chemistry

posted by .

1. Given that 50 grams of ice is heated at -20.0 °C to steam at 135.0 °C.
i. Show the graph of the changes from ice to steam
ii. Calculate the energy needed to change the ice to steam
Please use these values:
Heat of fusion = 334.16 J g¯1
Heat of vaporization = 2259 J g¯1
specific heat capacity for solid water (ice) = 2.06 J g¯1 K¯1
specific heat capacity for liquid water = 4.184 J g¯1 K¯1
specific heat capacity for gaseous water (steam) = 2.02 J g¯1K¯1

  • chemistry -

    q1 = heat needed to raise T ice froom -20 to zero C.
    q1 = mass ice x specific heat ice x (Tfinal-Tinitial)

    q2 = heat needed to melt ice @ zero C to liquid water @ zero C.
    q2 = mass ice x heat fusion ice.

    q3 = heat needed to raise T water at zero to 100 C.
    q3 = mass water x specific heat H2O x (Tfinal-Tinitial)

    q4 = heat needed to convert water @ 100 C to steam at 100 C.
    q4 = mass water x heat vaporization

    q5 = heat needed to raise T of steam at 100 to steam at 135.
    q5 = mass steam x specific heat steam x (Tfinal-Tinitial)

    Total q = q1 + q2 + q3 + q4 + q5

  • chemistry -

    33kj

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    how much heat (in KJ) is evolved in coverting 1.00 mol of steam at 135.0 degrees celcius to ice at -45.0 degrees celcius?
  2. Chemistry

    Calculate the amount of energy in kilojoules needed to change 225 g of water ice at -10 C to steam at 125 C. The following constants may be useful: Cm(ice)=36.57 J/(mol*C) Cm(water)=75.40 J/(mol*C) Cm(steam)=36.04 J/(mol*C) Delta H(fus)=+6.01 …
  3. chemistry

    How much heat in kilojoules is evolved in converting 1.00 mol of steam at 145 Celsius to ice at -50 Celsius?
  4. Chemistry

    How much energy does it take to convert 0.800 kg ice at -20.°C to steam at 250.°C?
  5. Chemistry

    Given that the specific heat capacities of ice and steam are 2.06 J/g degrees C and 2.03 J/g degrees C, respectively, calculate the total quantity of heat evolved when 10.0 g of steam at 200 degrees C is condensed, cooled, and frozen …
  6. Chemistry

    calculate the total amount of heat needed to change 500g of ice at -10*C into 500g of steam at 120*C. do this by calculating the ehat required for each of the following steps and adding to get the total: step 1. ice (-10C)-> ice …
  7. Science

    Ten grams of ice are heated in a closed container until it turns to steam. What is the mass of the steam?
  8. Chemistry

    48g of ice at its melting point is heated with steam at its condensation point. The final temperature of the system is 50 degree Celsius. How much steam was used to melt the ice?
  9. chemistry

    What is the energy released when steam at 25 g of steam at 10 degree celcius is cooled to ice at-10 degree celcius work heat change for the following changes calculated 150 degree Celsius steam --150 degree water 150 degree water to …
  10. chemistry

    1. Given that 50 grams of ice is heated at -20.0 °C to steam at 135.0 °C. i. Show the graph of the changes from ice to steam ii. Calculate the energy needed to change the ice to steam Please use these values: Heat of fusion = 334.16 …

More Similar Questions