what are the coefficients for the reaction _Cl2O5+_H2O>_HCIO3 once it is balanced

Answer: A

Explanation: Just took the test

Relative and average atomic mass both describe properties of an element related to its different isotopes. Out of these two Relative atomic mas is more accurate. Therefore, the correct option is option D that is the weight of the probe will decrease.

Mass defines the quantity of a substance. It is measured in gram or kilogram. Average mass is the mass of atoms of an element that are isotopes. It can be calculated by multiplying mass of a isotope to natural abundance of that isotope.

The relative mass is the mass that is with respect to mass of a matter that is considered as standard. In chemistry relative mass is equal to the mass of one-twelfth the mass of C-12 isotope .

% relative error=(Difference in weight÷ original weight)×100

The weight of the probe will decrease.

Therefore, the correct option is option D that is the weight of the probe will decrease.

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Answer:

edg 2020

Explanation:

Ammonia gas reacts with oxygen gas.

Nitric oxide gas and liquid water are produced.

Platinum is used as a catalyst.

The equation is unbalanced because the number of hydrogen atoms is not the same on both sides of the equation.

Answer:

Ammonia gas reacts with oxygen gas.

Nitric oxide gas and liquid water are produced.

Platinum is used as a catalyst.

The equation is unbalanced because the number of hydrogen atoms is not the same on both sides of the equation.

Explanation:

For edge:)

Answer:

The second symbol represents elthapy in chemical reactions.

Answer:

\(m_{H_2O}=9.24gH_2O\)

Explanation:

Hello there!

In this case, since there is a 2:2 mole ratio between sodium peroxide and water according to the given reaction, it is possible to apply the following stoichiometric setup for the calculation of the required mass of water:

\(m_{H_2O}=40.0gNa_O_2*\frac{1molNa_O_2}{78gNa_O_2}*\frac{2molH_2O}{2molNa_O_2} *\frac{18.02gH_2O}{1molH_2O} \\\\m_{H_2O}=9.24gH_2O\)

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Answer: With the first quarter moon, the Moon is "waxing", which means getting larger. with the third quarter moon, the Moon is "waning", which means getting smaller.

Explanation: In each case, the Moon is half lit ---- first quarter moon is when it is increasing and the third quarter moon is decreasing

Hope this helped! :)

Answer:

I think the insect would be the one in the second photo reading from left to right

Explanation:

the other insects:

the first of the first photo is a change of what would be the external surface of the insect, it is not the insect itself.

In the third photo, the insect has short legs with little grip, which indicates that it does not climb large areas on top, and finally, the 4 image is of an insect that lives in desert areas and is poorly coordinated in areas of high heat. and sand.

These are the reasons why I chose photo number two reading from left to right

Answer:

I would say that your answer would be the second one.( the red one)

Explanation:

because the legs it has seem like it would grip onto trees fairly well.

An example of heterogeneous equilibrium is:

Heterogeneous equilibrium refers to an equilibrium state in a chemical reaction where the reactants and products exist in different physical states or phases. It occurs when substances in different phases, such as solids, liquids, and gases, are involved in a chemical reaction.

Considering the given equations:

The equation I: FeO(s) + CO(g) ⇌ Fe(s) + CO₂(g) represents a heterogeneous equilibrium.

This is because the reactants and products involve different phases (solid and gas). FeO is a solid (s), CO is a gas (g), Fe is a solid (s), and CO₂ is a gas (g). The reaction involves the conversion of a solid and a gas to another solid and a gas, and the equilibrium is established between these different phases.

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The maximum mass of water that could be produced by the chemical reaction is 162 g.

The given chemical equation is: 2 C8H18(l) + 25 O2(g) → 16 CO2(g) + 18 H2O(l)In the chemical reaction of liquid octane with gaseous oxygen, the products are gaseous carbon dioxide and gaseous water.According to the balanced chemical equation, 2 moles of C8H18 react with 25 moles of O2 to form 18 moles of H2O.So, 1 mole of C8H18 react with 25/2 = 12.5 moles of O2 to form 9 moles of H2O.The molar mass of C8H18 is 114 g/mol. So, the number of moles in 17 g of C8H18 is:17 g / 114 g/mol = 0.149 molThe molar mass of O2 is 32 g/mol. So, the number of moles in 112 g of O2 is:112 g / 32 g/mol = 3.5 molFrom the balanced chemical equation, 1 mole of C8H18 react with 12.5 moles of O2 to form 9 moles of H2O.So, the number of moles of O2 required to react with 0.149 mol of C8H18 to form H2O is:(12.5 mol / 1 mol) × (0.149 mol / 2 mol) = 0.935 molThe maximum number of moles of H2O that can be produced from 0.149 mol of C8H18 and 0.935 mol of O2 is 9 mol.So, the mass of water produced from 17 g of C8H18 and 112 g of O2 is:9 mol × 18 g/mol = 162 g

