posted by .

making ice cream involves surrounding the ice cream canister with a bath of salt ice water. to get the mix of freeze at 7.00 C,how many grams of salt (NaCl;molar mass = 58) will you need to add to 3.5 kg of ice water bath? (Kf of water = 1.86C/m)

  • chemistry -

    delta T = i*Kf*molality
    You know delta T, i=2 (2 particles for NaCl), you know Kf, solve for molality.
    Then molality = moles/kg solvent
    Solve for moles.
    Then moles = grams/molar mass.'
    Solve for grams Nacl.

  • chemistry apex -

    374 - 375 grams

  • chemistry -


Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra 2

    an ice cream store has 31 flavors of ice cream and 10 toppings. A regular sundae has one flavor of ice cream, one topping, and comes with or without whipped cream. How many different ice cream sundaes can be ordered?
  2. science

    Why do u think the vial of water in plain ice didn't freeze, bu the vial of water in salted ice did freeze?
  3. Chemistry

    A rock salt NaCl ice and water mixture is used to cool milk and cream to make homemade ice cream. How many grams of rock salt must be added to water to lower the freezing point 10.0C?
  4. science

    which of the following is the best reason salt is sometimes spread on icy highways?
  5. Economics

    For each pair of commodities, state which you think is the more price-elastic and gave your reasons: perfume and salt; penicillin and ice cream; automobiles and automobile tires; ice cream and chocolate ice cream.
  6. Chemistry

    1) For a freezing point depression experiment we had to create an ice bath and add salt to the ice. I have to answer the question, why was salting the ice necessary in order to complete the experiment and how does this apply to the …
  7. Chemistry

    Okay so in our class we did an ice cream lab where we use Ziploc bags to make ice cream. We made an ice cream mixture and then put it into a smaller Ziploc bag. Then we got a large Ziploc bag and placed ice in it and placed the bag …
  8. Chemistry

    a student puts 1.25 kg of ice in an ice cream maker with 350 g of rock salt. All the ice eventually becomes liquid water as the rock salt dissolves. Solve for the molality of the solution, then for its new freezing temperature.
  9. Chemistry

    What mass of salt(NaCl)should you add to 1.20 L of water in an ice cream maker to make a solution that freezes at -10.4∘C?
  10. Chemistry

    What mass of salt(NaCl)should you add to 1.20 L of water in an ice cream maker to make a solution that freezes at -10.4∘C?

More Similar Questions