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Answer:

1 mole of NaCl reacts with 1 mole of AgNO₃ to produce 1 mole of AgCl and 1 mole of NaNO₃

Explanation:

The given reaction is a double decomposition (metathesis) reaction. A reaction in which the products are formed by the exchange of the ions present in the two reactants. NaCL and AgNO₃ exchange ions to form AgCl, which precipitates and NaNO₃.

The balanced equation for reaction is given below;

NaCl(aq) + AgNO₃(aq) ----> AgCl(s) + NaNO₃(aq)

In the reaction above, the mole ratio of the reactants to products is 1 : 1 ---> 1 : 1

This means that 1 mole of NaCl reacts with 1 mole of AgNO₃ to produce 1 mole of AgCl and 1 mole of NaNO₃.

Given the molar mass of the compounds above;

NaCl = 58.5 g/mol; AgNO₃ = 170 g/mol; AgCl = 143.5 g/mol; NaNO₃ = 85 g/mol

Therefore, 58.5 g of NaCl reacts with 170 g of AgNO₃ to produce 143.5 g of AgCl and 85 g of NaNO₃

a) To calculate the pH of distilled water, we can use the formula: pH = -log[H+].

Given that the [H+] concentration of distilled water is 10^-10 H mol/L, we can substitute this value into the equation:

pH = -log(10^-10) = 10

Therefore, the pH of distilled water is 10.

b) Tap water with a pH between 6.3 and 6.6 is less acidic than distilled water. The pH scale is logarithmic, meaning that each unit change represents a tenfold difference in acidity or alkalinity. Distilled water with a pH of 10 has a higher concentration of hydroxide ions (OH-) compared to hydrogen ions (H+), indicating it is basic or alkaline.

Tap water with a pH range of 6.3 to 6.6 indicates a higher concentration of hydrogen ions (H+), making it slightly acidic. Although both distilled water and tap water have a pH below 7, tap water is closer to neutral (pH 7) and thus less acidic than distilled water.

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Answer:

Sample equal to the atomic mass of an element in grams contains 6.02214179 × 10²³ atoms. This amount of matter is called a mole

Explanation:

Experimentally, it has been determined that 1 mole of any substance contains 6.02214179 × 10²³ elementary entities. The number of elementary entities in the mole is known as Avogadro's number, \(N_A\), or the Avogadro's constant and the unit of the constant is per mole

The molar mass of a compound or an element is the mass of 1 mole of the compound or the element given in grams

Similarly, the gram atomic mass is the mass in grams of 1 mole of the atoms of the element that contains one Avogadro's number of atoms

Therefore, we have;

The number of atoms in a sample equal to the atomic mass of an element in grams = 6.02214179 × 10²³ atoms

The name given to the amount of matter containing equivalent to 6.02214179 × 10²³ elementary particles = A mole.

Answer:

Try using this formula so useful.

Explanation:

Particles = atoms/molecules etc.

A= is your given

B= is what you want

12,194 L is the answer!

Explanation:

Water has the maximum density at the temperature of 4°Celsius. So, it expands at temperatures higher or lower than 4°C, knowing that at the temperature of -25°C the water can't have a lower volume than the one at 15°C.

Answer:

12, 194 L

That's your answer!!!

Answer:

26.4960 is the answer for the first one

8.9569 is the answer for the second one

After adding the sulfuric acid and letting that reaction proceed to completion, Copper sulfate and water chemical species were left in the beaker.

With the chemical formula H2SO4, sulfuric acid, sometimes referred to as oil of vitriol in antiquity, is a mineral acid made up of the elements hydrogen, oxygen, and sulphur. It is a viscous liquid that is miscible with water and is colourless, odourless, and viscous. Because of its strong affinity for water vapour and because it is hygroscopic and rapidly collects water vapour from the air, pure sulfuric acid does not occur naturally on Earth. Due to its potent dehydrating and oxidising qualities, concentrated sulfuric acid is extremely corrosive to various materials, including rocks and metals.

In the industrial setting, copper sulphate is made by heating concentrated sulfuric acid or copper oxides and treating them with the acid. Copper sulphate is typically bought for use in laboratories.

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The element group VI A, also known as the chalcogen group, consists of the elements oxygen, sulfur, selenium, tellurium, and polonium. These elements are characterized by having six valence electrons, which is why they are placed in group VI A of the periodic table.

The period number refers to the row of elements on the periodic table. Elements in period 3 include sodium, magnesium, aluminum, silicon, phosphorus, sulfur, chlorine, and argon.

It is not possible to determine the number of protons in the nucleus of an element based on its group and period alone. The number of protons in the nucleus of an element is equal to its atomic number, which is a unique property of each element.