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The jumbled word "gzeysktqix" can be unscrambled to form the word "skyzigtext."

Here are possible words that can be made from this jumbled word:

Sky: Referring to the atmosphere above the Earth.

Zig: Describing a series of sharp turns or angles.

Text: Referring to written or printed words.

Six: The number following five and preceding seven.

It seems that the jumbled word has provided a mix of letters that can be rearranged to form these words. This exercise is likely intended to enhance the student's vocabulary skills, spelling ability, and problem-solving skills. By unscrambling the letters, the student is encouraged to explore different word possibilities and apply their knowledge of language. It also promotes critical thinking and creativity as they find valid words from the given set of letters.

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The empirical formulas of the four ionic compounds that can be formed from the given ions are NH4CN, Fe(IO3)3, NH4I, and Fe(CN)3.

Ionic compounds are formed when oppositely charged ions are attracted to each other by electrostatic forces to form a neutral compound. In this case, we have four different ions: NH^+, CN^-, IO3^-, and Fe^3+. To form an ionic compound, we need to pair up ions with opposite charges in such a way that the overall charge of the compound is neutral.

The ammonium ion (NH4^+) has a charge of +1, and the cyanide ion (CN^-) has a charge of -1. When they combine, the charges cancel out, giving a neutral compound with the formula NH4CN.

The iron(III) ion (Fe^3+) has a charge of +3, and the iodate ion (IO3^-) has a charge of -1. To balance the charges, we need three iodate ions for every iron(III) ion. Therefore, the formula for the compound is Fe(IO3)3.

The ammonium ion (NH4^+) has a charge of +1, and the iodide ion (I^-) has a charge of -1. When they combine, the charges cancel out, giving a neutral compound with the formula NH4I.

The iron(III) ion (Fe^3+) has a charge of +3, and the cyanide ion (CN^-) has a charge of -1. To balance the charges, we need three cyanide ions for every iron(III) ion. Therefore, the formula for the compound is Fe(CN)3.

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A full response is that the molecule with 32.1 g of S and 32 g of O has the empirical formula SO2.

Every compound's empirical formula is the simplest whole-number ratio of all of its atom types. It could occasionally be the same as the compound's molecular formula.

By first calculating the masses of each element contained in a compound, it is possible to experimentally ascertain the complex's empirical formula. Afterward, turning each element's mass into a corresponding mole.

To determine the empirical formula of the compound, we need to find the simplest whole-number ratio of the elements in the compound.

Moles of S = mass of S / molar mass of S

Moles of S = 32.1 g / 32.06 g/mol (molar mass of S)

Moles of S = 1.001 mol

Moles of O = mass of O / molar mass of O

Moles of O = 32 g / 15.99 g/mol (molar mass of O)

Moles of O = 2.001 mol

Moles of S in simplest ratio = 1.001 mol / 1.001 mol = 1

Moles of O in simplest ratio = 2.001 mol / 1.001 mol = 2

The empirical formula of the compound is SO2.

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The acid dissociation constant(Ka) is 0.0095

The reaction for this dissociation of acid is

HSO4 ⇄H+ + SO4 -2

The dissociation constant can be determined from the following expression

\(Ka= \frac{[H+] [SO4]-2}{[HSO4}\)  

[H+] = 10-PH

       = 10-1.35

[H+]  = 0.0447

[H+] = 0.0447 mol / L

From equation, [H+] = [SO4-2] = 0.0447 mol / L

[SO4-2] = 0.0447 mol / L

From the values of [H+], [SO4-2] and [HSO4] Ka can be calculated as follows,

Ka = 0.0447 * 0.0447 / 0.200

     = 0.0019 / 0.200

     = 0.0095

Hence the value of the acid dissociation constant (Ka) for the given reaction is  0.0095

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The number of moles of oxygen (O2) required to completely react with 27.4 mol of H2 is 13.7 moles.

