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Dobrý deň, mohol by niekto skúsiť mi s týmto pomôcť, vypracovať?
Viem, že by sa to napríklad dalo pomocou jazykového prostriedku.
Dobrý deň, akurát riešim jednu otázku z chémie. Týka sa tepelného efektu rozpúšťania. Viem k nemu aj teóriu aj ako to funguje a o čo ide, jediné čo mi nie je jasné je ako určím či konkrétna zlúčenina…
Dobry den, poprosim o vysvetlenie postupu riesenia, dakujem: Katka má dnes narodeniny. Zistila, že o tri roky bude dvakrát staršia ako bola pred siedmymi rokmi. Koľko rokov má dnes Katka?
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