Tuesday
May 21, 2013

# Posts by Justin

Total # Posts: 575

science
a 425 g cylinder of brass is heated to 90/0 degree C and placed in a calorimeter containing 334 g of water at 25.0 degree C. The water is tirred and its highest temperature is recorded as 32.0 degree C. From the thermal energy gained by the water, determine the specific heat ...

science
as 390 g of hot milk cools in a mug, it transfers 30,000 J of heat to the environment. What is the temperature change of milk? The specific heat of milk is 3.9 J/g degree C.

science
how many kilojoules of heat must be transferred to a 480 g aluminum pizza pan to raise its temperature from 22 degree c to 234 degree c? The specific heat of aluminum in this temperature range is 0.97 J/g degree C.

SS
Thanks.:D What are the 2 others? Does anyone else know?

SS
What are the 3 most visited "natural attractions" in the U.S.?

Math
wedsday

SOCIAL STUDIES
In 1900 for health reasons the course of what river was changes in the U.S. making it world's only river to flow backwards?

algebra
Dale is choosing between two exercise routines. In Routine #1, he does only running, burning 10 calories per minute. In Routine #2, he burns 10 calories walking. He then runs at a rate that burns 8 calories per minute. For what amounts of time spent running will Routine #1 bur...

Chemistry
At2 26.3C, F2 molecules have a certain value of rms speed. At what temperature would the rms speed of O2 molecules be the same?

social studies
what is the landmarks of newjersey?

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