Will the 90-100 mL of distilled water added to the acid solution (10.00 mL) significantly change the moles of H3O+ in the 1.00 M HCl solution? Why or why not?

Answer:

plants or The Cell Theory

Explanation:

The valence-shell configuration of the metallic element M in Period 4 is 4s2 4p6.

What is the valence-shell configuration of the metallic element M in Period 4?

The valence-shell configuration refers to the arrangement of electrons in the outermost shell, or valence shell, of an atom. In Period 4, the valence shell of the metallic element M would be the fourth shell, denoted as the 4s and 4p orbitals.

The electron configuration of an element is determined by the position of the element in the periodic table. Since M is in Period 4, we know that it has four electron shells. The valence electrons are those located in the outermost shell, which determine the element's chemical properties and reactivity.

In this case, the valence-shell configuration of M is given as 4s2 4p6, indicating that there are two electrons in the 4s orbital and six electrons in the 4p orbitals. The total number of valence electrons can be calculated as the sum of the electrons in the valence orbitals, which in this case is 8.

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If 120 cm³ of oxygen gas is collected at 713.3 mm Hg pressure, the volume of the dry gas at STP is 0.102 cm³.

To solve this problem, we will use the ideal gas law, which relates the pressure, volume, temperature, and number of moles of a gas:

PV = nRT

First, we need to convert the given conditions to the correct units. The temperature is already in Celsius, so we need to convert it to kelvins by adding 273.15:

T = 27 + 273.15 = 300.15 K

The pressure is given in millimeters of mercury (mm Hg), so we need to convert it to atmospheres (atm) to use in the ideal gas law. There are 760 mm Hg in 1 atm, so:

P = 713.3 mm Hg / 760 mm Hg/atm = 0.938 atm

Next, we can use the ideal gas law to find the number of moles of oxygen gas:

n = PV/RT = (0.938 atm)(120 cm³)/(0.08206 L·atm/(mol·K))(300.15 K) = 0.00454 mol

Finally, we can use the molar volume of a gas at STP (standard temperature and pressure) to find the volume of the dry gas at STP. At STP, the temperature is 273.15 K and the pressure is 1 atm. The molar volume of a gas at STP is 22.4 L/mol, so:

V = n(22.4 L/mol) = (0.00454 mol)(22.4 L/mol) = 0.102 cm³

Therefore, the volume of the dry gas at STP is 0.102 cm³.

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Answer :The reason why compression is more difficult is a direct illustration of quantum mechanics.

The ionic compound between each pair of elements has the following formula:

(a) Al₂S₃

(b) AlN

(c) K₂O

(d) SrI₂

(e) MgO

(f) BaF₂

(g) SrS

(h) Be₃N₂

The formula for the ionic compound for each pair is:

(a) Aluminium and Sulfur

Aluminum sulfide, also known as Al₂S₃, is created when aluminum and sulfur combine. Its molar mass is 150.158 g/mol. Al has a +3 oxidation state while the sulfur in Al₂S₃ is in a -2 oxidation state.

Al⁺³ + S⁻² → Al₂S₃

(b) Aluminium and Nitrogen

Solid aluminum nitride is known as aluminum nitride (AlN). It is an electrical insulator with high thermal conductivity of up to 321 W/(mK).

Al⁺³ + N⁺³ → AlN

(c) Potassium and Oxygen

When potassium and oxygen are combined, potassium oxide results as an ionic molecule. It has the chemical composition K₂O. Because it is highly reactive, potassium cannot be found in its free form. It easily forms K₂O when combined with oxygen atoms due to its +1 valency.

( K₂ )⁺¹ + O²⁻ → K₂O

(d) Strontium and iodine

Ions of strontium and iodide combine to form the ionic compound known as strontium iodide.

Strontium has the chemical symbol Sr and a valency of +2. Iodine also bears the symbol I and the valency of -1.

