What is the heat capacity of 185 g of liquid water?

(a) What is the specific heat of liquid water?

(b) What is the molar heat capacity of liquid water?

(c) What is the heat ca- pacity of 185 g of liquid water?

(d) How many kJ of heat are needed to raise the temperature of 10.00 kg of liquid water from 24.6 to 46.2 °C?

1 Answer

  • (a)

    4.184 J/g·°C

    (b)

    (4.184 J/g·°C) x (18.01532 g H2O/mol) = 75.38 J/mol·°C

    (c)

    (4.184 J/g·°C) x (185 g) = 774 J/°C

    (d)

    (10.00 x 10^3 g) x (4.184 J/g·°C) x (46.2 - 24.6)°C = 903744 J = 903.7 kJ

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