CHEMISTRY HIGH SCHOOL

In comparison with liquids and gases, solids area. more dense.
b. more easily compressed.
c. less organized.
d. more likely to flow.

Answers

Answer 1
Answer: In comparison with liquids and gases, solids are more dense. The answer is letter B. The solid has a more definite shape and volume. The particles are locked into place. It cannot be further compressed due to the bond that exists between the molecules. The kinetic energy of the molecules is close to none because the molecules are so close and so compact with each other. 

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15) Circle one and tell whya. CH3COOH is a n) (acid, base, salt)b. NH4Cl is a(n) (acid, base, salt)c. KOH is a(n) (acid, base, salt)d. H3PO4 is a(n) (acid, base, salt)e. CaBr2 is a(n) (acid, base, salt)

Answers

The answers to the given questions are:

a. CH3COOH = acid
b. NH4Cl = salt
c. KOH = base
d. H3PO4 = acid
e. CaBr2 = salt

Reasons:

a. This compound is also known as acetic acid, the acid found in vinegar. It can be observed that the compound has a hydrogen ion which makes the compound acidic.

b. Ammonium chloride is a salt because it is the product of an acid (hydrochloric acid, HCl) and base (ammonium hydroxide, NH4OH)

c. Potassium hydroxide is a base because of the presence of OH ion

d. Phosphoric acid is a base because it has 3 hydrogen ions that contributes to its acidity

Answer:

C) CH3COOH Is the answer you are looking for

Explanation:

This one makes the most sense and the other ones don't fit in with the acids they aren't Acidic those are either bases or neutrals! :)

Hope this helps! :)

The bond formed from electrons that are transferred is a(n) ionic bond hydrogen bond covalent bond

Answers

Ionic bonds are formed from electrons completely transferred.

Hydrogen bonds are formed when a hydrogen atom is attracted to an atom with extremely high electronegativity.  Hydrogen bonds can only be formed with O, N, or F atoms.

Covalent bonds are formed with the sharing of electrons between atoms.

Answer:A.)  ionic bond

Explanation:

When 25.0 mL of sulfuric acid solution was completely neutralized in a titration with 0.05 M NaOH solution, it took 18.3 mL of the NaOH(aq) to complete the job. The reaction is:NaOH(aq) + H2SO4(aq) → Na2SO4(aq) + H2O(l)
What was the molarity of the sulfuric acid solution?

Answers

Balanced equation will be as follows

2NaOH + H2SO4=Na2SO4 + 2H2O
from MaVa/MbVb=Na/Nb    where Ma is molarity of acid=?
                                                   Va is volume of acid=25.0 mL
                                                   Mb is molarity of base= 0.05 M
                                                   Vb is volume of base=18.3 mL
                                                    Nb number of moles of base= 2
                                                     Na is number of moles of acid =1

Ma*25 mL / 18.3mL*0.05M = 1/2
Ma=18.3*0.05M / 50 = 0.0183M


The molarity of sulphuric acid = 0.0183M

Final answer:

The molarity of the sulfuric acid solution is found using the formula: M1V1/2 = M2V2 to account for the 2:1 ratio of NaOH to H2SO4 in the reaction. Substituting the given values yields the molarity of sulfuric acid solution as 0.0732M.

Explanation:

This problem involves a concept known as titration, specifically acid-base titration. In this process, one solution (in this case, the base NaOH) is added to another solution (the acid H2SO4) until the mixture is neutralized. The balanced chemical equation NaOH + H2SO4 -> Na2SO4 + 2H2O tells us that the reaction occurs in a 2:1 ratio of NaOH to H2SO4.

To find the molarity of the sulfuric acid, we use the formula: M1V1 = M2V2, where M1 is the molarity of the NaOH, V1 is the volume of the NaOH, M2 is the molarity of the H2SO4 (which we want to find), and V2 is the volume of the H2SO4. However, we need to adjust the equation to M1V1/2 = M2V2 because the reaction occurs in a 2:1 ratio of NaOH to H2SO4.

So substituting the given values into the equation, we have (0.05 M * 18.3 mL) / 2 = M2 * 25.0 mL. Solving for M2, the molarity of the sulfuric acid solution, yields M2 = 0.0732M.

Learn more about Acid-Base Titration here:

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Which statement explains why the bonds between nonmetals tend to be covalent? The bonds are found to be nondirectional. They have large differences in electronegativity. They have small differences in electronegativity. They have ions that produce an electrostatic pull.

Answers

Correct Answer: They have small differences in electronegativity (statement 3)
Reason: 
The nature of chemical bond between atoms is primarily driven by the electronegativity  difference between constituent atoms. If electronegativity difference between constituent atoms is significantly higher, ionic bond formation is preferred. On other hand, low difference in electronegativity values, favours formation of covalent bond. 

Choose all of the examples where there would be an increase in the electric or magnetic force

Answers

Answer:

Explanation:

1) Increase the amount of charge on each object

2) Decrease the distance between each object

3) Increase the mass of the objects.

just colmpeated this in usa test prep 100% correct

A thermometer is in a beaker of water. Which statement best explains why the thermometer reading initially increases when LiBr(s) is dissolved in the water?(1) The entropy of the LiBr(aq) is greater than the entropy of the water.
(2) The entropy of the LiBr(aq) is less than the entropy of the water.
(3) The dissolving of the LiBr(s) in water is an endothermic process.
(4) The dissolving of the LiBr(s) in water is an exothermic process.

Answers

The statement best explains why the thermometer reading initially increases when LiBr(s) is dissolved in the water is the dissolving of the LiBr(s) in water is an exothermic process.

What is a thermometer?

A thermometer is an instrument that is used to measure the temperature of an object.

An exothermic process is in which the heat and energy is released in the outer system.

Thus, the correct option is (4) The dissolving of the LiBr(s) in water is an exothermic process.

Learn more about thermometer

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(4) The dissolving of the LiBr(s) in water is an exothermic process
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