(Sr)⁺² + I⁻¹ → SrI₂

(e) Magnesium and Oxygen

Magnesium oxide MgO) is created through the ionic interaction of magnesium (Mg) with oxygen (O₂). While oxygen has six valence electrons, magnesium only has two.

Mg⁺² + O²⁻ → MgO

(f) Barium and Fluorine

Because it is made up of a barium cation with a +2 charge and a fluoride anion with a charge of 1, barium fluoride is an ionic compound. This substance has the chemical formula BaF₂.

Ba²⁺ + F⁻¹ → BaF₂

(g) Strontium and Sulfur

Strontium serves as the anion and sulfur is the cation. Due to its presence in Group II, strontium has a valency of 2. The sulfur atom will gain 2 electrons and currently has 6 electrons in its outermost shell. Sulfur's valency is therefore 2.

Sr⁺² + S²⁻ → SrS

(h) Beryllium and Nitrogen

Because nitrogen is a non-metal and beryllium is a metal, an ionic link is created between the two. Be₃N₂ is formed when Beryllium and nitrogen is reacted.

Be²⁺ + N³⁻ → Be₃N₂

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The complete question is mentioned below:

Write a formula for the ionic compound that forms between each pair of elements.

a. Aluminum and Sulfur

b. Aluminum and Nitrogen

c. Potassium and Oxygen

d. strontium and iodine

e. magnesium and oxygen

f. barium and fluorine

g. strontium and sulfur

h. beryllium and nitrogen

Answer:

The beginning

Explanation:

In a nuclear reaction, the  rate of decay is fastest at the beginning of the process.

There are two types of nuclear reactions which are nuclear fusion and nuclear fission .They involve the combination and disintegration of the element's nucleus respectively.

In nuclear fission, the nucleus of the atom is bombarded with electrons of low energy which splits the nucleus in to two parts .Large amount of energy is released in the process.It is used in nuclear power reactors as it produces large amount of energy.

In nuclear fusion,on the other hand, is a reaction which occurs when two or more atoms combine to form a heavy nucleus.Large amount of energy is released in the process which is greater than that of the energy which is released in nuclear fission process.

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Answer:

a. 3.00 mol Al = 3.00 x 27.0 g/mol = 81.0 g

b. 2.56 × 10^24 atoms Li = 2.56 × 10^24 x 6.939 g/mol = 17.75 g

c. 1.38 mol N = 1.38 x 28.0 g/mol = 38.64 g

d. 4.86 × 10^24 atoms Au = 4.86 × 10^24 x 197.0 g/mol = 961.3 g

e. 6.50 mol Cu = 6.50 x 63.5 g/mol = 410.75 g

f. 2.57 × 10^8 mol S = 2.57 × 10^8 x 32.1 g/mol = 82,567,600 g

g. 1.05 × 10^18 atoms Hg = 1.05 × 10^18 x 200.6 g/mol = 210,000 g

Answer:

True. The term is mechanic / kinetic energy.

Answer:

your answer should be True.

Energy is the performance of work.

Explanation:

Answer:

to study sub terranian earth movements

Explanation:

8H earth science

Answer:

B-to determine the location of an epicenter

Explanation:

Seismologists study earthquakes by going out and looking at the damage caused by the earthquakes and by using seismographs. A seismograph is an instrument that records the shaking of the earth's surface caused by seismic waves and determine the location of an epicenter

-Source: Geo.mtu.edu

The molarity of the KCl solution is 4.04 moles/ litre

Molarity (M), which is determined by dividing the solute's mass in moles by the volume of the solution in liters, is the most widely used unit to express solution concentration: liters of solution/moles of solute equals M. One liter of a solution with a 1.00 molar concentration (1.00 M) contains 1.00 moles of solute.

The amount of a substance in a specific volume of solution is known as its molarity (M). The number of moles of a solute per liter of a solution is known as molarity. The molar concentration of a solution is another name for molarity.

