Problem 1.4 300 g of aluminum at 90°c is placed in a calorimeter cup containing 400 g of water. the mass of the copper calorimeter cup 80 g. the initial temperature of the water and cup is 22.0°c. what is the final temperature?

The final temperature is  

Explanation:

Specific heat capacity of aluminum ,

Specific heat capacity of water,

Specific heat capacity of copper ,

Let the final temperature be T degree C

Since Heat lost by aluminium = Heat gained by water and calorimeter

Therefore

=>

=>

Thus the final temperature is  

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.