Chemistry

A 50/50 blend of engine coolant and water (by volume) is usually used in an automobile\'s engine cooling system. If your car\'s cooling system holds 4.90 gallons, what is the boiling point of the solution? Make the following assumptions in your calculation; at normal filling conditions, the densities of engine coolant and water are 1.11 g/mL and 0.998 g/mL respectively. Assume that the engine coolant is pure ethylene glycol (HOCH2CH2OH), which is non-ionizing and non-volatile, and that the pressure remains constant at 1.00 atm.

  1. 👍 0
  2. 👎 0
  3. 👁 728
  1. Convert 4.90 gallons to liters.
    1/2 of that will be glycol; 1/2 will be water.
    Using density, convert L H2O to grams and L glycol to grams.

    Convert grams glycol to moles. moles = grams/molar mass

    Convert moles glycol to molality. m = moles/kg solvent

    Then delta T= Kb*m
    Solve for delta T and add to 100 C to find the new boiling point.

    1. 👍 1
    2. 👎 0
  2. 34

    1. 👍 0
    2. 👎 2
    posted by shsn

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chem 2

    A 50/50 blend of engine coolant and water (by volume) is usually used in an automobile\'s engine cooling system. If your car\'s cooling system holds 4.00 gallons, what is the boiling point of the solution? Make the following

    asked by Paulie on July 14, 2012
  2. chemistry

    A 50/50 blend of engine coolant and water (by volume) is usually used in an automobile\'s engine cooling system. If your car\'s cooling system holds 4.20 gallons, what is the boiling point of the solution? Make the following

    asked by Morgan Parker on March 2, 2013
  3. Chem

    A 2.8L engine in a vehicle with air conditioning uses 26.5L of coolant. If the coolant has density of 1.11g/ml, what mass does the coolant add to the vehicle ?

    asked by Ken on September 2, 2014
  4. chemistry (please help)

    A 2.8-L engine in a vehicle with air-conditioning uses 26.5-L of coolant. If the coolant has a density of 1.11 g/ml, what mass does the coolant add to the vehicle?

    asked by Maddie on September 6, 2011
  5. Chemistry

    4. A typical car engine produces 44,000 kJ of heat in an hour. The cooling system has a capacity of 8.40 L and is filled with a 50:50 mixture of anti-freeze (specific heat capacity of 8.37 J/g-oC, density of 1.038 g/mL). In

    asked by Thomas on April 18, 2015
  1. physics

    WHAT CONDITIONS ARE NECESSARY FOR A HEAT ENGINE TO HAVE AN EFFICIENCY OF 1.0? AND HOW DO THE TEMP OF COMBUSTION AND THE TEMP. OF COOLANT AND EXHAUST AFFECT THE EFFICIENCY OF AUTOMOBILE ENGIES?

    asked by ricki on March 2, 2011
  2. English

    1. If you blend red and blue, you get purple. 2. Oil won't blend with water. 3. If you blend red with blue, you get purple. =================== Can we use 'mix' instead of 'blend' in each sentence? Are bothe the same in meaning?

    asked by rfvv on February 1, 2016
  3. Science

    Why do the coolant in a car's radiator protects the engine from damage?

    asked by Nadine on January 29, 2008
  4. physics

    When water freezes, it expands about 8.60%. What would be the pressure increase inside your automobile engine block if the water in it froze? The bulk modulus of ice is 2.00 * 10^9 N/m2.

    asked by Anonymous on January 31, 2013
  5. Physics

    The electric starter in an automobile equipped with a 12 V battery draws a current of 100.00 A when in operation. Suppose it takes the motor 4.00 s to start the engine. What amount of electric energy has been withdrawn from the

    asked by Ashton on September 14, 2014

More Similar Questions