Gunos 3. Identifica los tipos de iones y completa la información de la tabla 2.13.
no (0)
Ión
Tabla 2.13 Datos de algunas especies químicas
Número de
¿Tiene mayor o menor
electrones
número de protones que
de electrones?
epres
Tipo de ión
(anión o cation)
Al3+
13
10
ce en cada
eria
oxígeno?
19
18
9
10
Mg?
éculas y no
Lewis son
Vio
20
1
18
I
moléculas
4. Propón la representación de Lewis para las siguientes fórmulas:
CÓ, NH, NO, N, Si.
A partir de las fórmulas anteriores responde.
a) ¿Cuáles representan un átomo?
b) ¿Cuáles representan una molécula?
c) ¿Cuáles se asocian a un elemento?
d) ¿Cuáles son iones? ¿De qué tipo son?​

What is the number of moles in 15.0 g ash3?

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н,о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.