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Vypočítejte hmotnostní zlomek železa.Dále vypočítejte,kolik miligramů železa je v jednom balíčku uvedeného rozpustného nápoje,který váží 30gramů.Na etiketě rozpustného nápoje je uvedeno,že ve 100…
1) Vypočítej , kolik gramů cukru obsahuje 250g jogurtového nápoje s obsahem 1,5% cukru. moc děkuji
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