Chemistry
posted by Robert .
Calculate the enthalpy change when 100. g of ice at 0.0 °C is heated to liquid water at 50.0°C. (The heat of fusion for water is 333 J/g.)
1)54.2 kJ
2)33.3 kJ
3)54,220 kJ
4)20.9 kJ

1)54.2 kJ
2)33.3 kJ
3)54,220 kJ
4)20.9 kJ
Those are possible answers... Which is it? 
q1 = heat to melt the ice.
q1 = mass of ice x heat of fusion.
q2 = heat to raise the temperature from 0 degrees C to 50 degrees C.
q2 = mass of water x specific heat water x (Tf  Ti)
Tf is final Temperature.
Ti is initial T.
Total heat = q1 + q2.
Post your work if you get stuck. 
Never mind, I got it:
100 grams of ice times 333 J/g = 33.3 kJ of heat to melt all the ice.
Next, raising temperature of liquid, so 100 g *4.184 J/g *50= 20.92 kJ
Thus A is best answer 
right. In fact, I obtained 54.2 kJ.
Respond to this Question
Similar Questions

chemistry
Calculate the enthalpy change when 50. g of ice at 30.0 °C is heated to completely melt to liquid water at 0.0°C. (The heat of fusion for water is 333 J/g.) 
Chemistry
How much heat is released when 75.0 g of steam at 100.0°C is cooled to ice at 15.0°C? 
chemistry
Which of the following constants are needed to calculate the change in enthalpy (H) for heating a sample of liquid water at 10C to steam at 150C. I) the heat capacity of water II) the enthalpy of fusion of water III) the heat capacity … 
chemistry
the enthalpy of fusion of ice is 6.02 kJ/mol. the heat capacity of liquid water is 75.4 J/molC. What is the smallest number of ice cubes at 0 degrees C each containing one mole of water, necessary to cool 500g of liquid water initially … 
chemistry
Calculate the energy in the form of heat, in kJ, required to convert 225 grams of liquid water at 21.0 °C to steam at 115 °C. Heat of fusion = 0.333 kJ/g; heat of vaporization = 2.26 kJ/g; specific heat capacities: liquid water = … 
Chemistry HEAT OF FUSION
What is the final temperature, in oC, after a 15.0 g piece of ice, at 0oC, is placed in a styrofoam cup with 128 g of water initially at 74.0oC. Assume there is no transfer of heat to or from the surroundings. The specific heat of … 
Chemistry
Calculate the enthalpy change when 45 g of ice at 40.0 oC is heated to completely melt to liquid water at 0.0oC. (The heat of fusion for water is 333 J/g.) 
chemistry
when one gram of water solidifies to ice 333.33 j of heat is evolved. calculate enthalpy of fusion of ice? 
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 … 
chem
Calculate the enthalpy change for the conversion of 36.04 g of ice at 23.0 °C to water at 75.0 °C under a constant pressure of 1 atm. The specific heats of ice and water are 2.09 J/(°C . g ) and 4.18 J/(°C . g ) respectively. …