The number of moles of a substance can be calculated using stoichiometry as follows:

The following balanced chemical equation is given as follows:

2H2 + O2 = 2H2O

According to this question, 2 moles of hydrogen gas (H2) reacts with 1 mole of oxygen gas (O2).

This means that 27.4 moles of hydrogen gas (H2) will react with 27.4/2 = 13.7moles of oxygen gas.

Therefore, the number of moles of oxygen (O2) required to completely react with 27.4 mol of H2 is 13.7 moles.

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Answer:

c) H2O and HSO4-

Explanation:

The dehydration of 2-methylcyclohexanol occurs in the presence of H2SO4. Recall that acids are proton donors in solution; the equilibrium shown below is then set up,

H2SO4(aq)  +  H2O(l) ⇄H3O^+(aq) + HSO4^-(aq)

The species H2O and HSO4- are two proton acceptors in the system. According to the Brownstead- Lowry definition, a base is a proton acceptor in solution.

Hence H2O and HSO4- are bases present in the dehydration of 2-methylcyclohexanol.

Answer:

Option B, the phenyl group is an electron withdrawing group by induction, which stabilizes the anion formed in the reaction

Explanation:

Cyclohexanol  is less acidic than the phenol and has a stable alkoxide ion. Phenol group is attached to the oxygen atom and due to a double bond and presence of negative inductive effect, phenols act as an electron withdrawing group. The anion is stabilized by induction  

Hence, option B is correct

1.2 grams of hydrochloric acid (HCI) mixed in 0.025L of solution. Molarity of the solution is 0.192 M.

Molarity, or molar concentration, is a unit of measurement that indicates the amount of a solute in a given solution, expressed as moles of solute per liter of solution (M or mol/L). It is a measure of the concentration of molecules of a solute in a given solution, and can be used to calculate dilutions, such as when preparing buffers or quantifying the amount of a product (such as DNA) present in a solution.

The molecular weight of HCl is 36.46 g/mol, so 0.0048 mol HCl divided by 36.46 g/mol gives 1.2 g HCl. To calculate the molarity, i.e. moles of HCl per liter of solution, you take 0.0048 mol HCl divided by 0.025 L, which gives 0.0048 mol HCl/0.025L, or 0.0048 mol/L, which is the molarity of the solution.

n= \(\frac{1.2}{36.46}\) = 0.0048

M= \(\frac{n}{V}\)

substituting the values,

M = 0.19 M

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600 and 1,300 degrees Celsius

In pretty sure

At a fixed pressure and number of moles, the formula between the temperatures and volumes is described by Charles' Law. V₁/T₁ = V₂/T₂ is the formula that represents it.

The law can be written as mathematically expressed:

Through the equation V₁ / T₁ = V₂ / T₂, a proportional relationship can be seen between T₁, V₁, T₂, and V₂.

The closing volume and heat are represented by V2 and T2, while the starting volume and heat are symbolized by V1 and T1.

As declared by the equation, the concluding ratios of temperature and volume hold parity to their preliminary values while upholding consistent mole count and pressure.

Kelvin (K), is a necessary absolute unit of temperature measurement.

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The given equation represents the reaction between zinc (Zn) and nitric acid (HNO3). The balanced chemical equation for this reaction is : Zn + HNO3 → Zn(NO3)2 + H2Zinc is a metal, and nitric acid is an acid.

This reaction is a redox reaction as the oxidation state of Zinc is changed from 0 to +2, and the oxidation state of Nitrogen in Nitric acid is changed from +5 to +4.The reactants in the equation are zinc and nitric acid. Zinc is a solid metal, while nitric acid is a colorless, corrosive liquid. In this reaction, zinc reacts with nitric acid to form zinc nitrate and hydrogen gas. Zinc nitrate is a white crystalline substance that dissolves in water easily. Hydrogen gas is a colorless, odorless gas.The balanced chemical equation for this reaction is derived by ensuring that the total number of atoms of each element in the reactants is equal to the total number of atoms of the same element in the products. The coefficients in front of each substance show the number of atoms or molecules of each substance needed for the reaction to occur.In this case, one atom of zinc reacts with one molecule of nitric acid to form one molecule of zinc nitrate and one molecule of hydrogen gas.

