Calculate the enthalpy change, Delta H, for the process in which 44.0 g of water is converted from liquid at 0.5 °C to vapor at 25.0 °C. For water, Delta Hvap = 44.0 kJ/mol at 25.0 °C and C; = 4.18 J/(g."
• °C) for H2O(1)

Express your answer to three significant figures and include the appropriate units.

How many grams of ice at -15.5 degrees C can be completely converted to liquid at 16.4 degrees C if the available heat for this process is 5.26 x 10 ^ 3 kJ?

For ice, use specific heat of 2.01 j/(g x degrees C) and delta Hfus = 6.01kJ/mol

Use a magnet to separate iron, evaporate water, i'm not sure how to separate the other two i'm sorry but good luck

Vander waals forces are inter molecular bonds that exist within molecules of the same substance. a water molecule is made up of oxygen and hydrogen atoms which share electrons between each other. the vander waals forces are forces that exist between multitude of different  molecules of water. dipole dipole forces is the type of vander waals force that exist in water. the oxygen atom which is more electronegative pulls the shared electron closer to itself thus generating a partial negative charge while the hydrogen acquire a partial positive charge. these two different charges causes attraction to occur in water molecules.

The answer is 3.