The internal energy change (in J) when 90 g of water undergoes complete evaporation at is .

(Given: for water at , )

Question

The internal energy change (in J) when 90 g of water undergoes complete evaporation at  is .

(Given:  for water at , )

Canvas Classes · Accepted Answer

Strategy:
 Internal energy change for vaporization is calculated using . Ensure all units are in Joules.

Step 1: Find moles of water
.

Step 2: Calculate 
.

.

More questions from Thermodynamics