electron configuration

Answer:

Explanation:

A titration in general is used to determine the concentration of something with a solution of known solution. For acid, a base solution of known concentration is added slowly. The end-point is determined by using a pH indicator. When the acid is neutralized at the end, note the amount of base solution used and the strength of acid can be calculated.

Note that the quantity of base solution utilised and the acid strength can be estimated after the acid has been neutralised.

Titration is a method of chemical analysis where the quantity of a sample's constituents is established by adding a precisely measured amount of something else with which the component that is wanted will react in a specific, known proportion.

A burette, which is essentially a long, graded measurement tube with a stopper and a tube for injection at its bottom end, is used to gradually administer a standard solution of titrating reagent, and titrant, to a specified concentration. When the point of equal value is achieved, the addition is terminated. Note that the quantity of base solution utilised and the acid strength can be estimated after the acid has been neutralised.

Therefore, note that the quantity of base solution utilised and the acid strength can be estimated after the acid has been neutralised.

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When three molecules of hydrocarbon, CH4 react with thirteen molecules of oxygen, O2 during a combustion reaction, the products formed are carbon dioxide (CO2) and water (H2O). This is the balanced reaction:
3 CH4 + 13 O2 → 3 CO2 + 6 H2O

In a combustion reaction, the fuel and oxidizing agent react in specific proportions to produce the products. For example, the combustion of methane (CH4) follows this balanced equation:
CH4 + 2 O2 -> CO2 + 2 H2O
Here, one molecule of methane reacts with two molecules of oxygen to form one molecule of carbon dioxide and two molecules of water. To determine the number of CO2 and H2O molecules formed when three fuel molecules react with thirteen O2 molecules, we must know the specific fuel being combusted and the balanced equation for the reaction, which is:
3 CH4 + 13 O2 → 3 CO2 + 6 H2O
Once the balanced equation is known, we can calculate the number of product molecules formed based on the provided reactant amounts, ensuring that the stoichiometric proportions are maintained.

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The concentration of salt in the tank when water starts to overflow is 12 grams per gallon.

To find the concentration of salt in the tank when water starts to overflow, we need to determine the amount of salt in the tank at that point and divide it by the total volume of water.

First, let's calculate the amount of salt that flows into the tank per minute:
8 grams of salt per gallon * 3 gallons per minute = 24 grams of salt per minute.

Next, let's calculate the amount of water that flows out of the tank per minute:
2 gallons per minute.

The net change in the volume of water in the tank per minute is:
3 gallons per minute - 2 gallons per minute = 1 gallon per minute.

Since the initial volume of water in the tank is 50 gallons and the net change in volume is 1 gallon per minute, the time it takes for the water to overflow is:
(100 gallons - 50 gallons) / 1 gallon per minute = 50 minutes.

Therefore, after 50 minutes, the tank will overflow.

To find the concentration of salt in the tank at that point, we need to calculate the total amount of salt in the tank after 50 minutes:
24 grams per minute * 50 minutes = 1200 grams.

The total volume of water in the tank is 100 gallons, and since the tank overflows after 50 minutes, the amount of water in the tank is 100 gallons.

Therefore, the concentration of salt in the tank when water starts to overflow is:
1200 grams / 100 gallons = 12 grams per gallon.

So, the concentration of salt in the tank when water starts to overflow is 12 grams per gallon.

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The given statement "the physical state of a reactant or product will affect the enthalpy of reaction in a thermochemical equation," is false.

The heat of reaction is influenced by the physical state of the reactants and products.

The term "thermochemical equation" refers to a balanced chemical equation that not only specifies the quantities of the various reactants and products but also the quantity of heat generated or absorbed.

A thermochemical equation may be written using fractional coefficients.

H2 ( g ) + ½ O2 ( g ) ⇒H2O ( l ) +285.8 KJ mol-1

H2 ( g ) + ½ O2 ( g ) ⇒ H2O ( l )  ΔH = – 285.8 KJ mol-1

When 1 mole of hydrogen and 0.5 mole of oxygen react, 285.8 KJ mol-1 of heat is produced. The heat generated will also double if the reactant amounts are doubled.

