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{11.12}Steam at 100 degree C is added to ice at 0 degree C. The mass of the steam is 10.0kg and the mass of the ice is 50.0g. What is the final temperature of the mixture?The exhaust temperature of a Carnot heat engine is 350 degree C. What is the intake temperature if the efficiency is 25.0 percent?

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Steam at 100 degree C is added to ice at 0 degree C. The mass of the steam is 10.0kg and the mass of the ice is 50.0g. What is the final temperature of the mixture?
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Answers:
a) 20.4 degree C
b) 40.4 degree C
c) 80.8 degree C
d) 90.1 degree C
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The exhaust temperature of a Carnot heat engine is 350 degree C. What is the intake temperature if the efficiency is 25.0 percent?
======================================
Answers:
a) 400 degree C
b) 543 degree C
c) 558 degree C
d) 830 degree C
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OTA: please take this problem only if you can show step by step problem solving and equations used. Thank you.
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Ramas Ramaswami, PhD, OTA ID# 102922 has returned this posting for the
following reason(s):

- Question is ambiguous or not enough detail included

OTA Comments:

1st problem: the mass of ice should be 50 kg and not 50 grams. Is this
right??
======================================================
STUDENT ANSWER TO OTA'S QUESTION: THIS PROBLEM WAS GIVEN IN A CLASS LECTURE. THEREFORE, THE MASS OF ICE COULD BE 50KG INSTEAD OF 50 GRAMS, BECAUSE I WAS WRITING FAST WHILE THE PROFESSOR WAS SPEAKING.
IF YOU CALCULATE USING 50KG, DO YOU GET ONE OF THE GIVEN MULTIPLE ANSWERS? IF YOU DO, THEN IT MUST BE 50KG INSTEAD OF 50 GRAMS. THANK YOU.

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