Oxygen, which is the first element in group VI A, has an atomic number of 8, which means it has 8 protons in its nucleus. Sulfur, which is the second element in group VI A, has an atomic number of 16, which means it has 16 protons in its nucleus. Selenium, which is the third element in group VI A, has an atomic number of 34, which means it has 34 protons in its nucleus. Tellurium, which is the fourth element in group VI A, has an atomic number of 52, which means it has 52 protons in its nucleus. Polonium, which is the fifth element in group VI A, has an atomic number of 84, which means it has 84 protons in its nucleus.

Elements in period 3 with atomic numbers 11, 12, 13, 14, 15, 16, 17, and 18 are sodium, magnesium, aluminum, silicon, phosphorus, sulfur, chlorine, and argon, respectively. These elements have 11, 12, 13, 14, 15, 16, 17, and 18 protons in their nuclei, respectively.

Answer:

The average kinetic energy increases, and the particles collide more frequently.

Explanation:

Answer:

The answer is bacteria (microorganisms)

Explanation:

Bacteria can't be seen with the naked eye but it's part of a species that make up the biodiversity.

The general term for hidden heat absorbed or released when a substance undergoes a change in state is latent heat.

Generally, the specific latent heat of a substance is defined as the quantity of heat energy required to change the state of a unit mass of a substance. EL= ml where EL is referred as the heat transferred, in joules, m is the mass, in kilograms, and l is the latent heat in joules per kilogram. Basically, the SI unit for specific latent heat is Jkg−1

More precisely latent heat is also defined as the energy that is absorbed or released by a substance during a change in its physical state (phase) that occurs without changing its temperature.

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The Ground state electronic configuration of  Cr2+:[Ar] 3d4, Cu2+: [Ar] 3d9, Co3+: [Ar] 3d6

Electronic configuration, sometimes referred to as electronic structure or electron configuration, is the arrangement of electrons in orbitals that surround an atomic nucleus.

1. Cr2+

Atomic no.of Chromium(Cr)=24  

a ground state Chromium's electronic structure is as follows: [Ar] 4s1 3d5 = 1s2 2s2 2p6 3s2 3p6

(Atomic no.of [Ar](argon) = 18)

so,ground state electronic configuration for Cr2+:

[Ar] 4s0 3d4 =[Ar] 3d4

so, ground state electronic configuration of Cr2+:

[Ar] 3d4

2. Cu2+

Atomic number of Copper(Cu)= 29

Ground state electronic configuration of Cu:

[Ar] 4s1 3d10

so, ground state electronic configuration of Cu2+:

[Ar] 4s0 3d9 = [Ar] 3d9

so,electronic configuration of Cu2+:

[Ar] 3d9

3.Co3+

Atomic number of Cobalt(Co)=27

Ground state electronic configuration of Co:

[Ar] 4s2 3d7

so,electronic configuration of Co3+:

[Ar] 4s0 3d6 = [Ar] 3d6

So,electronic configuration of Co3+:

[Ar] 3d6

Therefore the Ground state electronic configuration of

Cr2+:[Ar] 3d4, Cu2+: [Ar] 3d9, Co3+: [Ar] 3d6

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Explanation:

False, gray whales average 75 miles per day at a speed of 5 mph and is the longest annual migration of any mammal.

Answer:

That would be speed.

Explanation:

Explanation:

Hi, there!!!!

Let me simply clear you..

Yes,The tendency to gain electrons (in nonmetal) decreases when we go down group 17.

The reason for above answer is when we go downwards in periodic table then the atomic size increases with the addition of number of shells and force of attraction between the nucleus and valance shell decreases. The force of attraction between the nucleus and valance shell becomes weaker due to which the force of attracting the electrons gets decreased.

So, we can say that the tendency to gain electrons decreases as we go down in periodic table.

Hope it helps....

Answer:

Metals react by losing electrons.  So, there is high reactivity due to lower attraction. Non-metals react by gaining electrons. So, there is high reactivity due to higher attraction.

Explanation:

Metals react by losing electrons. So, there is high reactivity due to lower attraction. Non-metals react by gaining electrons. So, there is high reactivity due to higher attraction. Also, electrons lost by metals transfer to the nonmetals. It is easier for the metals to lose their valance electrons and form cations rather than gaining electrons.

Metals do not hold on to or attract electrons while nonmetals hold on to or attract electrons.

In the periodic table, metals are found towards the left hand side of the table while nonmetals are found towards the right hand side of the table.

Electron affinity of elements increase from left to right across the period. Electron affinity refers to the ability of elements to attract or hold electrons. This ability increase steadily across the period.

Usually, the electron affinity values of nonmetals are very high showing that they easily hold on to and attract electrons while the electron affinity values of metals is very low showing that they do not easily hold on to and attract electrons.

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Answer: It’s C for me: To synthesis new DNA

Explanation:

Brainly please

It is not possible for two electrons to have the same set of all four quantum numbers in an atom, as it would violate the Pauli exclusion principle.