2H2 ( g ) + O2 ( g ) → 2 H2O ( l ) + 571.6 KJ mol-1

2H2 ( g ) + O2 ( g ) → 2H2O ( l ) ,ΔH = – 571.6 KJ mol-1

The heat of reaction, enthalpy of reaction, or enthalpy change of reaction is the quantity of heat that is evolved or absorbed in a chemical reaction once the number of moles of reactants as represented by the chemical equation have completely reacted.

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According to Charles' law, ff we squeeze and reduce the volume inside of a canister, the temperature will be reduced as well to maintain the constant.

Charles' law states that the volume of an ideal gas at constant pressure is directly proportional to the absolute temperature.

The mathematical expression is:

V/T = k

where,

If we squeeze and reduce the volume inside of a canister, the temperature will be reduced as well to maintain the constant.

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Because the molecules are more closely spaced, the solid occupies less space than the same substance when it is in a gaseous state.

Answer:A=1 B= 3 C=2

Explanation: if you put a 2 where C is then the amount will then change to P4O6. so therefore keeping the P4 on the left side the same will keep that same amount & putting a 3 with the O2 on the left will increase the amount for it to be equal on both sides.

hope that makes sense sorry!

Answer:

which energy?........

Explanation:

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

........

....

The correct answer is group I) HF, CH3CI, H2O, where all the molecules are polar.

The group of molecules in which all the molecules are polar is:

I) HF, CH3CI, H2O

In this group, all three molecules have a significant difference in electronegativity between the atoms, resulting in a polar covalent bond. HF (hydrogen fluoride) is a polar molecule due to the electronegativity difference between hydrogen and fluorine. CH3CI (chloromethane) is also polar because of the electronegativity difference between carbon and chlorine.

H2O (water) is a well-known polar molecule due to the electronegativity difference between oxygen and hydrogen atoms.

The other groups listed (II, III, IV, V) contain at least one molecule that is not polar:

- II) N2 (nitrogen gas) is nonpolar as it consists of two nitrogen atoms with identical electronegativity.

- III) O2 (oxygen gas) is nonpolar for the same reason as N2, and SIHCl3 (silicon tetrachloride) is nonpolar due to its symmetrical tetrahedral shape.

- IV) CCl4 (carbon tetrachloride) is nonpolar due to its tetrahedral shape and symmetrical distribution of charge, while HCI (hydrogen chloride) is polar.

- V) HF is polar, but CH4 (methane) is nonpolar as it has a symmetrical tetrahedral shape with the same electronegativity for all atoms.

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3.6 ×10²⁴ atoms fluorine are in 410 g of UF\(_6\). Fluorine is an atomic number 9 chemical element with both the symbol F.

Fluorine is an atomic number 9 chemical element with both the symbol F. This is the smallest halogen as well as occurs as a very poisonous, pale yellow diatomic vapor under normal circumstances.

It is exceptionally reactive being the most electronegative active catalyst, reacting with all other elements save the light inert.

mole =  410 / 352.02 =1.16mole

number of atom= 1.16× 6.022×10²³=6.98×10²³

number of atom of fluorine =6× 6.98×10²³= 3.6   ×10²⁴ atoms

Therefore, 3.6 ×10²⁴ atoms fluorine are in 410 g of UF\(_6\).

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Answer:

a 0.22L

Explanation:

Answer:

A

Explanation:

1 moles of oxygen is 0.044L

Answer:

Potential energy to kinectic energy

Explanation:

A buffer is made by dissolving HC₂H₃O₂ and NaC₂H₃O₂ In water. The equation that shows how this buffer neutralise  acid added is

H⁺ + CH₃COO⁻ ⇄ CH₃COOH. The equation that shows how this buffer neutralises added base is H⁺ +OH⁻  ⇄ H₂O

Processes of dissociation in the solution containing weak CH₃COOH acid and its salt:

CH₃COOH ⇄ H⁺ + CH₃COO⁻                   Ka = 1.8 X 10⁻⁵

CH₃COONa ⇄ Na⁺ + CH₃COO⁻

At addition of acid in solution ions of hydrogen comunicate in weak acid:

H⁺ + CH₃COO⁻ ⇄ CH₃COOH.

At addition of the basis in solution ions of hydroxide comunicate in weak electrolyte - water: H⁺ +OH⁻  ⇄ H₂O

Therefore, the equation that shows how this buffer neutralise  acid added is H⁺ + CH₃COO⁻ ⇄ CH₃COOH. The equation that shows how this buffer neutralises base added  is H⁺ +OH⁻  ⇄ H₂O

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The amount of heat released by the production of 1.0 mole of SO3(g) is 196 kJ.

