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Suppose you should make tea and that you pour 3.4 dl of boiling water into a...

Suppose you should make tea and that you pour 3.4 dl of boiling water into a cup. You want to drink your tea at a temperature of 55 ° C and therefore plan to put ice cubes in the boiling water so that the temperature is right. You take ice cubes from the freezer where the temperature is - 18 ° C. The ice cubes weigh 15 g. How many ice cubes should you put in your tea water? Suppose the teacup acts as a thermos and that no heat losses to the surroundings occur.

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