Chemistry

posted by .

When salt is spread on snow covered roads at -2 deg C, the snow melts. When the same amount of salt is spread on snow covered roads at -30 deg C, nothing happens. Explain.

  • Chemistry -

    I think this is a poor question because it doesn't differentiate between the "same" amount and what might be considered a "normal" amount. At any rate, a minimum amount of salt lowers the freezing point of the -2 degrees snow to a temperature less than -2; therefore, it melts. When the same amount is placed on the -30 degrees snow, it lowers the melting point to say -3 or so but not below -30; therefore, it doesn't melt.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chem

    When salt is spread on a snow-covered road at -2C, the snow melts. Though when the same amount of salt is spread on the snow covered road at -30C, nothing happens. Explain?
  2. science

    which of the following is the best reason salt is sometimes spread on icy highways?
  3. chemistry

    Which of the following is an example of a change of state?
  4. chemistry

    salt spread on icy roads because
  5. english

    “In the snow” is repeated three times in “Scott’s Goodbye.” What meaning might the writer have hoped to convey by repeating this phrase?
  6. chemistry

    The letters CHEMISTRY were spray painted in blue paint on the snow. After a while the sun comes out and the snow under the blue paint melts while the snow around the letters do not. Why did the snow under (rather than around) the blue …
  7. English 2b

    Read the paragraph. The snow began falling early in the morning. Tiny, weightless crystals. By early afternoon, the ground was covered with several inches of snow. Snow flurries continued throughout the day. When the evening came, …
  8. L.A.

    which statement best summarizes chapter 11, the Giver 1. Jonas and the Receiver read about snow and other types of weather not found in the community. 2. Jonas experiences tiny pinpricks of snow that touch his body and melt on his …
  9. HELP ITS LA

    which statement best summarizes chapter 11, the Giver 1. Jonas and the Receiver read about snow and other types of weather not found in the community. 2. Jonas experiences tiny pinpricks of snow that touch his body and melt on his …
  10. L.A PLEASE HELP

    which statement best summarizes chapter 11, the Giver 1. Jonas and the Receiver read about snow and other types of weather not found in the community. 2. Jonas experiences tiny pinpricks of snow that touch his body and melt on his …

More Similar Questions