A person makes ice tea by adding ice to 1.8 kg of hot tea, initially at 80°C
How many kilograms of ice, initially at 0.00°C, are required to bring the mixture to 10°C? The heat of fusion of ice is 334 kJ/kg, and we can assume that tea has essentially the same thermal properties as water, so its specific heat is 4190 J/(kg?K).
A) 1.0 kg
B) 1.2 kg
C) 1.4 kg
D) 1.5 kg
E) 1.7 kg
C
You might also like to view...
A 15-?F capacitor is connected to a 50-V battery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills the space between the plates is inserted
The dielectric has a dielectric constant of 5.0. (a) What is the capacitance of the capacitor after the slab is inserted? (b) What is the voltage across the capacitor's plates after the slab is inserted?
A hockey puck traveling at speed v on essentially frictionless ice collides elastically with one end of a straight stick lying flat on the ice. In this collision
a. momentum is conserved. b. angular momentum is conserved. c. energy is conserved. d. all of the above are conserved. e. only momentum and angular momentum are conserved.
__________is one of the small bodies that formed from the solar nebula and eventually grew into protoplanets
A) A planetesimal B) The Oort cloud C) The Orion nebula D) A carbonaceous chondrite
A nucleus of carbon 14 has 6 protons and 8 neutrons. The atomic number and mass number of carbon 14 are, respectively,
A) 6 and 8 B) 6 and 14 C) 8 and 14 D) 14 and 20 E) 14 and 22