Problem: How many of the following processes require energy (absorbs heat)? Phase transition from solid to gas Freezing Increasing the temperature of water from 20 °C to 30 °C at 1 atm Melting ice A) 0                   B) 1                C) 2                  D) 3                 E) 4

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Problem Details

How many of the following processes require energy (absorbs heat)?

  1. Phase transition from solid to gas
  2. Freezing
  3. Increasing the temperature of water from 20 °C to 30 °C at 1 atm
  4. Melting ice

A) 0                  

B) 1               

C) 2                 

D) 3                

E) 4

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