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11-01-2019
Chemistry

contestada

How much energy is added to change 180g of liquid water to gas at 100 degrees Celsius

Respuesta :

11-01-2019

Answer:

40.7 kJ

Step-by-step explanation:

The formula for the heat, q, needed to evaporate a liquid is

q = mΔHvap

Data:

m = 180 g

ΔHvap = 2260 J/g

Calculation:

q = 180 g × 2260 /1

q = 40 700 J = 40.7 kJ

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