According to the Pauli exclusion principle, no two electrons in an atom can have the same set of all four quantum numbers. The four quantum numbers used to describe an electron's state are the principal quantum number (n), the azimuthal quantum number (l), the magnetic quantum number (m), and the spin quantum number (s).

The principal quantum number (n) determines the energy level of an electron and can have integer values starting from 1. The azimuthal quantum number (l) determines the shape of the electron's orbital and can have values from 0 to (n-1). The magnetic quantum number (m) determines the orientation of the orbital and can range from -l to +l. The spin quantum number (s) describes the spin of the electron and can have two possible values, +1/2 or -1/2.

Since each electron in an atom must occupy a unique set of quantum numbers, they must differ in at least one of the four quantum numbers. This ensures that no two electrons have the exact same quantum state.

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negative charge; a negative delta sign (δ⁻); positive charge; a positive delta sign (δ⁺);

A polar bond is a covalent bond that is formed between two elements of different electro-negativities.

Electro-negativity is the property of the element's affinity toward the gain of electrons. A higher electronegativity showcases a higher affinity to gain electrons while a lower electronegativity shows a lower affinity for electrons.

The electronegativity difference in the polar bond causes the electrons to shift toward the element with higher electronegativity. This shift of electrons leads to a partial charge being developed on both elements.

Since the charge is partial and not to its full value it is represented with the Greek letter Delta(δ) with a superscript of either a + or a - sign depending on the element.

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Answer:

The correct answer is - 66g.

Explanation:

Given:

molecules of CO2 = 9.03 x 10^23

We know:

1 mole of any substance = 6.02x10^23 molecules. (Avogadro's number)

M (CO2) = 12 + (2x16) = 12 + 32 = 44g

Solution:

The mass of CO2 with 9.03x10^23 molecules would be:

44g of CO2 = 6.02x10^23 molecules.

So, the mass in grams of CO2 (X) = 9.03x10^23 molecules

Xg of CO2 = (44x9.03x10^23)/6.02x10^23 = 66g

Thus, the correct answer would be - 66gm.

In the given reaction N2 (g) + 3H2 (g) â 2NH3 (g), the reactants are N2 and H2, and the product is NH3.

During the course of the reaction, the reactants will decrease in concentration as they are being consumed to form the product. Therefore, both N2 and H2 will decrease in concentration. At the same time, the concentration of the product NH3 will increase.

The reaction stoichiometry tells us that one molecule of N2 reacts with three molecules of H2 to produce two molecules of NH3. This means that the decrease in concentration of N2 will be twice as much as the decrease in concentration of H2.

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The following question may be like this:

If only reactants are initially added to a reaction flask, which species decrease in concentration during the course of the reaction N2 (g) + 3H2 (g) â 2NH3 (g)? Select all that apply.

The name for this W(C2H3O2)4 is the chemical formula for lead(IV) acetate, often known as lead tetraacetate, is Pb(C2H3O2)4.

Chemical formula is defined as any of a number of ways to describe the structure or content of chemical substances. The chemical formula is a way of expressing information about the atomic proportions that make up a certain chemical compound or molecule using the numbers and symbols of the chemical elements. The sorts of atoms and their numbers in a molecule or compound are described using chemical formulae. Each element's atoms are denoted by one or two distinct letters.

It is not a salt because it is a colorless solid that dissolves in nonpolar, organic liquids. Moisture causes it to break down, therefore acetic acid is usually added when storing it. The substance is utilized to create organic compounds.

Thus, the name for this W(C2H3O2)4 is the chemical formula for lead(IV) acetate, often known as lead tetraacetate, is Pb(C2H3O2)4.

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The volume of a 0.92 M barium acetate solution that contains 75.0 g of barium acetate is 319 mL.

To calculate the volume in milliliters of a 0.92M barium acetate solution that contains 75.0 g of barium acetate, follow these steps:
Determine the molar mass of barium acetate, Ba(C₂H₃O2)₂.
Ba: 137.33 g/mol
C₂H₃O₂: 2 * (2 * 12.01 g/mol + 3 * 1.01 g/mol + 2 * 16.00 g/mol) = 2 * 59.04 g/mol
Total molar mass: 137.33 g/mol + 2 * 59.04 g/mol = 255.41 g/mol
Then, calculate the moles of barium acetate in 75.0 g.
moles = mass / molar mass
moles = 75.0 g / 255.41 g/mol = 0.2937 mol
Use the molarity formula to find the volume in liters.
M = moles / volume (L)
0.92M = 0.2937 mol / volume (L)
Volume (L) = 0.2937 mol / 0.92M = 0.3192 L
Convert the volume from liters to milliliters.
Volume (mL) = 0.3192 L * 1000 mL/L = 319 mL (rounded to 3 significant digits)

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Answer:

c

Explanation:

A hydrocarbon consists of only carbon and hydrogen atoms. Combustion occurs when a hydrocarbon reacts with oxygen to form carbon dioxide and water molecules.

The pi bond between N and O in nitrosyl chloride, NOCl, is formed by the overlap of the p orbital on nitrogen and the p orbital on oxygen. This results in a double bond between the two atoms. The nitrogen atom in NOCl has one sigma bond and one pi bond with the oxygen atom.

Therefore, N has one pi bond in NOCl. The molecule also has one Cl atom, which is bonded to the nitrogen atom through a single sigma bond. Overall, NOCl has one sigma bond and one pi bond between N and O, and one sigma bond between N and Cl. The hybridization of N in NOCl is sp2, as it has three regions of electron density around it. The molecular geometry of NOCl is bent, with the nitrogen atom at the center and the oxygen and chlorine atoms on opposite sides.

In nitrosyl chloride (NOCl), the pi bond between nitrogen (N) and oxygen (O) is formed by the overlapping of atomic or hybrid orbitals. For N, the orbital involved in the pi bond is the 2p_z orbital, and for O, it's also the 2p_z orbital. When these orbitals overlap, they create the pi bond that contributes to the overall structure of NOCl.

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The mass of CO2 that will be formed when 8.94 g O2 completely reacts would be 6.15 g

From the equation:

\(CH_4 + 2O_2 ---> CO_2 + 2H_2O\)

The mole ratio of O2 to CO2 is 2:1.

Mole of 8.94 g O2 = mass/molar mass

                               = 8.94/32

                                 = 0.28 moles

Equivalent mole of CO2 = 0.28/2

                                         = 0.14 moles

Mass of 0.14 moles CO2 = 0.14 x 44.01

                                          = 6.15 g

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Answer:

B) Rubbing alcohol

Explanation:

It is a solution

CH4 + 2O2 → CO2 + 2H2O (Balanced equation)

Water will condense to liquid form at normal temperature.

One mole of oxygen is created when one mole of methane combines with two moles of oxygen.

7.5 moles of methane will react with 20 moles of oxygen to form 7.5 moles of carbon dioxide.

Hence, the resulting mixture will contain 7.5 moles of unreacted methane and 7.5 moles of carbon dioxide.

The total volume of the mixture will be 20 moles.

How many moles of oxygen are needed for the methane ch4 combustion reaction?

For full burning, 1 mole of methane needs 2 moles of oxygen.

What reaction is CH4 2O2 → CO2 2H2O?

Incomplete combustion

CH4 + 2O2 → CO2 + 2H2O

Incomplete combustion – carbon monoxide and water.

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Linear search will locate the element more rapidly as compared to binary search.

A linear search will start by looking for an element in the first element, then move on to the second, third, and so forth. The linear search technique may use no more than 4 iterations because it is known that the element is one of the first 4 items.

The set will be split in half using a binary search, which will then determine which side contains the element. Then it divides that portion of the set into two again, checks to see if the element is present in each half, and so forth.

Since the list has 32 elements, the first iteration of the list has 16 elements, the second iteration has 8, the third has 4, the fourth has 2, and the fifth iteration has 1 element (the element in which we are interested). Thus, the binary search algorithm needs 5 iterations.

Since binary search needs five iterations and linear search only needs four, linear search will locate the element more quickly.

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Answer:

Probably the one you are already dating...

Explanation:

...but if you really like the other guy then you should chose him.

Using the given mass of the compound (0.520 g) and the calculated moles, we can determine the molar mass of the compound.

To find the molar mass of the compound, we can use the formula:

ΔT = Kf * m

where ΔT is the freezing point depression, Kf is the cryoscopic constant (in this case, 3.90 °C/m), and m is the molality of the solution.

First, we need to calculate the molality (m) of the solution:

m = moles of solute / mass of solvent (in kg)

The mass of the solvent (lauric acid) is given as 4.62 g. Since the unknown compound is a solute, we need to convert its mass to moles:

moles = mass / molar mass

Given that the mass of the unknown compound is 0.520 g, we can now calculate the moles of the compound.

Next, we convert the mass of the solvent to kg by dividing by 1000:

mass of solvent (lauric acid) = 4.62 g / 1000 = 0.00462 kg

Now we can calculate the molality:

m = moles of solute / mass of solvent = (moles of the compound) / (mass of solvent)

Finally, we can use the freezing point depression formula to find the molar mass of the compound:

ΔT = Kf * m

Substituting the given values:

4.20 °C = 3.90 °C/m * m

Now solve for m:

m = (4.20 °C) / (3.90 °C/m)

Once we have the molality, we can calculate the moles of the compound:

moles = molality * mass of solvent (in kg)

Finally, we calculate the molar mass:

molar mass = mass of solute / moles of solute

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