Tema
Q:
2. Utilizando estructura de resonancia para demostrar porque el grupo COOH en
ácido benzoico es un director meta \( \mathrm{OCH}_{3} \) en anisol es un orientador orto y para
preferentemente.
Q:
1. CON BASE EN LA LECTURA REALICE LAS SIGUIENTES ACTIVIDADES
1. Dé 5 ejemplos de compuestos de cada una de las ramas de la quimica
2. Haga un esquema en el que muestre las relaciones entre los tres medios donde se encuentra la quimica
inorgánica
Q:
How many electrons would be in a neutral atom of the isotope pictured?
Q:
En la reacción de formación de agua, se tienen 15 gramos de bidrogens
Y 20 grames de oxigeno. Cuál es ê celactivo limite?
Q:
2.0 mol of gas are at \( 30^{\circ} \mathrm{C} \) and a pressure of 1.5 atm .
a) How much work (in kJ ) must be done on the gas to compress it to one third of its initial
volume at constant pressure.
b) Show the process on a pV diagram.
Q:
\begin{tabular}{l} HOME THEORY MEDIA MISSION \\ Marie: Earth's atmosphere mainly contains nitrogen \( \left(\mathrm{N}_{2}\right) \), oxygen \( \left(\mathrm{O}_{2}\right) \), carbon dioxide \\ \( \left(\mathrm{CO}_{2}\right) \), and water \( \left(\mathrm{H}_{2} \mathrm{O}\right) \). \\ What kind of acid could be formed from these building blocks? \\ \hline a) Ammonia \\ \hline b) Potassium hydroxide \\ \hline c) Carbonic acid \\ \hline d) Nitric acid \\ \hline\end{tabular}
Q:
After testing multiple samples of control rainwater, it looks like it has an average
5.6. This experiment shows rain is naturally...
\begin{tabular}{|l}\hline a) Strongly acidic \\ \hline b) Neutral \\ \hline c) Slightly alkaline \\ \hline \hline d) Slightly acidic \\ \hline\end{tabular}
Q:
2. The half-life of Erbium-165 is 10.4 hours.
a) What is the hourly decay rate? Express the decimal result to four decimal places and the
percentage to two decimal places.
b) If 5.0 grams of a sample of Erbium-165 are currently radioactive, how much was radioactive
24 hours ago?
Q:
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Use the periodic table to select the element in the following list where there is the largest difference between
the fourth and fifth ionization energy: \( \mathrm{Na}, \mathrm{Mg} \). \( \mathrm{Al}, \mathrm{Si}, \mathrm{P}, \mathrm{Se} \), and Cl .
eTextbook and Media
Q:
2. What was Chadwicks contribution to what we kow of atomic structure?
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