Molarity = no. of moles/ volume of solution

Volume of KCl solution given is 0.25 L

molarity = 1.01 / 0.25

molarity = 4.04 moles/ litre

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Answer:

B

Explanation:

because protons have a +1 charge and electrons have a -1 charge, so if an atom is neutral it must have the same amount of protons and neutrons

Answer:

It's a combination reaction

\( \underline{ \underline{ \texttt{Combination reaction }}}\)

What is combination reaction?

a reaction in which two reactants combine to form one product.

Why is it combination reation?

As you can see phosphorus and oxygen combined to form Phosphorus trioxide.

Answer:

It took a while but i'm pretty sure its 1.3981717 units.

Explanation:

Answer:

Hello calcium maintains healthy bones and muscles. Zinc is for immune function. Iron carrier oxygen to blood. Sodium maintains fluid balance in the body.

Answer: Zinc : plays a role in immune system function

Iron: carries oxygen to all body tissues

Calcium: Maintains healthy bones and muscles

Sodium: maintains fluid balance in the body

Explanation: Got it right on PLATO/edmentum

Answer:

there is one carbon atom and there are two oxygen atoms. So, in total there are three atoms.

Explanation:

Answer:

80 degrees

Explanation:

if you think about it 80 degrees is hotter than 20 degrees if I'm not right tell me in the comments please

It can be argued that the decrease in ATP concentration will be larger when using 2-deoxyglucose than when using cyanide.

When cyanide is introduced into the organism, it binds to the cytochrome C oxidase protein in the complex IV of the electron transport chain, inhibiting the entire mechanism and stopping the process of ATP production, thus depriving the organism of the 34 ATP molecules produced.

2-deoxyglucose, on the other hand, is transformed to 2-deoxyglucose-6-phosphate and immediately inhibits the entire glycolysis process so not even the 4 ATP molecules gained through glycolysis and Krebs cycle cannot be acquired, denying the entire 38 ATP molecules to the organism.

However, it should be noted that, while glycolysis is an important mechanism for acquiring NADH and FADH2 needed for ETC, they can be gained through other processes, such as oxidative lipid degradation, and cyanide makes that pathway unusable as well.

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The correct answers from the task given above which are true about part of the safety protocol for this lab experiment are as follows:

Safety protocols in the scientific laboratory are those safety measures and precautions which are usually adviced to be taken to ensure one's well being and protection from danger.

From the problem given above, It is very important to always label correctly the species of reagents or any glassware used in the laboratory.

In conclusion, we can now confirm from all the explanations above that it is very expedient that we observe all safety measures while performing experiment in the laboratory.

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Answer:

here ya go- I made the mistake of believing the person whose answer is above me.

Explanation:

Answer:

Electrons - 20

protons - 22

neutrons - 26

Explanation:

Titanium has an atomic number of 22 indicating that the neutral atom has 22 protons.

Ti 2+ has lost two electrons and contains only 20 electrons, 22 protons.

The mass number of titanium is 48. Hence;

Mass number = atomic number + number of neutrons

Since the atomic number is 22 and the mass number is 48

number of neutrons = 48 - 22 = 26 neutrons

PI2 ≈ 7.4 torrPI2 ≈ 7.4 torrs because it is directly proportional to the initial pressure of HIHI.

At equilibrium, the forward and reverse reactions occur at the same rate. Once equilibrium is reached, the amounts of each reactant and product remain constant. The equilibrium constant equation is a mathematical relationship that describes how the concentrations of products vary with the concentrations of reactants.

The state of a system whose properties are fixed under unvarying external conditions is called the equilibrium state. Chemical equilibria are dynamic in nature because reactants turn into products and products turn into reactants even after equilibrium is reached. However, the speed of forward and backward reactions is the same. Examples of balance include A book placed on the table. A car that moves at a constant speed. A chemical reaction in which the forward and reverse reaction rates are equal.

