I think the answer is c. I'm sorry if I'm wrong. I hope this helps also
Answer:
The answer to your question is:
Explanation:
Ion is an atom that carries out a positive or a negative charge.
It is formed when an atom loses electrons. Yes, when an atom loses electrons then is formed a positive ion.
It is usually a nonmetallic element. Incorrect. Ions can be form by metallic or non metallic ions.
It has more electrons than protons. Yes, when an atom gains electrons is formed a negative ion.
It is formed when an atom gains protons. I think is incorrect, ions are formed when they gain or lose electrons not protons.
The chemical formula of a compound express the atoms by which the molecule is formed and the ratio of the atoms in which they are combined.
The space filling model of a compound describe the electron density in the compound of each atom.
The ball and stick arrangement of a compound describe the way in which the molecules are present in three dimensions.
The structural formula state the number of atoms present in the molecule, the type of element or atom present in the molecule and the way in which they are arranged closely which is the bond.
Thus only the structural formula only will cover all the options as stated.
Answer:
A concentrated acid is an acid which is in either pure form or has a high concentration. Laboratory type sulfuric acid (about 98% by weight) is a concentrated (and strong) acid. A dilute acid is that in which the concentration of the water mixed in the acid is higher than the concentration of the acid itself.
Explanation:
Concentrated acid - Those acids which are pure or have very high concentration in water are called as concentrated acids. For example concentrated Hydrochloric acid (HCl) and concentrated Sulphuric acid are examples of concentrated acids.