The volume of a 0.40 M Mg(NO3)2 solution contains 89g of Mg(NO3)2 is 1.5 L.
Solution is defined as a particular kind of homogenous combination made up of two or more different ingredients. Solute refers to the material that dissolves. Solvents are described as substances that do not dissolve. The substance known as salt water is a solution. A solute and a solvent combine to produce a solution; this is a physical, not a chemical process. A solution is produced when one substance splits apart or dissolves into another.
To calculate this, subtract 89g from 148.3g/mol, the molar mass of magnesium nitrate.
= 89 / 148.3
= 0.6 mole of magnesium nitrate
The volume of solution can be as
= 0.6 moles / 0.40 M
= 1.5 liter.
Thus, the volume of a 0.40 M Mg(NO3)2 solution contains 89g of Mg(NO3)2 is 1.5 L.
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The ion which is most easily reduced is the cobalt (II) ion(Co²⁺).
Reduced species are those species which itself gets reduced by the addition of electrons in it, and known as the oxidizing agents as it helps in the oxidation reaction.
Among the given species according to the electrochemical seriesstrength of the metals as oxidizing agent increases in the following manner:
Ca²⁺ < Mg²⁺ < Zn²⁺ < Co²⁺
So, Co²⁺ is most easily reduced as compared to others.
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Answer:
Decreases abs basicity decrease
Explanation:
b. forming solutions.
c. exothermic reactions.
d. endothermic reactions.
Answer : Rust forms when oxygen reacts with chemicals in rocks.
Explanation :
Rusting : It is a chemical process in which an iron react with oxygen to give an iron(III)oxide as a product. The product iron(III)oxide formed from the chemical reaction is known as rust.
The chemical reaction will be,
Hence, rust forms when oxygen reacts with chemicals in rocks.
B. The greater the dipole moment, the stronger the dipole-dipole forces.
C. The polarizability of elongated molecules is greater than that of compact, more spherical molecules.
D. London dispersion forces weaken in the order Xe < Kr < Ar
E. Hydrogen bonding leads to the strongest intermolecular forces.
Answer:
D. London dispersion forces weaken in the order Xe < Kr < Ar is an incorrect order, the correct order of London dispersion forces weaken in the order Ar < Kr < Xe.
Explanation:
A. Dispersion forces are present in all molecular substances.
is a correct statement London dispersion forces are weak intermolecular forces found in all molecular substances.
B. Clearly, greater the dipole moment, greater will be dipole-dipole forces. Hence true.
C) The polarizability of elongated molecules is greater than that of compact, more spherical molecules. The more elongated the molecule is more will be its ability to get polarized.
D. London dispersion forces weaken in the order Xe < Kr < Ar is an incorrect order, the correct order of London dispersion forces weaken in the order Ar< Kr < Xe.
E) Hydrogen bonding leads to the strongest intermolecular forces is also a correct statement. Hydrogen bonding leads to increase in boiling point.