried to solve it on...
September 16, 2010 by lisa

Chemistry
Ethanol, C2H5OH, is mixed with gasoline and sold as gasohol. Use the following to calculate the grams of ethanol needed to provide 367 kJ of heat. C2H5OH(l) + 3 O2(g) 2 CO2(g) + 3 H2O(g) H = −1235 kJ
November 21, 2011 by Samantha

chemistry
1.) How much ethanol, C2H5OH, in liters (d=0.789g/ml) must be dissolved in water to produce 190.5 of 1.65 M C2H5OH? (Molarity problem.) 2.) How much concentrated hydrochloric acid solution (36.0% HCl by mass, d = 1.18g/mL}), in milliliters, is required to produce 11.0 L of 0....
February 12, 2010 by joe

chem
The molarity and the molality of a solution prepared by dissolving 2.00 g of ethanol C2H5OH with 100.0 g of water to give a final volume 102 mL are would i just add both the grams and divide by 102 for molarity? and molalty i would just add the mass?
August 8, 2008 by so

molal (again)
i tried to solve it on my own but im confused about the last part, this i what i have so far.. moles of glycerin= 50.0/92.10=0.54 molality=0.54/0.200=2.7 is that right? im a little confused about the numbers im supposed to use for step 3... this was the question: the freezing ...
September 15, 2010 by lisa

science(chem)
I'm making different concentrations of ethanol and I just wanted to check my calculations and method. Making ethanol concentrations of: 0.40% 0.30% 0.20% 0.10% 0.05% To make the 0.40% ethanol from stock solution using 100ml volumetric flask: (xg ethanol)/(100ml) x 100= 0.40% ...
October 1, 2008 by ~christina~

Ap chemistry
What is the approximate molar fraction of ethanol c2h5oh in an aqueous solution in which the ethanol concentration is 11.0 molal? A. 0.0011 B. 0.011 C. 0.170 D. 0.200 E. 0.600
May 8, 2013 by Lacey

CHEMISTRY
At 63.5 degreesC, the vapour pressure of H2O is 23.3kPa and that of ethanol is 53.3kPa. A solution is made by mixing egual masses of H2O and C2H5OH. a. what is the mole fraction of ethanol in the solution? b. assuming ideal-solution behaviour, what is the vapour pressure of ...
October 15, 2010 by lulu78

chemistry
You have a solution that contains 340ml of water and 20ml of ethanol. Find the concentration of ethanol in this solution in each of the following units: (density of water is 1.00 g/ml, density of ethanol is 0.789g/ml)
February 18, 2014 by Anonymous

Chemistry
Gasohol is a fuel containing ethanol (C2H5OH) that burns in oxygen (O2) to give CO2 and water. How many moles of O2 are needed to completely react with 2.50 moles of ethanol?
October 25, 2011 by Deborah

Chemistry
Ethanol, C2H5OH or C2H6O, is mixed with gasoline and sold as gasohol. Given the following thermo-chemical reaction, calculate the kilograms (kg) of CO2 produced when enough ethanol is combusted to provide (or give off) 369 kJ of heat: C2H5OH (l) + 3 O2 (g) --> 2 CO2 (g) +3 ...
July 12, 2011 by Robert

chemistry
Calculate the molarity and mole fraction of a 2.35 m solution of acetone (CH3COCH3) dissolved in ethanol (C2H5OH). (Density of acetone = 0.788 g/cm3; density of ethanol = 0.789 g/cm3.) Assume that the final volume equals the sum of the volumes of acetone and ethanol.
May 4, 2010 by bob

Chemistry
A sample of ethanol, C2H5OH, weighing 2.84 g was burned in an excess of oxygen in a bomb calorimeter. The temperature of the calorimeter rose from 25.00C to 33.73C. If the heat capacity of the calorimeter and contents was 9.63 kJ/C, what is the value of q for burning 1.28 ...
June 7, 2011 by Lance

chemistry
a 35.6g sample of ethanol (c2h5oh) is burned a bomb calorimeter, according to the following reaction. If the temperature rose from 35.0 to 76.0c and the heat capacity of the calorimeter is 23.3kj/c what is the value of enthalpyH reaction? the molar mass of ethanol is 46.07g/...
July 27, 2013 by and6260

chemistry
What is the maximum amount of ethanol (in grams) that can be produced when 1.0 kg of ethylene (C2H4) and 0.014 kg of steam are placed into the reaction vessel? Ethanol (C2H5OH) is synthesized for industrial use by the following reaction, carried out at very high pressure. C2H4...
November 1, 2011 by Amanda

