the tempreture of a substance changes from -20to 20 what is thetempreture change in kelvin scale?
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oh and I hope my answer help you
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Answer:40 Kelvin
Explanation:0°C=273K
-20°C=273-20=253K
20°C=273+20=293K
Hence, the temperature change is from 253K to 293K
Therefore;(293-253)Kelvin=40 Kelvin
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