Calorimetry A thirsty nurse cools a 2.40 L

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In summary, a nurse cools a 2.40 L bottle of soft drink by pouring it into a large aluminum mug filled with 0.123 kg of ice at -15.5 degrees Celsius. The initial temperatures of the soft drink and mug are 20.2 degrees Celsius. Using the equations Q=Mc(change in T), Q=ML, and Q1+Q2+Q3+Q4+Q5=0, the final temperature of the system is determined to be 15.1 degrees Celsius, assuming no heat losses.
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orangem
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Homework Statement



A thirsty nurse cools a 2.40 L bottle of a soft drink (mostly water) by pouring it into a large aluminum mug of mass 0.250 kg and adding 0.123 kg of ice initially at -15.5 degree celsius . If the soft drink and mug are initially at 20.2 degree celsius, what is the final temperature of the system, assuming no heat losses?

Homework Equations



Q1+Q2+Q3+Q4+Q5=0
Q=Mc(change in T)
Q=ML
C ice= 2010 (given)
C water = 4190 (given)
C Al= 904
L = 3.34*10^5 (given)
M drink = Density *Volume = (1000)(.0024)=2.4

The Attempt at a Solution



Q1=M ice (C ice) (Temp) = .123(2010)(0--15.5) = 3832
Q2=M ice (L) = .123 (3.34*10^5) = 41082
Q3=M ice (C water) (Temp) = .123 (4190)(T-0) = 515.4 (T)
Q4=M drink (C water) (Temp) = 2.4 (4190) (T-20.2) = 10056 (T-20.2)
Q5=M Al (C Al) (Temp) = .25(904)(T-20.2) = 226 (T-20.2)

(3832)+(41082)+515.4 (T) + 10056 (T-20.2) + 226 (T-20.2) = 0

I keep getting the wrong answer. I think I am missing a Q or misinterpreting one of them
 
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  • #2


never mind I was right 15.1 is the final temp
 

1. What is calorimetry?

Calorimetry is the scientific technique used to measure the heat of a chemical reaction or physical process. It involves using a calorimeter, which is a device that measures the change in heat of a system.

2. What is a calorimeter?

A calorimeter is a device used to measure the change in heat of a system. It typically consists of a container, a thermometer, and a stirrer, and is used to determine the heat released or absorbed during a chemical reaction or physical process.

3. How does calorimetry work?

Calorimetry works by measuring the change in temperature of a system before and after a chemical reaction or physical process. The heat absorbed or released in the reaction causes a change in temperature, which is then used to calculate the heat of the reaction.

4. How can calorimetry be used in everyday life?

Calorimetry has many practical applications in everyday life. It is used in the food industry to determine the calorie content of food products. It is also used in medicine to measure the energy expenditure of individuals and in environmental studies to analyze the heat flux of the Earth.

5. What are the limitations of calorimetry?

One limitation of calorimetry is that it assumes that all of the heat released or absorbed during a reaction is transferred to the surrounding environment. In reality, some heat may be lost to the surroundings, leading to inaccurate measurements. Additionally, some chemical reactions may be too fast or too slow to be accurately measured by calorimetry.

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