Some physical properties of water are shown below. melting point boiling point s

Question

Some physical properties of water are shown below. melting point boiling point specific heat solid 2.053/g·°C specfic heat liquid 4.184 1/g.oC specific heat gas 2.02 J/g·°C 0.0°C 100.0°C 6.02 kJ/mol 40.7 kJ/mol 6.01 kJ of heat are added to 27.4 g of ice at -3.4°C. Ho fusion Ho vaporization (a) What will be the final temperature of the system? and what mass will be in each phase after the heating? (b) What mass will be in each phase after the heating? Enter zero for any physical state that is not present. g (solid) 9 (liquid) 0 g (gas)

Explanation / Answer

to raise the temp of ice to 0 deg,

Q = m C deltaT

Q = (27.4) (2.05) (0 - (-3.4))

Q = 191 J  

heat remaining to change the state,

Q = (6.01 x 10^3)- 191 = 5819 J

Q = m Lf

5819 = (m) (334)

m = 17.4 g

(B) Solid = 27.4 - 17.4 = 10 g

liquid = 17.4 g  

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