Please describe what each of the molecules are doing and why there moving like that.

Answer:

chemical stability is important to consider in the comprehensive assessment of pharmaceutical properties, activity, and selectivity during drug discovery.

Answer:

In general, molecules are stable because all their constituent atoms have sufficient "valence" electrons-that is, electrons that participate in chemical bonding. Such electrons reside in the outer, or valence, "shell," which must fill up with the appropriate number of electrons for the bound atoms to be come stable.

Explanation:

Answer:

a and b

Explanation:

Answer:

The after-rain smell is produced by an interaction between rain and the oils released by plants. Due to chemical reaction between the rain water and oils secreted out by the plants

A homemade volcano can be created by combining baking soda and vinegar. When it erupts, carbon dioxide gas is released. When vinegar reacts with baking soda  carbon-dioxide gas is released.

The Statue of Liberty has turned green over time due to the reaction of copper with ,oxygen,carbon dioxide and water.

Explanation:

Chemical change is defined as those change in which arrangement of atoms present in the substance changes and leads to formation of new substance.

The after-rain smell is produced by an interaction between rain and the oils released by plants. Due to chemical reaction between the rain water and oils secreted out by the plants

A homemade volcano can be created by combining baking soda and vinegar. When it erupts, carbon dioxide gas is released. When vinegar reacts with baking soda  carbon-dioxide gas is released.

[tex]CH_{3} COOH+ NaHCO_3[/tex]→[tex]CO_2+H_2O+CH_3COONa[/tex]

The Statue of Liberty has turned green over time due to the reaction of copper with ,oxygen,carbon dioxide and water.

[tex]Cu+O_2+CO_2+H_2O[/tex]→[tex]Cu_2(OH)_2CO_3[/tex]

Physical change is defined as those changes which leads to change in shape, size or state of the substance changes. No new substance is formed.

Answer:

In molecules, there is a pattern to the number of covalent bonds that different atoms can form. Each block with a number indicates the number of covalent bonds formed by that atom in neutral compound

Explanation:

I don't really know the answer sorry

Answer:

Ethyne is a colourless gas with a characteristic smell. It has a melting point -81oC. It has a boiling point -84oC.

Explanation:

Answer:

frequency  = 8.22 x 10¹⁴ s⁻¹

Explanation:

An electron's positional potential energy while in a given principle quantum energy level is given by Eₙ = - A/n² and A = constant = 2.18 x 10⁻¹⁸j. So to remove an electron from the valence level of Boron (₅B), energy need be added to promote the electron from n = 2 to n = ∞. That is, ΔE(ionization) = E(n=∞) - E(n=2) = (-A/(∞)²) - (-A/(2)²) = [2.18 x 10⁻¹⁸j/4] joules = 5.45 x 10⁻¹⁹ joules.

The frequency (f) of the wave ionization energy can then be determined from the expression ΔE(izn) = h·f; h = Planck's Constant = 6.63 x 10⁻³⁴j·s. That is:

ΔE(izn) = h·f => f = ΔE(izn)/h = 5.45 x 10⁻¹⁹ j/6.63 x 10⁻³⁴ j·s = 8.22 x 10¹⁴ s⁻¹

Answer:

a).

Explanation:

precise electron locations cannot be calculated, only predicted based on previous calculations. they cannot know whether or not an electron will be or will not be somewhere specific

have a nice day!

Answer:

All of them are equal cause they both have the same sign

Explanation:

Answer:

8% thymine

Explanation:

The percent of thymine in the given sample of the DNA will be equal to 8 %.

DNA, according to Chargaff, is composed of nucleotide subunits. These nucleotides are linked through two or more hydrogen-bonded to one another to form the double-stranded molecule of DNA.

The nucleotides found in the DNA molecule are Adenine, Thymine, Cytosine, and Guanine. Guanine (G) pairs with Cytosine (C) while  Adenine (A) pairs with Thymine (T).

According to Chargaff's rule, the amount of Adenine is equal to that of Thymine in a DNA molecule and the same applies to Guanine and Cytosine. We can consider that the total amount of nucleotides equals 1 or 100%.

[tex]A + T + G + C = 100\%[/tex]

If Cytosine is 42 % of the DNA sample, this means that guanine will also be  42%.

G + C = 42 + 42  = 84%

A + T = 100% - 84 % = 16%

This means that Adenine and Thymine amount to 16 %. The amount of each nucleotide will be 16% ÷ 2 = 12% i.e. A = T = 8 %

Therefore, the percent of thymine in the given sample of the DNA will be 8 %.

Learn more about the structure of DNA, here:

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Answer:

B for element 1 0 charge

Explanation:

Atomic Number

Atomic Mass Number

Protons

Neutrons

Electrons

Charge

Element 1

6

12

A

6

6

B

Element 2

6

13

6

C

D

1+

Look at the above table.

