Create your student account before you continue - it's free.
You will receive the verification email in a minute. Write down your code to verify your account or click the verification link.
Have you already verified your email by clicking the link?
Complete your registration
Dobrý deň,
potrebovala by som pomoc s nasledujúcim príkladom:
25litrov 80% kyseliny sírovej (hustota je 1,7 kg/l) sa má zriediť na 16% roztok. Vypočítajte aký objem vody je potrebné pridať.
Vopred veľmi pekne ďakujem za pomoc😊
Dobrý deň, chcela by som sa spýtať ako mám toto vypočítať , ak by sa dalo aj vysvetlit tie kroky? Ďakujem.
a) 2 Ag + 2HNO3 → AgNO3 + H2 b) CaO + H2O → Ca (OH)2 c) 2 KOH + H2SO4 → K2SO4 + 2 H2O d) CaCO3 → CaO + CO2 e) N2 + 3H2 → 2 NH3
Dobrý deň, prosím, ako vypočítať tieto príklady? ďakujem. :) 1. Na aké číslo treba zmeniť číslo 4 medzi číslami 4, 5, 7, 1, 0,9, 7, 8, -3, 5 aby sa aritmetický priemer týchto čísel zväčšil o 1,25? …
doučma.sk
Are you looking for chémia tutoring? Find the right chémia tutor for online or in-person tutoring near you.
We access the information stored on your device for this website to function properly. This includes, for example, cookies or local browser cache. We use this to store the data necessary for the functioning of the website, data used for analytical purposes, or data stored by third parties.
If this information is essential for the operation of this website, we store it automatically. For everything else, we need your consent, which you can choose to give below. Your consent is valid for 12 months. Should you refuse, we will ask you for consent again in 6 months, but you are free to change your mind at any time. For more information, please see our GDPR and Terms of Use.