Chemistry
Ethanol (C2H5OH) is synthesized for industrial use by the following reaction, carried out at very high pressure. C2H4(g) + H2O(g) C2H5OH(l) What is the maximum amount of ethanol (in grams) that can be produced when 1.0 kg of ethylene (C2H4) and 0.014 kg of steam are placed ...
November 1, 2011 by Jack

Chemistry
Ethanol (C2H5OH) is synthesized for industrial use by the following reaction, carried out at very high pressure. C2H4(g) + H2O(g) → C2H5OH(l) What is the maximum amount, in kg, of ethanol that can be produced when 1.65 kg of ethylene (C2H4) and 0.0610 kg of steam are ...
October 6, 2013 by Brittney

chemistry
Calculate the molarity and mole fraction of acetone in a 1.29 m solution of acetone (CH3COCH3) in ethanol (C2H5OH). (Density of acetone = 0.788 g/cm3; density of ethanol = 0.789 g/cm3.) Assume that the volumes of acetone and ethanol add.
January 20, 2011 by sarah

Chemistry
The unbalanced equation for the combustion of ethanol is as follows: C2H5OH(l) + O2(g) CO2(g) + H2O(g) How much heat, in kJ, is liberated when 4.84 kg of C2H5OH(l) is burned? Species Delta Hf (kJ/mol) H2O(g) -241.8 CO2(g) -393.5 C2H5OH(l) -277.7 Express the answer with ...
October 13, 2010 by Jordin

Chemistry
When doing a simple distillation of ethanol-water, is the vapor pure ethanol or does it also contain water? (knowing that ethanol has lower boiling point than water) If it is not pure ethanol, why is it not possible to separate water & ethanol completely? Thanks in advance.
January 4, 2012 by Namie

NEED HELP WITH CHEM HW
Ethanol (C2H5OH) is synthesized for industrial use by the following reaction, carried out at very high pressure. C2H4(g) + H2O(g) C2H5OH(l) What is the maximum amount of ethanol (in grams) that can be produced when 2.2 kg of ethylene (C2H4) and 0.014 kg of steam are placed ...
October 1, 2011 by Anonymous

chemistry
Ethanol (C2H5OH) melts at -114 C. The enthalpy of fusion is 5.02 kJ/mol. The specific heats of solid and liquid ethanol are 0.97 J/g-K and 2.3 J/g-K, respectively. How much heat (kJ) is needed to convert 25.0 g of solid ethanol at -135 C to liquid ethanol at -50 C?
February 3, 2012 by Anonymous

chemistry
the vapor pressure of ethanol at 20c is 44 mmHg and the vapor pressure of methanol at the same temperature is 94mmHg. A mixture of 30.0 g of methanol and 45.0 g of ethanol is prepared (and can be assumed to behave as an ideal solution). a.) calculate the vapor pressure of ...
January 30, 2012 by cassidy

chemistry
Calculate the molarity of a solution containing 40.0 g glucose (C6H12O6) in enough ethanol (C2H5OH) to make 40.0 mL of solution.
February 10, 2010 by CC

chemistry
In an experiment, ethanol standards and an n-propanol standard were to be prepared in water. The ethanol standards were weight% and the n-propanol could be either v/v or weight%. One of the questions for the report asks why it was ok to make the n-propanol a v/v%. I overheard ...
February 10, 2014 by solution chemistry

apchem
A 15.0g sample of liquid ethanol, C2H5OH, absorbs 5.13x10^3 J of heat at its normal boiling point, 78.0C. The molar enthalpy of vaporization of ethanol is 39.3kJ/mol. (a) What volume of ethanol vapor is produced? The voume is measured at 78.0C and 1.00atm pressure. (b) What ...
January 27, 2008 by alk

