Which atom below would be MOST likely to form a compound with magnesium (Mg) in a ratio of one to one?
1 answer:
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The new volume of the bag will be 789.5 mL.
<u>Explanation:</u>
As per the Charles law, at constant pressure the volume of the gas is directly related to its temperature in Kelvin (K). That is as the temperature increases, the gas expands and vice-versa.
V1 = 250 ml
V2 = ?
T1 = 19° C
T2 = 60° C
Now we have to rewrite the equation to get the new volume as,
V2 =
=
<em> </em>= 789.47 ≈ 789.5 ml.
So the new volume of the bag will be 789.5 mL.
Answer:
Choice number two: this element is malleable and ductile.
Explanation:
A modern periodic table can be split into three sections:
(from left to right)
- Metals,
- Metalloids, and
- Nonmetals.
Based on the descriptions, section A likely refers to the metals. Section B likely refers to metalloids. Section C likely refers to nonmetals.
Metals are malleable and ductile. They are good conductors of electricity.
The reason is that in a metal, the valence electrons do not belong to some specific atom. Rather, the metal cations share these electrons. The electrons are free to move around the metal and conduct electricity.
Ionic compounds like table salt are brittle. The reason is that when an ionic compound is deshaped, ions of the same charge come directly into contact with each other. That creates repulsion and cracks the crystal. In contrast, the metal cations in a metal won't come into contact with each other. Electrons would rapidly fill the gap between these cations, so the metal won't crack. That's why unlike ionic compounds, metals are malleable and ductile.
The melting points of metals can vary significantly. Indeed, the mercury (, a metal) is a liquid at room temperature. In contrast, tungsten (
, also a metal) won't melt until it is heated to over
.