When 100 g of a liquid A at is added to 50 g of a liquid B at temperature

PHYSICS · Single correct · AP · Physics 2: Algebra-based · Thermodynamics · Thermodynamics

Problem

When 100 g of a liquid A at

100^\circ\text{C}

is added to 50 g of a liquid B at temperature

75^\circ\text{C}

, the temperature of the mixture becomes

90^\circ\text{C}

. The temperature of the mixture, if 100 g of liquid A at

100^\circ\text{C}

is added to 50 g of liquid B at

50^\circ\text{C}

, will be : (1)

85^\circ\text{C}

(2)

60^\circ\text{C}

(3)

80^\circ\text{C}

(4)

70^\circ\text{C}