What charge (B) should Element 1 have

Question 2 options:

0

6

12

1+

from the data we can construct the following table

                                    element  1         element 2  

Atomic #                               6                     6

Atomic mass                         12                   13

protons                                   6                    6                          

neutrons                                  6                   7  

electrons                                  6                   5          

charge                                      0                   +1

the atomic # of both is 6, so they are both carbon with 6 protons

element 1 has a total of protons plus neutrons of 12, element 2 of 13

so element 1 has 6 neutrons,element 2 has 7

element 2 has a +1 charge with 6 protons, so it has only 5 negative electrons

element 1 with 6 protons has 6 electrons, so it has a 0 charge

Answer:

 A FLUORINE

Explanation:

Explanation:

Option A, Fluorine is the correct answer, because it has 9 electrons in its shells.

hope this helps you.

Answer:

1.Frequency

2.Amplitude

3.Wavelength

4.Medium

5.Back and Forth

6.Up and Down

Explanation:

CORRECT ME IF I'm wrong

it's an ionic bond

btw i love your profile picture never understand is one of my favorites

Answer:

159.808 g/mol

Answer:

159.80 g/mol

Explanation:

79.90×2=159.80g/mol

Answer:

true

Explanation:

Answer

199 ATM

EXPLANATION

assume that the volume is constant.  At higher temp the gas molecules move faster and the pressure goes up.

P=kT

CONVERT C TEMP TO K TEMP FOR GAS PROBLEMS!!!!!!

108C = 108 +273 = 381 K

441C = 441 + 273 = 714K

P=kT

108 =k x 381

K=108/381 = 0.279

AT THE HIGHER TEMP

P =0.279 X 714 =199ATM

Answer:

3

Explanation:

3

Answer:

Which line represents travel at the fastest speed? Justify your answer.__

b. Describe the line that should be added for an object that is not moving with respect to the chosen reference point.__

Answer the question using 5 complete sentences and the vocabulary terms; velocity, position, and distance

Which line represents travel at the fastest speed? Justify your answer.__

b. Describe the line that should be added for an object that is not moving with respect to the chosen reference point.__

Answer the question using 5 complete sentences and the vocabulary terms; velocity, position, and distance

Explanation:

Answer:

Ionic compounds are electrically neutral because the charges of the cations and anions that make up the compound cancel each other out. In the case of salt for example, sodium has a charge of positive one, and chloride has a charge of negative one. Together, they neutralize the compound.

Explanation:

Answer:

1s2 2s2 2p6 3s2 3p6 3d6 4s2

Explanation:

Answer:

1,2,3,4,8,9,10,12,14,15 and 16

Explanation:

Coz they have different kinds (colours) of atoms

The rest are pure substances,

I'm not so sure though, double check after this

Answer:

Prokaryotic / Eukaryotic

Answer:

A pure substance has a sharp melting point (melts at one temperature) and a sharp boiling point (boils at one temperature). A mixture melts over a range of temperatures and boils over a range of temperatures. Homogeneous mixtures are called solutions.

Answer:

What is it has fixed boiling point substance or mixture? A pure substance has a sharp melting point (melts at one temperature) and a sharp boiling point (boils at one temperature). A mixture melts over a range of temperatures and boils over a range of temperatures. Homogeneous mixtures are called solutions.

Explanation:

lol they got it from go ogle

Answer:

7 cm^3

Explanation:

Density = Mass/Volume

5 = 35/x

multiply both sides by x to get

5x = 35

then divide by 5

so x = 7 cm^3

Answer:

Freezing and condensation

Explanation:

Because they are exothermic, they release energy

Answer:

C. Tightly packed protons and neutrons

Explanation:

It consists of two sub-atomic particle namely proton and neutron.

This dense nucleus is responsible for most of the mass of atom.

Answer:

C. tightly packed protons and neutrons

Explanation:

The nucleus of an atom is made of protons and neutrons with electrons orbiting the nucleus.

Answer:

Fisica, Astronomia, Biologia

Explanation:

con esta relacion entre ellas se puede explicar y comprender fénomenos de la naturaleza.

Answer:

the bond that forms between carbon and oxygen to create carbon dioxide

A polar covalent bond

Answer:

c. chlorine, with an outer electron shell filled with 7 of a possible 8 electrons

Explanation:

Hope this helps!

The structure in the option A has 7 electrons in the outer shell of its electronic configuration , is unstable and so is most likely to form bond with another atom.

Electrons are arranged in various shells around the nucleus , this arrangement is called electronic structure or configuration.

Each shell can occupy certain fixed number of electrons.

Beside Option A , all the other configurations show stable structures as the last shell has eight electrons and are stable according to the octet rule.

The structure in the option A has 7 electrons in the shell and so is most likely to form bond with another atom.

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