You are watching: What is solid carbon dioxide called
Solution: Solid CO2 is referred to as as dry ice, bereason it does not melt right into liquid when heated, it transforms directly into gas. This procedure is recognized as Sublimation.
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A spbelow, a cube and a thin circular plate are heated to the very same temperature. All are made of the same material and have the equal masses. If t1,t2 and t3 are the particular time taken by the sphere, cube and the circular plate in cooling dvery own to a widespread temperature, then
A cup of tea cools from 65.5oC to 62.5oC in 1 minute in a room at 22.5oC. How lengthy will certainly it take to cool from 46.5oC to 40.5oC in the very same room?
A solid body X of heat capacity C is retained in an setting whose temperature is TA=300K. At time t=0 the temperature of X is T0=400K. It cools according to Newton"s legislation of cooling. At time t1, its temperature is discovered to be 350K.At this time (t1), the body X is connected to a huge body Y at atmospheric temperature TA, through a conducting rod of size L, cross-sectional location A and thermal conductivity K. The warmth capacity of Y is so large that any type of variation in its temperature may be neglected. The cross-sectional location A of the connecting rod is tiny compared to the surconfront location of X. Find the temperature of X at time t=3t1.
If a item of metal is heated to temperature θ and also then enabled to cool in a room which is at temperature θ0 the graph between the temperature T of the steel and also time t will be clocollection to:
A body cools in 7 minutes from 60oC to 40oC. What is the temperature of the body after next 20 minutes? The temperature of neighboring is 10oC.
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The warm power forced to raise the temperature of 2kg of water from 100Cto500C is (Specific heat capacity of water is 4200JKg0C−1)
A body at temperature 40C is retained in a surrounding of continuous temperature 20C. It is observedthat its temperature drops to 35C in 10 minutes. Find just how a lot more time will certainly it take for the body to achieve a temperature of 30C
A babsence body at 3270C, once suspended in babsence enclosure at 270C cools at a certain rate. Find the temperature of body at which its price of cooling will be half of over rate. Assume the various other conditions remain unadjusted.