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sports1997
04.02.2021 •
Chemistry
A piece of unknown metal with mass 68.6 g is heated to an initial temperature of 100 °C and dropped into 84 g of water (with an initial temperature of 20 °C) in a calorimeter. The final temperature of the system is 52.1°C. The specific heat of water is 4.184 J/g*⁰C. What is the specific heat of the metal? 3.433 0.171 1.717 0.343
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Ответ:
The specific heat of metal is c = 3.433 J/g*⁰C.
Further explanationGiven
mass of metal = 68.6 g
t metal = 100 °C
mass water = 84 g
t water = 20 °C
final temperature = 52.1 °C
Required
The specific heat
Solution
Heat can be formulated :
Q = m.c.Δt
Q absorbed by water = Q released by metal
84 x 4.184 x (52.1-20)=68.6 x c x (100-52.1)
11281.738=3285.94 x c
c = 3.433 J/g*⁰C.
Ответ:
1. The water inside a plant will not be able to come out.
2. It would kill the plants and species on Earth.
3. There would be no lakes, ocean, or water on land.