O = C = O Straight because there is no solitary electrons on C
Answer:
hydronic chloride that's it
Answer:- B- 
Explanations:- Sharing of electrons takes place between non metals and the bond formed by the sharing of electrons is known as covalent bond. In first choice we only have a zinc metal and so no sharing of electrons would be possible here.
In third choice we have NaCl. Na is a metal and Cl is a non metal. The property of metals is to transfer its valence electrons to the non metal and the bond formed is known as ionic bond. So, third choice is also not correct.
In choice B we have sulfate ion that has sulfur and oxygen atoms and both of these are non metals. So, sharing of electrons is present here between the S and O atoms and covalent bonds are formed.
So, choice B- is the right answer.
Answer:
The volume of the sheet metal = 0.58 cm³
<em>Note: The question is incomplete. A similar complete question is given below:</em>
<em>a 7.50 g piece of metal was rolled into a thin sheet measuring 24.0 cm × 30.0 cm</em>
<em>the density of the metal is 12.86 g/cm</em>
<em>calculate the volume of the sheet of metal</em>
Explanation:
The mass of a substance is the quantity of matter present in that substance
The volume of a substance is amount of space the substance occupies
Density of a substance is the ratio of its mass and the volume it occupies. It is a measure of how compact a body is.
From definition above;
Density = mass/volume
Therefore, volume = mass/density
mass of thin sheet = 7.50 g
density = 12.86 g/cm³
Volume = 7.50 g / 12.86 gcm⁻³
Volume = 0.58 cm³
Therefore, the volume of the sheet metal = 0.58 cm³
A H₂ molecule is represented as follows:
H-H, Here two hydrogen atom that is H are connected by a single bond that is represented by -.
But here it is given as H-H-, there is presence of an extra bond that is shown after the attachment of two H atoms. So that is wrong in this structure, that is the presence of extra - bond . The wrong thing over here is only that presence of extra bond -.
