The Lewis dot structure for Mg3N2 represents the ionic bonding between magnesium and nitrogen. Each magnesium atom donates its 2 valence electrons to nitrogen, as represented by zero dots around each Mg and eight around each N.
The student is asking about the Lewis dot structure of Mg3N2, which is commonly known as magnesium nitride. The Lewis dot structure is a graphical representation of the molecule that shows how the electrons are arranged among the atoms of the molecule.
To draw the Lewis dot structure for magnesium nitride, follow these steps:
This process represents the Ionic bonding in Mg3N2.
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The energy that is released by cellular respiration is in the form of
a. dark energy.
b. solar energy.
c.nuclear energy.
d.chemical energy.
Its D.Chemical Energy
a magnifying glass
B.
a telescope
C.
chemical safety goggles
D.
a microscope
Answer:
chemical safety goggles do not have lens.
Explanation:
We use lenses to make a clear picture of anything.
They may be used to magnify an object.
Lens can be used in microscope to magnify the image of a microscopic object.
Telescope is used to see far objects, clearly.
Magnifying glass is a simple lens used for magnifying the image of any small ojbect or image or letter.
However chemical safety glasses uses simple glass.
c. Fluorite
b. Topaz
d. Gypsum
Gypsum
The hardness of minerals or substances is measured qualitatively using Mohs Scale. In this scale the hardness is measured qualitatively by characterizing the resistance shown by one substance when rubbed against second substance. Therefore, greater points are given to those substances which are capable of making scratches on other substances. The Mohs Scale of given compounds is as follow,
Diamond 10
Fluorite 4
Topaz 8
Gypsum 1.5 to 2
While the hardness value of Fingernail is 2 to 2.5. Hence, this value is close to Mohs scale hardness value of Gypsum therefore, gypsum is the correct answer.