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
Vedel by mi prosím niekto poradiť s úlohou číslo 3? A zdôvodniť aj prečo.
Vopred ďakujem.
Vedel by mi niekto s týmto príkladom prosím pomôcť? Vypočítajte koľko ml 85% H3PO4 potrebujeme na prípravu 25 cm3 jej roztoku s koncentráciou 4 mol/dm3. M(H3PO4)=98g/mol Hustota 83%H3PO4=1,68g/cm3
Na reakciu 300 ml kyseliny sírovej s c = 0,5 mol . dm-3 sa navá~ilo 16 g NaOH. Aká bude koncentrácia hydroxidu sodného po reakcii, ak objem reakčnej zmesi bol doplnený na 0,5 l ?
Vypočítajte objem roztoku KMnO4 s koncentraciou 0,05 mol/dm3 ktory mozno pripraviť z 15,2 g KMnO4
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.
