chemistry

posted by .

Tungsten has been used to make light bulb filaments since 1908. The melting point of tungsten is 3422 °C and the heat of fusion is 35 kJ/mole. Calculate the entropy change associated with the melting of one mole of tungsten.

  • chemistry -

    4.3 mol of tungsten to atoms

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Entropy

    Tungsten has been used to make light bulb filaments since 1908. The melting point of tungsten is 3422C and the heat of fusion is 35 kJ/mole. Calculate the entropy change associated with the melting of one mole of tungsten.
  2. chemistry

    The diameter of the tungsten wire in a light bulb filament is bery small, less than two thousandths of an inch, or about 1/20 mm. THe mass of the filament is so very small - 0.0176 grams - that it would take 1,600 filaments to weigh …
  3. physics

    Entropy of melting A block of a certain substance (m = 0.3 kg) sits in a cold room at its melting point 170 K. A lab demonstrator supplies heat at a rate of 200 W for 140 seconds by focusing light on the block to (just) completely …
  4. science!!

    The element in an incandescent light bulb that releases light energy is _____. I think its C a thin tungsten filament. Am i right?
  5. chemistry

    Tungsten is a dense metal that is used to make the filaments in incandescent light bulbs. A piece of tungsten has a volume of 5.2 cubic centimeters and a mass of 100 grams. What is the density of tungsten?
  6. physics

    The filament in an incandescent light bulb is made from tungsten. The light bulb is plugged into a 240 V outlet and draws a current of 1.16 A. If the radius of the tungsten wire is 0.0052 mm, how long must the wire be?
  7. Science

    Study the data table below. A three-column table presenting the 'Melting Point and Boiling Point for Common Substances.' The column headers are 'Substance,' 'Melting point (°C),' and 'Boiling point (°C).' For substance aluminum, …
  8. Chemistry

    GE's light bulb division ordered 100.kg of tungsten for the filaments. If the tungsten comes in a cube what is the volume of the cube?
  9. Chemistry

    A substance has the following properties: Heat capacities: 1.34 J/g oC (solid) 3.02 J/g oC (liquid) 2.55 J/g oC (gas) Heat of Fusion = 4.23 kJ/mole Heat of Vaporization = 23.5 kJ/mole Boiling Point = 88.5 oC Melting Point = -30.0 oC …
  10. college chemistry

    at its melting point, O c, the enthalpy of fusion of water is 1.435 kcal/mol. what is the molar entropy change for the melting ice at 0C?

More Similar Questions