CHEMISTRY HIGH SCHOOL

What is the most polar?

A) C-N
B) C-O
C) C-C
D) C-Cl
E) C-F

Answers

Answer 1
Answer: I would say that the most polar is E) C-F, because polarity is proportional to the difference in electronegativity. Since carbon is the same in each molecule, you need to focus on non-carbon atom, which is the most polar.

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Hi can someone help me with this question! First one to answer it I will make u brainliest
Which atomic model was proposed as a result of J. J. Thomson’s work? the plum pudding model the indivisible atom model an atom that had a lot of empty space an atom that had a concentrated nucleus

Which of the following requires an increase in kinetic energy?liquid ➡ solid

gas ➡ solid

gas ➡ liquid

solid ➡ gas

Answers

Answer:  solid ➡ gas

Explanation:

Solid state : In this state, the molecules are arranged in regular and repeating pattern. The molecules are closely packed that means they are fixed and vibrate in place but they can not move from one place to another. and thus have least kinetic energy.

For example : Copper

Liquid state : In this state, the molecules are present in random and irregular pattern. The molecules are closely packed but they can move from one place to another.. they have intermediate kinetic energy between solids and gases.

For example : water

Gaseous state : In this state, the molecules are present in irregular pattern. The molecules are not closely packed and they can move freely from one place to another and spread out.  They have highest kinetic energy.

For example : Helium gas
solid -> gas will need the increase in kinetic energy

The pH is a solution remains constant in the presence of a buffer if acid or base is added beyond the buffer capacity. True or false.

Answers

The strong acid and strong base has high rate constant of dissociation. Weak acid and base are the one whose rate constant for the dissociation is low, they do not dissociate readily in water. Therefore, the given statement is false.

What are acid and base?

Acid is a solution which releases H⁺ hydrogen ion when dissolved in water. Base are the solution which releases hydroxide ion OH⁻ ion when dissolved in water. pH is measurement of hydronium ion.

A buffer is a solution containing either a weak acid and its salt or a weak base and its salt, which is resistant to changes in pH. The statement is false. When you add an acid or base in amounts greater than the buffer capacity you no longer have the buffer to influence solution pH.

Therefore, the given statement is false.

To know more about acid and bases, here:

brainly.com/question/27228111

#SPJ2
The answer is false. When you add an acid or base in amounts greater than the buffer capacity you no longer have the buffer to influence solution pH

Which interaction is responsible for the force of attraction between the particles in a salt crystal? A. proton-proton
B. proton-electron
C. neutron-electron
D. electron-electron

Answers

The answer is proton-electron attraction. All chemical bonds whatever the type will end up in one single idea that protons attracts electrons. The protons in the nuclei of an atom attracts all electrons near, those that came with the atom itself and electrons of atoms nearby. The two atoms get closer and a chemical bond is formed.

Answer:

b

Explanation:

If 2.0 mL of 6.0M HCl is used to make a 500.0-mL aqueous solution, what is the molarity?

Answers

Answer:

0.024M

Explanation:

Data obtained from the question include:

C1 = 6M

V1 = 2mL

C2 =?

V2 = 500mL

The molarity of the diluted solution can be obtained as follows:

C1V1 = C2V2

6 x 2 = C2 x 500

Divide both side by 500

C2 = (6 x 2) /500

C2 = 0.024M

The molarity of the diluted solution is 0.024M

Answer:

The molarity is 0.024 mol / L

Explanation:

Molarity = Number of moles / Volume of solution

= (6.0 mol/L x 2.0 x 10^(-3) L) / 0.500 L

= 0.024 mol / L

Please help me fill this all out! (Will give brainliest and a heart) This has to do with the fight or flight response.

Answers

Being at the beach: Joyous, thrilled - Smiling, jumping (for joy)
Seeing a tornado nearby: Terror, despair - Crying, shaking
Crossing paths with a grizzly bear: Doom, hopelessness - Frozen, sweating
Skydiving: Anxious, excited - Fidgeting, nervous laughter
Noticing a suspicious figure...: Suspicious, frightened - Observing, running
Seeing a neighbors house on fire: Pity, distress - Frowning, shaking
Seeing two dogs..: Affectionate, happiness - Smiling, giggling
Receiving money: Surprised, relieved - Jumping for joy, crying

Fight or flight response, tornado, grizzly bear, fire, suspicious figure, - maybe skydiving if you chicken out?

These are all opinions though hopefully this helps.

What can be determined if only the atomic number of an atom is known?(1) the total number of neutrons in the atom, only
(2) the total number of protons in the atom, only
(3) the total number of protons and the total number of neutrons in the atom
(4) the total number of protons and the total number of electrons in the atom

Answers

Answer;

(4) the total number of protons and the total number of electrons in the atom

Explanation;

-Atomic number is the number of protons in the nucleus of an atom. An atom is made up of energy shells and the central nucleus. The energy shells contains electrons that are negatively charged while the nucleus contains protons (positively charged) and neutrons (neutral).

-In a neutral atom, the number of protons and electrons are equal, thus the atomic number would indicate the number of electron and protons in an atom. The sum of protons and neutrons on the other hand gives the mass number.

It is the "(4) the total number of protons and the total number of electrons in the atom" that can be determined if only the atomic number of an atom is known.
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