Post a New Question

chemistry

posted by .

the heat of fusion for thallium is 21 J/g, and its heat of vaporization is 795 J/g. Thallium's melting point is 304 degrees celsius, and its boiling point is 1457 degrees celsius. The specific heat of liquid thallium is 0.13 J/g degrees celsius. How much heat is needed to change 236 g of solid thallium at 304 degrees celsius to vapor at 1457 degrees celsius and 1 atm?

  • chemistry -

    q1 = heat to melt Tl at 306 C.
    q1 = mass x heat fusion.

    q2 = heat to move Tl from 306 C to 1457 C.
    q2 = mass x specific heat liquid Tl x delta T.

    q3 = heat to vaporize Tl
    q3 = mass x heat vaporization.

    Total Q = q1 + q2 + q3.

  • chemistry -

    12

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    lead is a soft, dense metal with a specific heat of 0.028 kcal/kg degrees C, a melting point of 328.0 degrees C and a heat of fusion of 5.5 kcal/kg. How much heat must be provided to melt a 250.0 kg sample of lead with a temperature …
  2. chemistry

    How much heat is required to vaporize 3.50L of at its normal boiling point?
  3. chemistry

    How much heat is required to vaporize 3.50L of at its normal boiling point?
  4. Chemistry

    Chlorofluocarbon was once used in air conditiones as the heat transfer liquid its normal boiling point is -30 degrees C and its enthalpy of vaporization is 16J/g. The gas and the liquid have specific heat capacities of 0.61 J/g8C and …
  5. Physics

    How much heat is required to melt 50 g of mercury at -45 degrees celsius to 425 degrees celsius. (melting point=-38.degree-c, specific heat=0.03325 cal/g-degree c for solid mercury, .2988 cal/g-c degree c for liquid mercury and .2486 …
  6. Physics

    How much heat is required to melt 50 g of mercury at -45 degrees celsius to 425 degrees celsius. (melting point=-38.degree-c, specific heat=0.03325 cal/g-degree c for solid mercury, .2988 cal/g-c degree c for liquid mercury and .2486 …
  7. Physics

    How much heat is required to melt 50 g of mercury at -45 degrees celsius to 425 degrees celsius. (melting point=-38.degree-c, specific heat=0.03325 cal/g-degree c for solid mercury, .2988 cal/g-c degree c for liquid mercury and .2486 …
  8. Chemistry

    CFCs, or chlorofluorocarbons,were once used as refrigerants, but were banned due to their role in the depletion of ozone in our upper atmosphere. The evaporation of CFCs can be used to drive the freezing of liquid water. Given the …
  9. Chemistry

    The specific heat of solid silver is 0.237 J/g degrees celsius and the heat of fusion of silver at its melting point of 961 degrees celsius is 11 J/g. Find the final temperature is 1490 J is used to heat 40 g of silver initially at …
  10. chemistry

    Initially you have 204 g grams of solid thallium at is at its melting point of 304ºC . How many grams of liquid thallium will be present after 476 joules of heat have been added. specific heat liquid thallium is 0.13j/g ºC; heat …

More Similar Questions

Post a New Question