Chemistry
A 15.0g sample of liquid ethanol, C2H5OH, absorbs 5.13x10^3 J of heat at its normal boiling point, 78.0C. The molar enthalpy of vaporization of ethanol is 39.3kJ/mol. (a) What volume of ethanol vapor is produced? The voume is measured at 78.0C and 1.00atm pressure. (b) What ...
January 27, 2008 by David

chemistry
Ethanol, C2H5OH, is being promoted as a clean fuel and is used as an additive in many gasoline mixtures. Calculate the ΔHrxn for the combustion of ethanol. ΔHf [C2H5OH(l)] = -277.7 kJ/mol; ΔHf [CO2(g)] = -393.5 kJ/mol; ΔHf [H2O(g)] = -241.8 kJ/mol
March 10, 2013 by Anonymous

chemistry
Please help =) 59. Ethanol, C2H5OH, is responsible for the effects of intoxication felt after drinking alcoholic beverages. When ethanol burns in oxygen, carbon dioxide and water produced. (a) Write a balanced equation for the reaction. [[Think I did this right] Need help with...
October 10, 2008 by shadow55

chemistry
What is the mass/vol % ethanol in an ethanol-water solution with density of 0.875 g/ml and containing 65.0% ethanol by volume? The density of pure ethanol is 0.789 g/ml.
June 27, 2010 by jimbo

chemistry
C2H5OH + 3O2 --> 2CO2 + 3H2O How many grams of O2 are consumed when 5.86 ml of Ethanol burns completely (the density of C2H5OH is 0.789 g/ml)?
February 16, 2012 by Delta

chem- plz check my work
2. Given the following equation, C2H5OH(l) + 3 O2(g)---> 2 CO2(g) + 3 H2O(l) How many liter of CO2 are expected in the combustion of 12.0 grams of ethanol? My work: 12.0g C2H5OH X 1 mol C2H5OH/46.08g C2H5OH X 2 mol CO2/1 molC2H5OH X 22.4L CO2/1 mol CO2 = 11.7 L CO2 all i ...
December 8, 2010 by hannah

Chemistry
What is the molality of an aqueous solution that is 10.0% ethanol, C2H5OH, by mass?
February 10, 2013 by Marcus

chem
C6H12O6(aq)->2 C2H5OH(aq) + 2CO2(g) Fermentation of 744mL grape juice(density=1.0 g/cm^3) is allowed to take place in a bottle witha V of 825mL until 12% by volume is ethanol (C2H5OH). Assuming CO2 is insoluble in H2O what would the pressure be of the CO2 inside the wine ...
November 16, 2007 by mel

CHEMISTRY MOLALITY!!!!!
A bottle of wine contains 13.1% ethanol by volume. The density of ethanol (C2H5OH) is 0.789 g/cm3. Calculate the concentration of ethanol in wine in terms of mass percent and molality. i don't know how to get molality. please help!!!! Molality is the number of moles of solute ...
March 31, 2007 by Anonymous

chemistry
Calculate enthalpy change of reaction for the combustion of gaseous ethanol. C2H5OH + 3O2 >> CO2 + 3H2O. Using standard molar enthalpies of formation. C2H5OH -235.3 ( it's negative sign) CO2 -393.5 H2O -241.8 (1) Calculate the enthalpy change of reaction per mole of ...
April 20, 2010 by Alex

AP Chemistry
A bottle of wine contains 12.5% ethanol by volume. The density of ethanol (C2H5OH) is 0.789 g/cm3. Calculate the concentration of ethanol in wine in terms of mass percent and molality.
November 14, 2010 by Anonymous

Chemistry
A bottle of wine contains 11.4% ethanol by volume. The density of ethanol (C2H5OH) is 0.789 g/cm3. Calculate the concentration of ethanol in wine in terms of mass percent and molality.
September 23, 2012 by Erin

Chemistry
Ethanol (C2H5OH) boils at a temperature of 78.3oC. What amount of energy, in joules, is necessary to heat to boiling and then completely vaporize a 22.8 g sample of ethanol initially at a temperature of 16.5oC. The specific heat of ethanol is approximately constant at 2.44 JK-...
October 6, 2011 by tanner

Chemistry
Ethanol (C2H5OH) boils at a temperature of 78.3oC. What amount of energy, in joules, is necessary to heat to boiling and then completely vaporize a 13.1 g sample of ethanol initially at a temperature of 11.1oC. The specific heat of ethanol is approximately constant at 2.44 JK-...
October 6, 2011 by Carrie

Chemistry
Ethanol (C2H5OH) boils at a temperature of 78.3oC. What amount of energy, in joules, is necessary to heat to boiling and then completely vaporize a 28.6 g sample of ethanol initially at a temperature of 10.8oC. The specific heat of ethanol is approximately constant at 2.44 JK-...
October 7, 2011 by John