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Answer:

Calculate density

Weight/mass

386

g

Volume

20

cm³

Density

19,300

kg/m³

Explanation:

Density =mass/volume

=6/3

=2

In a graphite molecule, one valence electron of each carbon atom remains free, Thus making graphite a good conductor of electricity. Whereas diamond, they have no free mobile electron. That's why diamonds are bad conductor electricity.

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Percent yield = 78.7% , the correct answer is D) 78.7%, which represents the percent yield of NaCl in the reaction.

To calculate the percent yield of NaCl in the given chemical equation, we need to compare the actual yield of NaCl with the theoretical yield. The theoretical yield is the amount of NaCl that would be produced if the reaction went to completion based on stoichiometry.

First, we need to determine the theoretical yield of NaCl. By examining the balanced equation, we can see that the stoichiometric ratio between CuCl2 and NaCl is 1:2. This means that for every 1 mole of CuCl2, 2 moles of NaCl are produced.

Step 1: Convert the mass of CuCl2 to moles using its molar mass.

Molar mass of CuCl2 = 63.55 g/mol (atomic mass of Cu) + 2 × 35.45 g/mol (atomic mass of Cl)

Molar mass of CuCl2 = 134.45 g/mol

Moles of CuCl2 = 31.0 g / 134.45 g/mol ≈ 0.231 mol

Step 2: Use the stoichiometry to calculate the theoretical yield of NaCl.

Since the stoichiometric ratio between CuCl2 and NaCl is 1:2, the moles of NaCl produced will be twice the moles of CuCl2.

Moles of NaCl (theoretical) = 2 × 0.231 mol = 0.462 mol

Step 3: Convert the moles of NaCl to grams using its molar mass.

Molar mass of NaCl = 22.99 g/mol (atomic mass of Na) + 35.45 g/mol (atomic mass of Cl)

Molar mass of NaCl = 58.44 g/mol

Theoretical yield of NaCl = 0.462 mol × 58.44 g/mol ≈ 26.96 g

Now, we can calculate the percent yield using the formula:

Percent yield = (Actual yield / Theoretical yield) × 100

Percent yield = (21.2 g / 26.96 g) × 100 ≈ 78.7%

Option D

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If one electron is removed from sodium during a reaction energy level becomes the valence shell is outermost shell

Electrons are the smallest of the particles that make up an atom, and they carry a negative charge a neutral sodium atom is likely to achieve an octet in its outermost shell by loosing its one valence electron the cation produce in this way is Na⁺ is called as sodium ion distinguish it from element and the outermost shell of sodium ion is the second electron shell which has eight electrons in it

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Answer:

SMALL INTESTINE

Explanation:

Answer:

Small Intestine

Explanation:

To calculate the pOH and pH of a 1.25 M LiOH solution at 25°C, we need to use the following equations:

pOH = -log[OH-]

pH + pOH = 14

First, we need to find the concentration of hydroxide ions [OH-] in the solution.

LiOH is a strong base, meaning it completely dissociates in water to form Li+ and OH- ions:

LiOH → Li+ + OH-

So, the concentration of [OH-] in a 1.25 M LiOH solution is also 1.25 M.

Using the pOH equation, we can calculate:

pOH = -log (1.25)

        = 0.9031

Next, we can use the pH equation to find pH:

pH + pOH = 14
pH + 0.9031 = 14

pH = 13.0969

Therefore, the pOH of a 1.25 M LiOH solution at 25°C is 0.9031, and the pH is 13.0969.

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Answer:

Formula C10H13N5O4

he is made with sigma bonds and pi bonds

see the answer in the photo

 overall equation is ,

2FeSo4+heat→Fe203+SO2+SO3

Decomposition reaction is when Reactant break down into simpler parts .

For decomposition reactions require energy input. The decomposition reaction happens in our everday life. The process of digestion food is a type of decomposition ,where breakdown of food from larger to smaller particles and large amount of energy release.

The decomposition is classified into

*thermolysis

*Electrolysis

*photolysis

The overall equation will be

2FeSo4+heat→Fe2O3+SO3+So2

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