Draw and name all the isomers of the alkene C4H8

Answers

Answer 1

Answer: ....H....H....H....H
....|.....|…..|…..|
H-C==C----C----C-H
.....….....…..|.....|
.................H.....H
butan-1-ene/butene/but-1-ene

....H....H....H....H
....|.....|…..|…..|
H-C----C==C----C-H
....|….....…........|
....H..................H
butan-2-ene/but-2-ene
These are the structural isomers of butene.The geometric isomers include trans-but-2-ene and cis-but-2-ene.
HOPE THIS HELPS *WINK*

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A scientist would most likely need to update her model when?

Answers

A scientist would most likely need to update his / her model when it no longer supports the latest results. This could mean that the scientist's model is shrinking or growing, thus, he / she has to update them. Updating them would also make the model appear more interesting.

Which formula represents a nonpolar molecule containing polar covalent bonds?(1) H2O (3) NH3
(2) CCl4 (4) H2

Answers

H2O and NH3 are polar molecules. H2 is a nonpolar molecule but the H-H bond is also nonpolar.
Therefore, the best choice is CCl4. Although the C-Cl bond is polar due to electronegativity differences, the molecule itself is nonpolar because the net dipole moments cancel out, given its tetrahedral molecular structure.

$\boxed{\left( 2 \right){\text{ CC}}{{\text{l}}_4}}$ represents a nonpolar molecule containing polar covalent bonds.

Further Explanation:

The chemical bond is the attraction between atoms, molecules or ions that is responsible for the formation of chemical compounds. It is formed either due to electrostatic forces or by the sharing of electrons.

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A covalent bond is a bond formed by the mutual sharing of electrons between the bonded atoms. It is also known as a molecular bond. Such bonds usually exist between two or more non-metals.

Types of covalent bonds:

1. Polar covalent bond

This bond results from the presence of electronegativity difference between the bonded atoms. For example, the bond between hydrogen and chlorine in HCl is a polar covalent bond. In this molecule, Cl is more electronegative than H.

2. Non-polar covalent bond

When there is no or very small electronegativity difference between the bonded atoms, non-polar covalent bond is formed. Here, the net dipole moment of the molecule comes out to be zero. For example, bond between carbon and hydrogen in ${\text{C}}{{\text{H}}_{\text{4}}}$ is a non-polar covalent bond.

3. Coordinate covalent bond

When both the shared electrons are provided by the same atom, coordinate covalent bond is formed. This usually exists when metals are bonded with ligands. For example, the bond formed between cobalt and ammonia in case of hexamminecobalt (III) chloride is a coordinate covalent bond.

(1) ${{\text{H}}_{\text{2}}}{\text{O}}$

Oxygen is more electronegative than carbon so the bond between O and H is polar covalent bond. But this molecule has some net dipole moment due to its asymmetry so water molecule is a polar molecule. Therefore this option is incorrect. (For structure, refer to the attached image).

(2) ${\text{CC}}{{\text{l}}_{\text{4}}}$

Chlorine is more electronegative than carbon so the bond between C and Cl is a polar bond. But the net dipole moment of this molecule comes out to be zero. So ${\text{CC}}{{\text{l}}_{\text{4}}}$ is a nonpolar molecule with polar covalent bonds and therefore this option is correct. (For structure, refer to the attached image).

(3) ${\text{N}}{{\text{H}}_{\text{3}}}$

Nitrogen is more electronegative than hydrogen so the bond between N and H is polar covalent bond. But this molecule has some net dipole moment due to its asymmetry so ammonia molecule is a polar molecule. Therefore this option is incorrect. (For structure, refer to the attached image).

(4) ${\text{N}}{{\text{H}}_{\text{3}}}$

It contains two hydrogen atoms in it. There is no electronegativity difference between both atoms and therefore this molecule is nonpolar in nature. Moreover the bond between two hydrogen atoms is also non-polar. Therefore this option is incorrect. (For structure, refer to the attached image).

Learn more:

Identification of ionic bonding: brainly.com/question/1603987
What type of bond exists between phosphorus and chlorine? brainly.com/question/81715

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Ionic and covalent compounds

Keywords: polar, nonpolar, correct, incorrect, H2, CCl4, H2O, NH3, electronegativity difference, hydrogen atoms, asymmetry, dipole moment.

What is the gram formula mass of Ca3(PO4)2

Answers

Mass Molar of $Ca_(3) (PO_4)_2$
Ca = 3*40 = 120 amu
P = 2*31= 62 amu
O = (16*4)*2 = 64*2 = 128 amu
--------------------------------------
Mass Molar of $Ca_(3) (PO_4)_2$ = 120 + 62 + 128 = 310 g/mol

Therefore: What is the gram formula mass of Ca3(PO4)2 ?
Answer: 310 grams

Is freshwater drum a consumer

Answers

Yes, It eats meats and is a bottom feeder. !

Alai is comparing the physical property of two materials. He is hitting each with a hammer to observe what happens. What physical property of the materials is Alai most likely observing?a)solublity
b)conductivity
c)hardness
d)odor

Answers

Since Alai is hitting each with a hammer, the physical property which he must be comparing on the two materials must be hardness. Solubility can be tested when you put them in a solvent. Odor can be tested with smell. Conductivity can be tested with electricity. Hardness can be tested with its resistance to the force that hits it.

Alai is hitting each with a hammer, the physical property which he must be compared the two materials must be hardness.

What is a physical property?

A physical property is a characteristic of matter that is not associated with a change in its chemical composition. Familiar examples of physical properties include density, colour, hardness, melting and boiling points, and electrical conductivity.

Alai is hitting each with a hammer, the physical property which he must be compared to the two materials must be hardness.

Solubility can be tested when you put them in a solvent.

Odour can be tested with a smell.

Conductivity can be tested with electricity. Hardness can be tested with its resistance to the force that hits it.

Hence, Alai is comparing hardness.

Learn more about a physical property here:

brainly.com/question/1348773

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An atom has an atomic number of 12 and a mass number of 25. How many neutrons does the atom have?12
13
25
37