How does the bond formed determine the physical and chemical characteristics of the compounds and molecules formed?

Answer:

........................................

Answer:

Because according to VSEPR theory lone pair occupies more space than bond pair.

Explanation:

Lone pair of electrons repels from bonded pair of electrons than that between bond pair of electrons itself. Hence, molecules attain a geometry in which the repulsive force is minimum.

The lone pair of electrons are pair of electrons which are not involved in bonding in any occasion but can be donated through coordinate bonds in some compounds.

Oxygen, nitrogen  etc. contains lone pair of electrons. According to VSEPR theory, the lone pair -lone pair repulsion > lone pair -bond pair > bond pair-bond pair repulsion.

Therefore, these electron pairs are aligned around the central atom in such a way that the repulsive force between the electron clouds are minimized.

For example, if consider hybridization of water molecule, it must acquire a tetrahedral  shape, but the lone pairs will align axial  and will assume a bent shape.

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Answer:

The Solar System moves through the galaxy with about a 60° angle between the galactic plane and the planetary orbital plane. The Sun appears to move up-and-down and in-and-out with respect to the rest of the galaxy as it revolves around the Milky Way

Explanation:

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Fertilizers supplement the soil with macronutrients needed in large amounts: nitrogen, phosphorous and potassium. ... Inorganic fertilizer, also referred to as synthetic fertilizer, is manufactured artificially and contains minerals or synthetic chemicals. so no

Explanation:

Answer: Sediment Transport by Wind

Explanation: Like flowing water, wind picks up and transports particles. Wind carries particles of different sizes in the same ways that water carries them (Figure below). Tiny particles, such as clay and silt, move by suspension. They hang in the air, sometimes for days.

Answer:

The log will float on the water because its density is lower than the liquid, so it will stay at the top due to Archimedes' principle.

Answer:

B: It will float.

Explanation:

on edge2021! hope this helps!!~ (=^▽^=)

Answer:

1.46 mol

Explanation:

Given data:

Moles of bromine gas produced = ?

Mass of potassium bromide = 347.5 g

Solution:

Chemical equation:

2KBr  +  F₂   →  2KF + Br₂

Number of moles of KBr:

Number of moles = mass/ molar mass

Number of moles = 347.5 g/ 119.0 g/mol

Number of moles = 2.92 mol

Now we will compare the moles of KBr and bromine.

                  KBr       :     Br₂

                    2         :      1

                   2.92    :       1/2×2.92 = 1.46 mol

For your question about diagram it is definitely A

Answer:

A

Explanation:

Answer:

7. 5km/h

8. 10km/h

I just need to add characters so i can post

Answer:

2AlF₃ + 3Li₂O —> Al₂O₃ + 6LiF

Explanation:

AlF₃ + Li₂O —> Al₂O₃ + LiF

The above equation can be balanced as follow:

AlF₃ + Li₂O —> Al₂O₃ + LiF

There are 2 atoms of Al on the right side and 1 atom on the left side. It can be balance by writing 2 before AlF₃ as shown below:

2AlF₃ + Li₂O —> Al₂O₃ + LiF

There are 6 atoms of F on the left side and 1 atom on the right side. It can be balance by writing 6 before LiF as shown below:

2AlF₃ + Li₂O —> Al₂O₃ + 6LiF

There are 2 atoms of Li on the left side and 6 atoms on the right side. It can be balance by writing 3 before Li₂O as shown below:

2AlF₃ + 3Li₂O —> Al₂O₃ + 6LiF

Thus, the equation is balanced..!

The molarity of a Sodium carbonate solution : 0.373 M

Given

32.52 g Na₂CO₃

822 ml of solution = 0.822 L

Required

The molarity

Solution

Molarity shows the number of moles of solute in every 1 liter of solution.

[tex]\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}[/tex]

mol of solute = mol of Na₂CO₃ :

= mass : MW Na₂CO₃

= 32.52 g : 106 g/mol

= 0.307

Molarity :

= n : V

= 0.307 mol : 0.822 L

= 0.373 M

Answer:

B

Explanation: hoped this helped!!!

Answer:

it is c no cap

Explanation: C

Half reaction :

Oxidation

Cu ⇒ Cu²⁺ + 2e⁻

Reduction

2Ag⁺+ 2e⁻ ⇒2Ag  

Given

Reaction

Cu+2AgNO₃⇒Cu(NO₃)₂+2Ag

Required

Oxidation and reduction half-reactions

Solution

Oxidation is an increase in oxidation number, while reduction is a decrease in oxidation number.

Cu ⇒ Cu²⁺ + 2e⁻

0 to +2

2Ag⁺+ 2e⁻ ⇒2Ag  

+1 to 0

Answer:

2. Periods

Explanation:

The elements are arranged in seven horizontal rows, called periods or series, and 18 vertical columns, called groups. ... Elements in the periodic table are organized according to their properties.

Answer: Fe

Explanation: Fe (Iron) is the only element since it involves only 1 atom. The other options are compounds, since there are more than 2 atoms bonded together.