To determine the amount of heat released by the production of 1.0 mole of SO3(g), we need to first balance the chemical equation:

2SO2(g) + O2(g) = 2SO3(g) + 392 kJ

Now, we can see that 2 moles of SO3 are produced by releasing 392 kJ of heat. To find the heat released for 1 mole of SO3, we can set up a proportion:

(392 kJ) / (2 moles of SO3) = x kJ / (1 mole of SO3)

Solving for x:

x = (1 mole of SO3) * (392 kJ) / (2 moles of SO3)
x = 196 kJ

So, the amount of heat released by the production of 1.0 mole of SO3(g) is 196 kJ.

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Answer:   Because planets do not have nuclear fusion, they do not produce their own light. Instead, they shine with light reflected from a star. When we see planets in the night sky, such as Venus, the so-called "Evening Star," we're seeing reflected sunlight.

Explanation:

44.8L

In order to get the volume of the gas that would be occupied by two moles of propane gas, we need to first calculate the mass of two moles of propane gas.

Determine the required mass of propane

At standard temperature and pressure (STP)

44g of the gas will occupy 22.4L volume. Hence 88g of propane gas will occupy:

Therefore the volume that would be occupied by two moles of propane gas, C3H8, at standard conditions is 44.8L.

Answer:

Cu3PO4

Explanation:

There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, Cu\(_3\)PO\(_4\) is the formula for copper(I) phosphate(v).

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

An ionic compound is a metal and nonmetal combined compound.  Ionic compound are very hard. They have high melting and boiling point because of strong ion bond. Cu\(_3\)PO\(_4\) is the formula for copper(I) phosphate(v). Cu\(_3\)PO\(_4\) is an ionic compound with cation Cu⁺¹ and anion as PO₄³⁻.

Therefore, Cu\(_3\)PO\(_4\) is the formula for copper(I) phosphate(v).

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Answer:

Yes. As soon as acceleration disappears, the object just continues with whichever speed it has. The acceleration changes speed; is there no acceleration, then speed is constant.

Explanation:

Dry bulk terminals typically handle a wide range of minerals. Here are some common types of minerals processed at dry bulk terminals: Coal, Iron ore, Bauxite, Limestone, Gypsum, Phosphate rock, Salt, Silica sand, Copper concentrate and Zinc concentrate.

1. Coal: A combustible sedimentary rock composed primarily of carbon. It is a valuable energy resource used for power generation and industrial purposes.

2. Iron ore: A rock containing iron minerals that can be extracted and processed to produce iron and steel. It is an essential raw material for the metallurgical industry.

3. Bauxite: A sedimentary rock rich in aluminum minerals. Bauxite is the primary source of aluminum and is processed to extract alumina, which is further refined to produce aluminum metal.

4. Limestone: A sedimentary rock composed mainly of calcium carbonate. Limestone is used in the production of cement, as a flux in metallurgical processes, and as a building material.

5. Gypsum: A mineral composed of calcium sulfate dihydrate. Gypsum is used in the production of plaster, wallboard, and as a soil amendment.

6. Phosphate rock: A mineral used in the production of fertilizers. It contains phosphorus compounds necessary for plant growth.

7. Salt: Sodium chloride or halite is a mineral processed for various industrial applications, including chemical production, water treatment, and food processing.

8. Silica sand: A high-purity form of sand composed mainly of silica. It is used in glass manufacturing, foundries, and as a proppant in hydraulic fracturing.

9. Copper concentrate: A product of copper mining, containing a high percentage of copper along with other valuable minerals. It is processed to extract copper metal.

10. Zinc concentrate: A product of zinc mining, consisting of zinc minerals and other impurities. It is processed to extract zinc metal.

These are just a few examples, and there are many other types of minerals processed at dry bulk terminals depending on regional resources and industrial needs.

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answer

C) is the answer ⟵(๑¯◡¯๑)

With the formula NH3, ammonia is a nitrogen and hydrogen inorganic chemical.

Thus, Ammonia, the simplest pnictogen hydride and a stable binary hydride, is a colourless gas with a strong, pungent odour. It contributes considerably to the nutritional demands of terrestrial creatures by serving as a precursor to 45% of the world's food and fertilizers.

