Test 1, Q7

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Melissa Per 2J
Posts: 32
Joined: Fri Sep 29, 2017 7:04 am

Test 1, Q7

Postby Melissa Per 2J » Sat Mar 17, 2018 1:44 pm

In order to make iced tea, a 50.0 g ice cube at 0.0 degrees C is added to 250 mL of tea at 20.0 degrees C. What is the final temp of the iced tea once it has reached thermal equilibrium? Assume that no hear is transferred to or from the surroundings. The density of water (and iced tea) is 1.00 g/mL over the range 0-20 degrees C.

Jessica Jones 2B
Posts: 80
Joined: Fri Sep 29, 2017 7:04 am

Re: Test 1, Q7

Postby Jessica Jones 2B » Sat Mar 17, 2018 1:58 pm

you'll want to do qice=-qtea so it would be n*deltaHfus + mCdeltaT = -(mCdeltaT) and substitute in variables to solve for unknown

Jessica Jones 2B
Posts: 80
Joined: Fri Sep 29, 2017 7:04 am

Re: Test 1, Q7

Postby Jessica Jones 2B » Sat Mar 17, 2018 1:59 pm

and for the mass of the water it will be 1g based on the fact that density= 1g/ml

Melissa Per 2J
Posts: 32
Joined: Fri Sep 29, 2017 7:04 am

Re: Test 1, Q7

Postby Melissa Per 2J » Sat Mar 17, 2018 2:25 pm

Was the answer 18.06 degrees C? Thank you so much!!


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