![subject](/tpl/images/cats/himiya.png)
La teobromina (C7H8N4O2) de una muestra de cacao molido de 2,95 g se convirtió en la sal de plata poco soluble C7H7N4O2Ag calentando la muestra en una disolución amoniacal que contenía 25 mL de AgNO3 0,0100 M. Tras completar la reacción se eliminaron los residuos sólidos por filtración. A) Calcule el porcentaje en masa de teobromina (Masa molecular = 180,1 g/mol) en la muestra si la disolución obtenida tras la filtración junto con los líquidos de lavado se combinaron y requirieron 7,69 mL de KSCN 0,0108 M hasta alcanzar el punto final de la valoración. B) Indique asimismo qué indicador podría utilizar para detectar el punto final de esta valoración.
![ansver](/tpl/images/cats/User.png)
Answers: 3
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 15:30
Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 00:30
What are the advantages of using the metric system? designed as a decimal system making conversions simpler more accurate system of measurement has prefixes that correspond to an amount to use with all base units used by the entire scientific community
Answers: 2
You know the right answer?
La teobromina (C7H8N4O2) de una muestra de cacao molido de 2,95 g se convirtió en la sal de plata po...
Questions
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 03.05.2021 17:10
![question](/tpl/images/cats/mat.png)
Mathematics, 03.05.2021 17:10
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/fizika.png)
Physics, 03.05.2021 17:10
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 03.05.2021 17:10
![question](/tpl/images/cats/es.png)
Spanish, 03.05.2021 17:10
![question](/tpl/images/cats/mat.png)
Mathematics, 03.05.2021 17:10
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 03.05.2021 17:10
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 03.05.2021 17:10
![question](/tpl/images/cats/mat.png)
Mathematics, 03.05.2021 17:10
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)