Question

1.	Russell Biven decides to make some iced tea. He starts with 6 liters of water at 25°C. Assume that the properties (heat coefficients, density, etc) for iced tea are the same as for water. Example 1 Example 2

Part	Description	Answer	Chk	History
A.	Russell starts by bringing the 6 liters of water to a boil. How much heat is needed to be added to bring the water to a boil? (include units with answer)	A: 450000cal C: 1884 kJ	Hints: 1,0	# tries: 2
B.	Russell gets distracted watching Ken Schwall and lets the pot continue to boil, allowing 1030 kJ of heat to be added to the boiling water. What percentage of the water boils away? (%) Hint #1: Use latent heat of vaporization		7.14 pts.100% 2% try penalty Hints: 1,0	# tries: 0
C.	Russell takes the pot off the stove and adds the tea bags and 0.3 liters of tap water at 30°C to the pot. What is the equilibrium temperature? (°C) Hint #1: Remember to subtract the mass that was boiled away.		7.14 pts.100% 2% try penalty Hints: 1,0	# tries: 0
D.	Russell likes his tea at 4°C. How much ice at -11°Cdoes Russell need to add to bring the tea to 4°C? (include units with answer) Hint #1: You should have 4 terms (Q's) before simplifying	Format Check	7.14 pts.100% 2% try penalty Hints: 1,0	# tries: 0
E.	What is the final volume of iced tea that Russell ends up with? (include units with answe

Answer 1

e heal Ca capauly 6 x 4-1863 ( )00-25) 6x looox 75 =1150000 cal . B. Latut hest el vaponisation, et loa, 2260 kJ/kg m) L =イレ x 2260 = 030 5.54 x 4.)86x (100-T) 0.3x4.186x (T-30) -046 T= 96,4 °C( Ans. Heat lock by LOate = Heat gainedby. Ke 34 2253-8-23-2mナ33Yrn+16-7 m E- Final volume etice 5.84十 bib = 12-yy litus Anu