MgSO₄•8H₂O

Magnesium sulfate octahydrate

Given

7.820 g of Magnesium sulfate (MgSO₄ • xH₂O)

3.547 g of anhydrous magnesium sulfate

Required

The formula

Solution

Mass of H₂O :

= 7.820 g - 3.547 g

= 4.273 g

MW MgSO₄=120 g/mol

MW H₂O = 18 g/mol

Mol ratio MgSO₄ : H₂O

= 3.547/120 g/mol : 4.273/18

= 0.0295 : 0.2374

= 1 : 8

The formula :

MgSO₄•8H₂O

Magnesium sulfate octahydrate

Answer:

Mass =  44.2 g  

Explanation:

Given data:

Mass of nitrogen reacted = 36.2 g

Mass of ammonia formed =?

Solution:

Chemical equation:

N₂ + 3H₂    →    2NH₃

Number of moles of nitrogen:

Number of moles = mass/molar mass

Number of moles = 36.2 g / 28 g/mol

Number of moles = 1.3 mol

Now we will compare the moles of nitrogen and ammonia from balanced chemical equation to determine how many moles of ammonia re formed.

                        N₂         :         NH₃

                        1            :          2

                       1.3          :         2/1×1.3 = 2.6 mol

Mass of ammonia:

Mass = number of moles × molar mass

Mass = 2.6 mol × 17 g/mol

Mass =  44.2 g  

Answer:

e is right ▶️▶️▶️▶️▶️▶️▶️

D. Atoms form millions of molecules. :)

Answer:

As I guess ans to yr question is D. Atoms from millions of molecules.

Answer:

C. 0.1 mol of V₂O₅

Explanation:

Number of moles of oxygen atoms present in each molecule is derived as follows:

A. Number of molecules of CO₂ in 12.044 * 10²³ molecules of CO₂ = 12.044 * 10²³/6.022 * 10²³ = 2 moles of CO₂ molecules

Each molecule of CO₂ contains 2 atoms of oxygen. Therefore, number of moles of oxygen atom present in 2 molecules of CO₂ = 2 * 2 moles of oxygen atoms = 4 moles of oxygen atoms.

B. Number of moles of O₃ molecules in 12g of O₃ = mass of O₃/molar mass of O₃

molar mass of O₃ = 48 g/mol

Number of  moles of O₃ molecules = 12/48 = 0.25 moles of O₃

There are 3 atoms of oxygen in a molecule of O₃, therefore number of moles of oxygen atoms present in 12 g of O₃ = 3 * 0.25 = 0.75 moles of oxygen atoms

C. There are 5 oxygen atoms in a molecule of V₂O₅

0.1 mol of V₂O₅ contains 0.1 * 5 moles of oxygen atoms = 0.5 moles of oxygen atoms.

D. mass of 10 mL of H₂O = 10 g since the density of H₂O = 1 g/mL

molar mass of H₂O = 18.0 g/mol

Number of moles of H₂O in 10 g of H₂O = 10/18 = 0.56 moles

There are 1 atom of oxygen in a molecule of H₂O, therefore, number of moles of oxygen present in 10 g of H₂O = 0.56 * 1 = 0.56 moles of oxygen atoms

Therefore, 0.1 mole of V₂O₅ contains the least number of oxygen atoms.

Answer:

im 14 years old.

Explanation:

the force that pulls falling objects is gravity.

Answer:

Sodium has an atomic number of 11 while potassium has an atomic number of 19

• Despite smaller atomic number, sodium is denser than potassium

• Potassium reacts much more violently with water

• While excess of sodium is harmful for us, low levels of potassium have also been found to be associated with certain disorders of lungs and heart.

Explanation:

found this on the internet

Answer:

If someone is suffering from the problem of acidity after overeating Baking soda solution would be suggested as a remedy as it is basic in nature, it neutralises excess acid in the stomach.

Answer:

A solution is consist of solute and solvent and they both together determine the properties of complete solution. It is important to know the properties of both solute and solvent because they both depend on each other to meet a certain need, for example: the intermolecular forces between solutes and solvents determine the solubility of solute in solvent and if solutes must be completely dissolved in the solvent for a homogenous mixture.

The combination of solute and solvent to form a solution is a physical process and not a chemical one because it des not change the chemical properties of solute and solvents.

%C = 40

%H = 6.67

%O = 53.33

Given

Glucose  C₆H₁₂O₆

Required

The percent composition

Solution

MW Gulucose = 180 g/mol

Ar C = 12 g/mol

Ar H = 1 g/mol

Ar O = 16 g/mol

%C = 6.12/180 x 100% = 40%

%H = 12.1/180 x 100% = 6.67%

%O = 6.16/180 x 100% = 53.33%

Answer:

The moving train

Explanation:

Kinetic energy is energy being used right now. So, the only object using energy right now is the moving train

Good luck on the rest of the test!

Answer:

b. heat energy

Explanation:

The domino at the end of the row move should be heat energy.

Heat energy refers to the energy where it leads to the small particles movement. It can be treated as the atoms, molecules, etc. Also, the one object to other object should be shifted in this. Since the student placed one hundred dominoes upright in a row so here the heat energy should be used.

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Since water does not have charged particles, water is a non-conductor. When some solutes dissolve in water they allow an electric current to flow through the water and the solution conducts electricity. These solutes are called electrolytes. ... Non-electrolytes like sugar dissolve to form molecules in solution.