Chemistry
The vapor pressures of ethanol (C2H5OH) and 1-propanol (C3H7OH) are 100 mmHg and 37.6 mmHg, respectively. Assume ideal behavior and calculate the partial pressures of ethanol and 1-propanol at 35 degrees Celsius over a solution of ethanol in 1-propanol, in which the mole ...
March 18, 2010 by Arnold

college chem
Ethanol (C2H5OH) boils at a temperature of 78.3oC. What amount of energy, in joules, is necessary to heat to boiling and then completely vaporize a 20.0 g sample of ethanol initially at a temperature of 13.6oC. The specific heat of ethanol is approximately constant at 2.44 JK-...
October 4, 2011 by john

chemistry
Calculate the molarity of a 295 mL solution contain 45 g of ethanol (C2H5OH)
November 27, 2011 by jane

Chemistry
How much heat is required to convert 32.5 grams of ethanol at 28 C to the vapor phase at 78 C? Ethanol (C2H5OH) boils at 75 C. Its density is 0.789 g/mL. The enthalpy of vaporization is 38.56 kJ/mol. The specific heat of liquid ethanol is 2.3 J/g-K.
February 11, 2010 by Anonymous

chem - instrumental analysis
A stock solution of ethanol is made by weighing out the correct amount of absolute ethanol in a tared beaker containing 15 ml of water. Why is it necessary to add water to the beaker before adding the ethanol?
November 25, 2013 by puzzled

Chemistry - enthalpy reivison(help)
58. When a vehicle is parked in the sunlight on a hot summer day, the temperature inside can approach 55C. One company has patented a non-CFC propelled aerosol that can be sprayed inside a vehicle to reduce the temperature to 25C within seconds. The spray contains a mixture ...
March 29, 2011 by Farah

chem
drbob you helped me with this problem the other day but i have a question. -i changed 500mL of ethanol to grams then to mol. i was wondering if i then used 1000mL or 500mL of water to change to kg? The "proof" of an alcoholic beverage is twice the volume percent of ethanol, ...
February 13, 2008 by alicia

Chemistry
Neat pure ethanol C2H5OH has an enthalpy of vaporization of 39.3 Kj/mol, and a vapor pressure of 0.308 atm at 50 C. What is the boiling point, at atmospheric pressure of 1 atm, of a solution consisting of 35 G of phenol (a non-electrolyte hydrocarbon with a molecular formula ...
April 30, 2012 by Mima

Chemistry
A solution is made by mixing 37.0 mL of ethanol, C2H6O, and 63.0 mL of water.? Assuming ideal behavior, what is the vapor pressure of the solution at 20 C? ethanol: 0.789 g/mL 43.9 torr water : 0.998 g/mL 17.5 torr
March 2, 2013 by Dee

chemistry
a mixture is prepared using equal masses of two volatile liquid benzene, C6H6 and ethanol C2H5OH. what is the mole fraction of benzene in this mixture?
October 26, 2008 by tomi

chemistry
HELPPPP!!!! A mixture is prepared using equal masses of the two volatile liquids benzene, C6H6, and ethanol, C2H5OH. What is the mole fraction of benzene in this mixture?
November 7, 2013 by Bobby

chemistry
last check: (c) A wine cooler contains 4.5% ethanol by mass. Assuming that only the alcohol burns in oxygen, how many grams of wine cooler need to be burned to produce 3.12 L of CO2 (d = 1.80 g/L at 25C, 1 atm pressure) at the conditions given the density? 1 C2H5OH + 3 O2 = 2...
October 12, 2008 by starlight

Chemistry
Hydrogren, a possible future fuel, can also be obtained from other compounds such as ethanol. Ethanol can be made from the fermentation of crops, such as corn. How much hydrogen in grams can be obtained from 1.0 kg of ethanol (C2H5OH)?
April 1, 2008 by Kate

chemistry
The fermentation of sugar (C6H12O6) to form ethanol (C2H5OH) and carbon dioxide (CO2) occurs according to the following equation: C6H12O6(aq) 2 C2H5OH(aq) + 2 CO2(g) kJ molC1 Hf (C6H12O6(s)) is C1275 Hf (C2H5OH(l)) is C277 Hbond (C=O) 799 (a) Assuming the heat of ...
November 3, 2010 by mailyn

