What volume of a 0.40 M Mg(NO3)2 solution contains 89g of Mg(NO3)2?

Answers

Answer 1

Answer:

The volume of a 0.40 M Mg(NO3)2 solution contains 89g of Mg(NO3)2 is 1.5 L.

What is solution?

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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Answer 2

Answer: First you need to find the number of moles there are in 89g of Mg(NO₃)₂ . To do this, divide the 89g by the molar mass of magnesium nitrate (148.3g/mol) to get 0.6mol of magnesium nitrate. Then to find the volume of solution that contains 0.6 moles you need to divide 0.6mol by 0.40M to get 1.5L of solution.

I hope this helps. Let me know in the comments if anything is unclear.

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Which ion is most easily reduced?(l ) Zn2+ (2) Mg2+ (3) Co2+ (4) Ca2+

Answers

The ion which is most easily reduced is the cobalt (II) ion(Co²⁺).

What is reduced species?

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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CO2+ is-the ion that-is easily reduced.

Name at least three types of energy associated with a microwave

Answers

I'm pretty sure what you are trying to ask for is radiative energy, light energy, and electronic energy.
Radiative since the microwave is releasing radiation,
Light since there is light inside the microwave,
Electronic since it is plugged in and uses electricity.
You can also use sound, but I don't think every microwave makes sound.

When a 1.0 M solution of HCl is titrated with a 1.0 M solution of KOH, which is the approximate pH at the equivalent point?

Answers

The equivalence point is when the concentration of H⁺ in solution is equal to the concentration of OH⁻ in solution. Since H⁺ and OH⁻ react with each other to make water (H⁺(aq)+OH⁻(aq)→H₂O(l)) the pH at the equivalence point is 7 due to everything being neutralized. (The equivalence point only has a pH of 7 when a strong acid is being titrated with a strong base).

I hope this helps. Let me know if anything is unclear.

Answer:

Decreases abs basicity decrease

Explanation:

Baking a cake is an example of -a. forming mixtures.
b. forming solutions.
c. exothermic reactions.
d. endothermic reactions.

Answers

I think the correct answer is D. Baking a cake is an example of endothermic reaction. The chemical changes happening when you bake a cake includes denaturing proteins in milk, eggs, and flour. Chemical bonds are broken and new bonds are made. To aid these changes, heat is supplied by the heat in an oven.

Rust forms when _____ reacts with chemicals in rocks.

Answers

Rust forms when oxygen reacts with chemicals in rocks, and that is often the case with many other elements in general. Like a copper nail being exposed to the air will rust.

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,

$4Fe+3O_2\rightarrow 2Fe_2O_3$

Hence, rust forms when oxygen reacts with chemicals in rocks.

Which notion is incorrect?A. Dispersion forces are present in all molecular substances.
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.

Answers

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.

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