Posted by **Justin** on Friday, October 28, 2011 at 2:36am.

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 -
**Jai**, Friday, October 28, 2011 at 3:39am
recall that heat absorbed released is given by

Q = mc*(T2 - T1)

where

m = mass (in g)

c = specific heat capacity (in J/g-k)

T = temperature (in C or K)

*note: Q is (+) when heat is absorbed and (-) when heat is released.

we're looking for (T2 - T1) here. substituting,

30000 = 390*3.9*(T2 - T1)

(T2-T1) = 19.72 K

hope this helps~ :)

## Answer this Question

## Related Questions

- Physical Science - HELP WITH THESE PLEASE! If you ride your bike at an average ...
- physics - a banana with a temperature of 17 degrees C (specific heat of banana= ...
- Chemistry - On more than one occasion when our kids were small, we would come ...
- Physics 11th grade 'Heat' - 1) Nova, whose mass is 50.0 kg, stays out skiing for...
- Engineering/Chemistry - Milk is flowing through a heat exchanger at a rate of ...
- Science Help! - Johhny left a glass of milk on his bedside table for a week, and...
- science - Johnny left a glass of milk on his bedside table for a week, and it ...
- Science - Johnny left a glass of milk on his bedside table for a week, and it ...
- Physics - What is the final equilibrium temperature when 7 g of milk at 5C is ...
- Chemistry - A professor orders 250 mL of house coffee at precisely 95°C. She ...

More Related Questions