CHEMISTRY
Dye of iodine is prepared by dissolving in ethanol , and 1% ( one percent ) of this solution contains 10 g of solute in 1000 g of solution 1) how many grams of solvent is there in the solution ? 2) how many moles of solute ( I2) is there? 3) what is the molality of 1% of this ...
July 12, 2014 by MAD

chemistry
Shown below is a schematic representation of the water-ethanol phase diagram. Making reference to the phase diagram, explain in a few sentences how one could enrich a solution of 15 percent ethanol - 85 percent water to a composition of 60 percent ethanol - 40 percent water. ...
December 21, 2012 by C

chemistry
If you have 137.8 mL of a 38.4% aqueous solution of ethanol, what volumes of ethanol and water are in the solution?
November 4, 2010 by MaryBeth

chemistry
If you have 137.8 mL of a 38.4% aqueous solution of ethanol, what volumes of ethanol and water are in the solution?
November 4, 2010 by MaryB

Chemistry
If you have 200ml of 25% aqueous solution of ethanol, what volume of ethanol and water are in the solution?
March 3, 2013 by JD

Chemistry: Dr. Bob, can you check my work?
In the "Methode Champenoise," grape juice is fermented in a wine bottle to produce sparkling wine. The reaction is given below. C6H12O6(aq) 2 C2H5OH(aq) + 2 CO2(g) Fermentation of 712 mL grape juice (density = 1.0 g/cm3) is allowed to take place in a bottle with a total volume...
November 15, 2012 by Zachary

Water solubility chemistry
What solvent that would dissolve Ethanol in water? You mean selectively dissolve the ethanol out of the water? Ethanol is soluble in water, at least last night when I had wine, it was dissolved. I dont know of anything that selectively absorbes ethanol when dissolved in water.
March 25, 2007 by Hasina

chemistry - heat absorption (help)
When a vehicle is parked in the sunlight on a hot summer day, the temperature inside can approach 55C. One company has patented a non-CFC propelled aerosol that can be sprayed inside a vehicle to reduce the temperature to 25C within seconds. The spray contains a mixture of ...
April 1, 2011 by Farah

Chemistry
Ethanol is a fuel that can be made from corn. How many kJ of heat energy are released when 3.00 kg of ethanol are burned? C2H5OH(l) + 3O2(g) 2CO2(g) + 3H2O(g) H = -1406.8 kJ/mol
April 17, 2010 by Marcus

Chemistry
Ethanol, C2H5OH, MW = 46.1 g/mole, is a popular alternative to hydrocarbon fuels. Calculate the grams of ethanol that must be burned to provide 4082 kJ of heat.
November 2, 2011 by Anonymous

Chemistry. HELP.
You react 25.0 liters of oxygen gas at STP with 50.0 ml of ethanol liquid. Ethanol has a density of 0.789 g/ml. The excess reactant is: -C2H5OH -O2 -CO2 -H2O -C -H2 -CO
June 2, 2014 by Hilary Marie

Chemistry
Ethanol, C2H5OH is mixed with gasoline and sold as gasohol. Use the following to calculate the grams of ehanol needed to provide 293 kJ of heat. C2H5OH + 3O2 ----> 2CO2 + 3H2O Delta H = -1235 kJ How do I do this question
November 1, 2007 by Lauren

Chemistry
What is the mass/ vol% ethanol in an ethanol water solution with density of 0.875g/ml and containing 65% ethanol by volume? The density of pure ethanol is 0.789g/ml? My calculation 0.875g/ml x 1000ml x 0.65/ 46.06 = 12.34m 12.34/0.789g = 15.6g I am not sure answer. Pls help
August 18, 2012 by Fai

Chemistry
Ethanol (C2H5OH) melts at -114 degrees Celsius. The enthalpy of fusion is 5.02 kj/mol. The specific heats of solid and liquid ethanol are 0.97 J/g-K, respectively. How much heat (kJ) is needed to convert 25.0 g of solid ethanol at -135 degrees Celsius to liquid ethanol at -50 ...
May 4, 2014 by Kylie

Chemistry
A mixture is prepared using equal masses of two volatile liquid benzene, C6H6, and ethanol, C2H5OH. what is the mole fraction of benzene in this mixture? for my answer I got 0.370 C6H6. please help!
November 3, 2013 by Temmick

Chemistry
Ethanol will combust according to the following equation: C2H5OH(l)+3O2(g)->2CO2(g)+3H2O(l) How many liters of air are required to combust 120.1 g of ethanol at 26.4C and 789.5 mmHg. Assume air is 21% O2 by volume. I cannot find my error - professor states answer as 882.6...
April 17, 2014 by Joe

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