True or false: in the water cycle, water returns to Earth as condesation, usually in the form of rain or snow.
2 answers:
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Answer:
The final temperature of the mixture is = 42.14 °C
Explanation:
Mass of the aluminium = 101 gm
Specific heat for aluminium = 0.9
Temperature of aluminium = 100.1 °C
Mass of water = 48.9 gm
Specific heat for water = 4.2
Initial temperature of water = 16.5 °C
From energy balance principal when the aluminium piece is heated and dropped in to the water , the final temperature of aluminium & the water becomes equal.
From the energy conservation principal
Heat lost from the aluminium piece = heat gain by the water
⇒
(
-
) =
(
-
) ----------- (1)
Put all the values in equation (1)
⇒ 101 × 0.9 × (100.1 - ) = 48.9 × 4.2 × (
- 16.5 )
⇒ 90.9 × (100.1 - ) = 205.38 × (
- 16.5 )
⇒ 100.1 - = 2.26 (
- 16.5 )
⇒ 100.1 - = 2.26
- 37.28
⇒ 3.26 = 137.38
⇒ = 42.14 °C
Therefore the final temperature of the mixture is = 42.14 °C