Answer:
Examples: Si, B, Ge, Sb, Ga
Explanation:
The majority of elements in the periodic table are classified as either a metal (a species that can lose electrons to become a cation) or a non-metal (a species that can gain electrons to become an anion).
However, there are several atoms which are considered to be metalloids. Metalloids are elements which possess properties that resemble both metals and non-metals. Examples of metalloids would be: silicon (Si), boron (B), germanium (Ge), antimony (Sb), gallium (Ga).
Since metalloids have properties of both metals and non-metals, they are widely used in semiconductors, as they might both donate and accept electrons in their shells.
Balanced equation for the neutralisation reaction is as follows
NaOH + HNO₃ --> NaNO₃ + H₂O
stoichiometry of NaOH to HNO₃ is 1:1
number of NaOH moles to be neutralised is - 0.100 mol/L x 0.1500 L = 0.015 mol
therefore number of HNO₃ moles reacted - 0.015 mol
molarity of HNO₃ solution is 0.120 M
volume of solution in which there 0.120 mol - 1 L
then 0.015 mol are in - 0.015 mol / 0.120 mol/L = 125 mL
volume of HNO₃ required - 125 mL
There are 76 atoms in total
In the atom model, the poppy seeds are placed in different places to represent the different position of electrons.
The heat absorbed to raise temperature : Q = 31350 J
<h3>Further explanation
</h3>
Given
m = mass = 150 g
Δt = Temperature difference : 50 °C
Required
Heat absorbed
Solution
Heat can be formulated
<em>
Q = m.c.Δt
</em>
The specific heat of water = c = 4.18 J/g °C
Input the value :
Q = 150 x 4.18 x 50
Q = 31350 J