Biologically, it is a common nitrogenous waste, especially among aquatic animals.

The production of fertilizers in a variety of shapes and compositions, including urea and diammonium phosphate, uses about 70% of ammonia.

Thus, With the formula NH3, ammonia is a nitrogen and hydrogen inorganic chemical.

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A reaction that requires energy would be spontaneous.

A spontaneous process is one in which we can proceed without additional input of energy releasing free energy and then moves to a lower more stable thermodynamical state.

Therefore, A reaction that requires energy would be spontaneous process. (option b)

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The strongest intermolecular forces present between these molecules includes London dispersion forces hydrogen bonding and dipole dipole forces.

Intermolecular forces are the force that are responsible for keeping the molecule is stable.

There are Several kind of intermolecular forces like dipole-dipole forces, London-dispersion forces, hydrogen-bonding etc.

In the given compound the strongest intermolecular forces present for each of the molecule is,

Hydrogen (H) London dispersion forces

Carbon monoxide (CO) London dispersion forces

Silicon Tetrafluoride (SiF₄) London dispersion forces

Nitrogen tribromide(NBr₃) dipole dipole forces

Water (H₂O) hydrogen bonding

Acetone (CH₂O) dipole dipole forces

Methane (CH₄) London dispersion forces

Benzene (C₆H₆) London dispersion forces

Ammonia (NH₃) hydrogen bonding

Methanol (CH₃OH) hydrogen bonding.

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The fluid-filled interior compartment of the thylakoid network is referred to as the: Lumen

The thylakoid lumen is an aqueous phase that is continuously enclosed by the thylakoid membrane. It is essential for photophosphorylation during photosynthetic activity. Protons are hyped across the thylakoids into the lumen during the light-dependent reaction, making it acidic down to pH 4. The lumen in the chloroplast is referred to as the stroma. The stroma is the whitish fluid that surrounds the grana (thylakoids stacks) within the chloroplast. A lumen is the chloroplast membrane that surrounds space. Light energy is captured by photosystems found in thylakoid membranes. The thylakoid membrane contains enzymes required for photosynthesis's light-dependent reactions. Hydrogen ions are pumped into the thylakoid space, or lumen, during these reactions.The thylakoid space has an acidic pH due to the high concentration of hydrogen ions.

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1. The reaction would shift towards the left

2. The reaction would shift to the right

3. The reaction would shift to the right

4. The system would shift to the left

5. The reaction would move to the left

6. The reaction would move to the right

According to the Le Châtelier's principle, a system in equilibrium will adjust its equilibrium position in a way that tends to counteract any forced change when it is exposed to a change in temperature, pressure, or the concentration of reactants or products.

In other words, if a system is out of equilibrium, it will make adjustments to try to get back into balance.

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In the titration of a 35.0 mL sample of 0.175 M HBr with 0.200 M KOH, the quantities are approximately 0.006125 moles of HBr and KOH, and 30.6 mL of KOH solution is required for complete reaction.

To determine each quantity in the titration of a 35.0 mL sample of 0.175 M HBr with 0.200 M KOH, we can use the concept of stoichiometry and the equation of the reaction between HBr and KOH:

HBr + KOH → KBr + H₂O

The number of moles of HBr in the 35.0 mL sample can be calculated using the formula:

moles HBr = Molarity * Volume (in liters)

moles HBr = 0.175 mol/L * 0.035 L

moles HBr ≈ 0.006125 mol

Since the balanced equation shows that the ratio between HBr and KOH is 1:1, the number of moles of KOH required for complete reaction is also 0.006125 mol.

The volume of 0.200 M KOH required can be calculated using the formula:

Volume KOH = moles KOH / Molarity

Volume KOH = 0.006125 mol / 0.200 mol/L

Volume KOH ≈ 0.0306 L

Converting the volume to milliliters:

Volume KOH ≈ 30.6 mL

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As we know, Number of protons = Atomic Number

So,

And, Atomic mass = Number of protons + Number of Neutrons (N)

therefore ~

Number of Neutrons = 19

Answer:

In a titration, you determine an unknown concentration of a sample by adding a second reactant of known concentration. In many titrations, you use a chemical called an indicator, which lets you know when the titration finishes.

Explanation: