how many grams of sodium bromide would be produced from the complete reaction of 41.3 AgBr ?

Wine was produced 37 years ago (1984 as usual year 15,2021) that is shown in the calculations below.

Reaction rate is calculated using the formula rate = Δ[C]/Δt, where Δ[C] is the change in product concentration during time period Δt. The rate of reaction can be observed by watching the disappearance of a reactant or the appearance of a product over time.

The time can be represented as follows:

t= 2.303\∧ log A0/A

∧= 0.693/t 1/2

The rate of a reaction is proportional to the reciprocal of the time taken. Rate α 1 time Rate is inversely proportional to time. Units: s-1, min-1 etc.

The given parameters are as follows:

t1/2=12.3

A0=5.5

A=0.688

t= 2.303/(0.693/12.3) log (5.5/0.688)

t=36.9

t=37 years

Thus, wine was produced 37 years ago (1984 as usual year 15,2021)

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Answer:

Li3N

Explanation:

Li+N2=Li3N.........................

Answer:

4 Li(s)+O2(g) → 2 Li2O(s)

Explanation:

its right

The ions formed by Na and by Cl is Na forms a +1 ion, and Cl forms a -1 ion.

What is ions?
An molecule or atom with such a net electrical current is known as an ion. Conventionally, the charge of the an electron is thought to be negative; this charge is equal to and opposite to a charge of the a proton, which would be thought to be positive. Because the total amount of electrons in an ion is greater than the total number of protons, the net charge of the an ion is not zero. A negatively charged ion called an anion has more protons than electrons compared to a chloride ion called a cation. Electrostatic force causes opposite electric charges to be drawn towards one another, causing cations and anions to attract one another and easily form ionic compounds.

Na forms a +1 ion, and Cl forms a -1 ion.
This is because Na has one valence electron and Cl has 7 valence electrons.
When Na loses its valence electron it becomes a +1 ion, and when Cl gains one more electron it becomes a -1 ion.
This is due to the fact that Na has a lower electronegativity than Cl, and thus is more likely to lose an electron in a chemical reaction.

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Answer:exo becuse it is like temp

Explanation:

Answer:

Halogens always form anions, alkali metals and alkaline earth metals always form cations. Most other metals form cations (e.g. iron, silver, nickel), whilst most other nonmetals typically form anions (e.g. oxygen, carbon, sulfur).

Explanation:

Examples: Sodium (Na+), Iron (Fe2+), Ammonium (NH4

Lithium, Sodium, Beryllium, and Aluminum elements form cations.

Cations means positively charged ions. Element which forms cation is Metal. Cations formed at cathode.

Anions means negatively charged ions. Element which form anions is Non metal. Anions formed at anode.

Now check one by one which elements will form cations:

(a) Lithium form cation \((Li^{+})\), because lithium loses its electron and it form positive charge.

(b) Sodium form cation \((Na^{+})\), since sodium is a alkali metal and sodium has tendency to lose an electron.

(c) Beryllium form cation \((Be^{2+})\), because it donates or loses two electrons to become stable.

(d) Aluminum form cation \((Al^{3+})\), because it loses its three electrons and has a three positive charge.

(e) Phosphorus form anion \((P^{3-})\) , since phosphorus is a non-metal.

(f) Oxygen atom exists as neutral it neither form cation nor anion.

(g) Fluorine form anion \((F^{-})\), because fluorine atom gains an electron.

Thus, from above conclusion we can say that Lithium, Sodium, Beryllium, and Aluminum elements form cations.

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The following statements on HPLC modes are true is more polar compounds elute first in normal-phase HPLC (Option E).

The liquid chromatography (HPLC) is a technique in analytical chemistry employed for the separation, identification, and quantification of elements. It is considered a highly sensitive method, and it works by separating the components in a mixture with the assistance of a solvent under high pressure.

There are two modes of HPLC: Reversed-Phase HPLC (RP-HPLC) and Normal-Phase HPLC (NP-HPLC). In RP-HPLC, a nonpolar stationary phase, such as C18, is used, and polar solvents, such as water, are used as mobile phases. Polar stationary phases, such as silica gel, are used in NP-HPLC, while nonpolar solvents, such as hexane, are used as mobile phases.

More polar compounds have a greater affinity for the polar stationary phase than less polar compounds, which have a higher affinity for the nonpolar mobile phase in NP-HPLC. As a result, less polar compounds elute first in normal-phase HPLC.

Thus, the correct option is E.

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Answer:

Aluminum is highly reactive

Explanation:

Chemical property is defined as the property in which chemical composition of the substance changes.

For example, reactivity, oxidation state, inflammability etc are all chemical properties.

Therefore, we can conclude that out of the given options, Aluminum is highly reactive depict a chemical property of aluminum.

Atoms are composed of a central nucleus surrounded by electrons. The central nucleus contains protons and neutrons. Protons have a positive charge, while neutrons are neutral.

Electrons, on the other hand, have a negative charge. The number of protons in an atom determines its atomic number, which defines its identity as a specific element. For example, an atom with six protons is carbon. Neutrons, although they do not affect the atom's identity, contribute to its mass. Electrons, which are much smaller and lighter than protons and neutrons, orbit around the nucleus in specific energy levels or electron shells. These shells can accommodate a limited number of electrons.

For instance, the first shell can hold up to two electrons, the second shell can hold up to eight, and so on. The arrangement and movement of electrons in these shells determine an atom's chemical properties and how it interacts with other atoms to form compounds. Understanding the composition and behavior of atoms is fundamental to understanding the structure of matter.

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The molarity of the solution is 0.5 M.

To calculate the molarity of the solution, we need to first calculate the number of moles of NaF present in the solution. The molar mass of NaF is 41.99 g/mol (22.99 g/mol for Na and 19.00 g/mol for F).

Number of moles of NaF = mass of NaF / molar mass of NaF

= 15.1 g / 41.99 g/mol

= 0.359 mol

The volume of the solution is given as 550.0 mL, which needs to be converted to liters (L) as the unit of molarity is moles/L.

Volume of the solution = 550.0 mL = 0.5500 L

Molarity of the solution = number of moles of solute / volume of solution

= 0.359 mol / 0.5500 L

= 0.653 M

However, we need to consider that the NaF was diluted to a final volume of 550.0 mL, which means that the concentration of the solution has been decreased. Therefore, we need to divide the calculated molarity by 2.

Molarity of the solution after dilution = 0.653 M / 2

= 0.5 M

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Answer:  25.402 L  

Explanation:

charles law

V2= V1 x T2/T1  = 8.4 x 919.3  / 304 = 25.402 L

14 moles of KBr will be produced from 7 moles of BaBr2.

To determine the moles of KBr produced from 7 moles of BaBr2, we need to consider the balanced chemical equation for the reaction between BaBr2 and K2SO4:

BaBr2 + K2SO4 -> 2 KBr + BaSO4

From the equation, we can see that 1 mole of BaBr2 reacts to produce 2 moles of KBr. Therefore, if 7 moles of BaBr2 are used, we can calculate the moles of KBr produced as follows:

Moles of KBr = 2 moles of KBr per 1 mole of BaBr2 x 7 moles of BaBr2

Moles of KBr = 2 x 7 = 14 moles of KBr

Hence, from 7 moles of BaBr2, 14 moles of KBr will be produced.

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Option C; The molecular geometry (shape) of the H3O+ ion is  trigonal pyramidal.

A cation The hydronium ion is also known as H3O+. If we look at the nomenclature for the hydronium ion, we can see that it can also be referred to as oxonium in the IUPAC nomenclature.

The name hydronium must be used to specifically identify hydronium ions because "oxyonium" is a broad term for all trivalent oxygen cations.

19.02 g/mol is the molar mass of the hydronium ion.

The three hydrogen atoms in H3O+ form a triangle at the three corners of oxygen, and one single pair of electrons on oxygen gives H3O+ its pyramidal shape.

The hydronium ion has the chemical formula H3O+. Any time an acid dissolves in water, the hydronium ion is created.

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To solve this problem, we can use the ideal gas law: PV = nRT. However, since the gas is at STP (Standard Temperature and Pressure), we can use the simplified equation: V = nRT/P, where P is the pressure at STP (1 atm) and T is the temperature at STP (273.15 K).

First, we need to find the number of moles of each gas in the sample. We can use the molar mass of each gas to convert the given masses to moles:

moles of oxygen = 1.15 g / 32.00 g/mol = 0.0359 mol
moles of nitrogen = 1.55 g / 28.01 g/mol = 0.0553 mol

Next, we can calculate the total number of moles in the sample:

total moles = moles of oxygen + moles of nitrogen
total moles = 0.0359 mol + 0.0553 mol
total moles = 0.0912 mol

Now we can plug in the values into the simplified equation for volume:

V = nRT/P
V = (0.0912 mol)(0.0821 L·atm/mol·K)(273.15 K)/(1 atm)
V = 2.04 L

Therefore, the volume of the gas sample is 2.04 L. The answer is (b).

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The equilibrium concentration of [F2] in the reversible reaction 2F2 (g) ⇌ 2F (g) can be calculated as the square root of ([F]^2 / Kc).



The given reaction is not specified, but based on the provided information, let's assume it is the reversible reaction:2F2 (g) ⇌ 2F (g)

The equilibrium constant for this reaction can be expressed as:

Kc = [F]^2 / [F2]^2

To find the equilibrium concentration of [F2], we need to set up an expression using the equilibrium constant. Rearranging the equation, we get:[F2]^2 = ([F]^2) / Kc

Taking the square root of both sides:[F2] = √([F]^2 / Kc)

Therefore, the equilibrium concentration of [F2] is given by the square root of the ratio of the square of [F] to the equilibrium constant Kc.

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Answer:

Option B:igneous rock

Explanation:

Metamorphic rocks are formed as a result of heat and pressure transforming the original or parent rock completely into a new rock. Now this original or parent rock can either be sedimentary, igneous, or another metamorphic rock.

Thus, looking at the options, the only source of metamorphic rocks is from igneous rocks.

Answer:

B

Explanation:

Took the test

Answer:

1:2

Explanation:

For every 4 moles of aluminum, there are 2 moles of aluminum oxide, so the mole ratio when converting from aluminum to alunmimum oxide is

2 moles aluminum oxide:4 moles aluminum. This can be simplified to 1:2.

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Synthesis reaction

It is a reaction in which 2 or more reactants combine with each other to form one product .

Check option C

Sulphate and water are combining to form sulfuric acid .

Hence option C is correct

Answer:

SO3 + H2O => H2SO4

Explanation:

I took the test :)

The right to lead assessment model (rlam)'s component of trust can be best described as the bond's strength.

The bond separation energy, or the amount of energy needed to break a particular bond in a mole of particles, is used to estimate a covalent bond strength. Stronger than single bonds between the same atoms are multiple bonds.

The fact that a bond has a high bond energy indicates that the particle containing the bond is likely to be stable and less receptive. The majority of bonds in mixtures that are more responsive will have lower bond energies.

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Answer:

They also showed the effects of pressure on volume if temperature stayed the same

Explanation:

They also showed the effects of pressure on volume if temperature stayed the same is the experiment that will provide an evidence for Boyle's law.

Boyle's law states that "the volume of a fixed mass of a gas varies inversely as the pressure changes, if the temperature is constant".

Neutrons are not charged particles, they have no electrical charge, unlike protons that are positively charged and electrons that are negatively charged. Neutrons have a neutral charge, and they do not interact with charged particles like electrons and protons, but they can interact with other particles through the strong nuclear force.

Regarding the term "high-energy," neutrons can indeed be high-energy particles in certain situations. For example, when they are emitted during a nuclear reaction, they can have a lot of kinetic energy. However, in general, neutrons have a much lower energy than other subatomic particles like protons and electrons.
In summary, neutrons are not charged particles, but they can be high-energy particles in certain contexts.

The correct answer to the question is false.

Neutrons are not charged, high-energy particles. Instead, they are neutral particles found in the nucleus of an atom, along with protons. Neutrons have no charge, meaning they are not charged particles. Protons, on the other hand, are positively charged particles found in the nucleus.

While neutrons can be involved in high-energy reactions, such as nuclear fission and fusion, they themselves are not inherently high-energy particles. High-energy particles, such as cosmic rays or particles accelerated in particle accelerators, often carry a charge and exhibit high kinetic energies.

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The concentrations of both mercury chloride and oxalate ion are 0.30 m,  the rate of the reaction is 7.8 × 10⁻⁴ M/s.

given that :

concentration of mercury chloride =  0.30 M

concentration of oxalate ion = 0.30 M

It can be written as:

2HgCl₂  +  C₂O₄²⁻   -----> 2Cl⁻  +  Hg₂Cl₂  +  2CO₂

k = 8.7 × 10⁻³ M⁻²/s⁻¹

The rate of the reaction will be shown as :

Rate = k [HgCl₂ ] [ C₂O₄²⁻ ]²

Rate =  8.7 × 10⁻³  (0.30)(0.30)²

Rate = 7.8 × 10⁻⁴ M/s

Thus, rate of the reaction will be  :

Rate = 7.8 × 10⁻⁴ M/s

This question is incomplete , the complete question is :

__""when the concentrations of both mercury chloride and oxalate ion are 0.30 m, what is the rate of the reaction? "__

the rate is given as : Rate = k[HgCl₂ ] [ C₂O₄²⁻ ]²  value of k = 8.7 × 10⁻³ M⁻²/s⁻¹__"

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The sum of 89.0, 469, and 0.3469, rounded to the appropriate number of significant figures, is 558.3, with three significant figures.

To calculate the sum of 89.0, 469, and 0.3469, we add these numbers together. The sum of 89.0 and 469 is 558.0, and when we add 0.3469 to this sum, we get 558.3469. However, we need to express the result with the correct number of significant figures.

The rule for determining the number of significant figures in addition is to consider the number with the least number of significant figures. In this case, 0.3469 has four significant figures, whereas 89.0 and 469 have three significant figures. Therefore, our final answer should have three significant figures. Rounding the result to three significant figures, we get 558.3.

Significant figures, also known as significant digits, are used to indicate the precision or accuracy of a measurement or calculation. They represent the digits that carry meaning in a number. When performing calculations, it is important to consider the number of significant figures and apply rounding rules to ensure the result is properly expressed.

In addition, the rule for addition and subtraction is to consider the number with the least number of significant figures. This is because the least precise measurement limits the level of precision for the final result. By rounding to the appropriate number of significant figures, we maintain consistency and avoid falsely implying a higher level of precision than is justified by the original data.

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Answer:

D

Explanation:

The wavelength of emitted light is calculated as (a) is 122 nm, (b) is 103 nm, (c) is 486 nm, and for (d) is 434 nm.

The Rydberg formula is mathematical formula for evaluating wavelength of light emitted by electron moving between the energy levels of an atom.

We can find out the wavelength emitted in the hydrogen atom electron transitions using Rydberg´s equation.

using, 1/λ = Rh x ( 1/n₁² - 1/n₂² )

where  λ is wavelength;        

Rh is Rydberg´s constant 1.097 x 10⁷/m;

n₁, n₂ are the principal quantum numbers                  

a.) Given, n₁ = 1 and n₂ = 2

1/λ = 1.097 x 10⁷/m  x ( 1/1² - 1/2² )  = 8.228 x 10⁶ / m

Taking inverse on both sides :

λ = 1 /8.228 x 10⁶ /m = 122 nm

b.) Given, n₁ = 1 and n₂ = 3

1/λ = 1.097 x 10⁷/m  x ( 1/1² - 1/3² ) = 9.751 x  10⁶ / m                                                

λ = 1 /9.751 x 10⁶ /m  = 103 nm

c.)  Given, n₁ = 2 , n₂ = 4

1/λ = 1.097 x 10⁷/m  x ( 1/2² - 1/4² ) = 2.057 x 10⁶ / m

λ = 1 /2.057 x 10⁶ /m  = 486 nm

d.) Given, n₁ = 2 , n₂ = 5

1/λ = 1.097 x 10⁷/m  x ( 1/2² - 1/5² ) = 2.304 x 10⁶ / m

λ = 1 /2.304 x 10⁶ /m = 434 nm

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Note: The question on portal is incomplete. Here is the complete question.

Question: Calculate the wavelength of the light emitted when an electron in a hydrogen atom makes each of the following transitions.

a. n = 2 --> n = 1 ?

b. n = 3 --> n = 1 ?

c. n = 4 --> n = 2 ?

d. n = 5 --> n = 2 ?

Cellulose is a branched homo-polysaccharide of glucose. The glucose monomers form the B1->4 linked chain.

The Cellulose is linear homo-polysaccharide of the D-glucose units, that are linked together through the bond that is beta-1,4 glyosidic bonds. The Homo-polysaccharides are the polysaccharides that are composed of the single type of the sugar monomer. The hydrogen bonds from in between the adjacent monomers.

The additional H-bonds are in the between chains and the structure is the tough and the water-insoluble. This is the most abundant polysaccharide in the nature. The Cellulose is the complex carbohydrate and it will consisting the oxygen, the carbon, and the hydrogen. The cellulose is the chiral.

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Answer:

I want to say E or B

Explanation:

Answer:

the answer to the qustion is 0.013089701 na

Explanation:

n/a

Answer:

False

Explanation:

The physical properties of melting point, boiling point, vapor pressure, evaporation, viscosity, surface tension, and solubility are related to the strength of attractive forces between molecules. These attractive forces are called Intermolecular Forces.

From the periodic trends, one atom in the same group which is larger than a sulfur atom is selenium, and one which is smaller is oxygen.

From Coulomb's Law, the size of an atom decreases with an increase in the force of attraction and decreases with an increase in the forces of repulsion.

Sulfur belongs to group 6A or 16 of the periodic table.

Elements in group 6A have six electrons in their valence shells.

The valency of elements in group 6a of the period table is usually 2, 4 or 6.

Based on the periodic trends, the atomic size of elements in group 6A increases on going down the group due to an extra electron shell added to the atoms of the elements.

The other elements in group 6A are oxygen, selenium, and tellurium. etc.

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1. a chemical bond between atoms with similar electronegativities - covalent bond

2. a measure of the ability of an atom to attract electrons within a chemical bond - Electronegativity

3. a bond between atoms of greatly differing electronegativities - Ionic bond

4. the bond formed in metals, holding metals together - Metallic bond

A covalent bond is a bond formed by sharing electrons between two atoms that occur in the bond. It generally forms between atoms with similar electronegativity values.

An ionic bond is a bond formed between two oppositely charged ions of her and held by strong electrostatic attraction. It forms between atoms that have vastly different electronegativities.

Electronegativity is the tendency of an atom in a covalent bond to attract a shared pair of electrons.

A metallic bond is a bond formed by electrostatic attraction between a positively charged metal ion and a conduction electron.

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