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Dobrý den, chtěla bych poprosit o pomoc s výpočtem u příkladů b. Vychází mi to kolem 130kJ a mělo by to vyjít 115 kJ. Vypočtěte teplo potřebné na ohřátí 5 mol ethylenu z teploty 400 K na teplotu…
Hrana druhé kostky je o 2 cm větší než hrana první kostky. Rozdíl objemů kostek je 728 cm2. Vypočítejte velikosti hran obou kostek.
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