The reaction between zinc and nitric acid is an exothermic reaction as heat is released during the reaction.The reaction between zinc and nitric acid is an important reaction as it is used in the production of zinc nitrate, which is used in the manufacture of other zinc compounds.

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To solve this problem, we can use the combined gas law, which states that the ratio of initial pressure, volume, and temperature is equal to the ratio of final pressure, volume, and temperature. The formula is as follows:

(P₁ * V₁) / T₁ = (P₂ * V₂) / T₂

Given:

Initial volume (V₁) = 447 mL

Initial temperature (T₁) = 106 ºC

Final volume (V₂) = 227 mL

We need to find the final temperature (T₂). Let's assume the initial and final pressures are constant, so we can ignore them.

Now, we can plug in the values into the formula:

(447 mL * T₂) / (106 ºC) = (227 mL * T₁) / (106 ºC)

Simplifying the equation:

447 mL * T₂ = 227 mL * 106 ºC

T₂ = (227 mL * 106 ºC) / 447 mL

T₂ ≈ 54 ºC

Therefore, the final temperature of the gas is approximately 54 ºC.

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Answer:

answer is B

Explanation:

hope I helped

The wavelength of the radio waves is longer than that of the microwaves while microwaves have a larger frequency than  radio waves.

We know that the frequency of a wave refers to the number of cycles that is covered by a wave in a second. We also know that the wavelength has to do with the horizontal distance that is covered by a wave.

Both the radio waves and the microwaves are known to the part of the electromagnetic spectrum. These are the waves that are known to have the same velocity and are able to pass through a vaccum.

Though all  the electromagnetic waves do have the same speed, they do not have the same frequency, wavelength and energy. It is known that the wavelength is inversly related to the frequency of the wave. As such, the greater the wavelength, the smaller the frequency.

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The balanced chemical equation for KClO3 decomposition is: 2KClO3(s) → 2KCl(s) + 3O2(g). 0.061 moles of KClO3 reacted. Rounded to 3 significant figures, the answer is 0.0610 moles of KClO3.

How many moles of KClO3 reacted?

The balanced chemical equation for KClO3 decomposition is:

2KClO3(s) → 2KCl(s) + 3O2(g)

According to the equation, for every 3 moles of O2 produced, 2 moles of KClO3 react. Therefore, the number of moles of KClO3 can be calculated as:

moles of KClO3 = (2/3) × moles of O2

To find the moles of O2 produced, we need to use the molar mass of O2, which is 32 g/mol. As a result, the number of moles of O2 is:

moles of O2 = mass of(O2) / molar mass(O2)

moles of O2 = 2.94 g / 32 g/mol

moles of O2 = 0.092 mol

Now we can calculate the moles of KClO3:

moles of KClO3 = (2/3) × moles of O2

moles of KClO3 = (2/3) × 0.092 mol

moles of KClO3 = 0.061 mol

Therefore, 0.061 moles of KClO3 reacted. Rounded to 3 significant figures, the answer is 0.0610 moles of KClO3.

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Therefore, the empirical formula of the compound if a sample contains 5.28 grams of Sn and 3.37 grams of F is SnF4 S n F 4 .

The simplest whole number ratio of atoms in a molecule is its empirical formula in chemistry. The empirical formula of sulfur monoxide, or SO, and disulfur dioxide, or S2O2, are two straightforward examples of this idea. As a result, both the sulfur and oxygen compounds sulfur monoxide and disulfur dioxide share the same empirical formula. However, their molecular formulae, which describe the number of atoms in each molecule of a chemical compound, are different.

The configuration or quantity of atoms are not mentioned in an empirical formula. It is typical for many macromolecules like silicon dioxide and ionic chemicals like calcium chloride (CaCl2) (SiO2).

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The density of the gas is  0.0340 g/L, moles of gas in the bulb is 0.00124 mol and apparent molar mass is 111.3 g/mol.

To determine the density of the gas, use the ideal gas law:

PV = nRT

where P = pressure, V = volume, n = number of moles, R = gas constant, and T = temperature.

Since the volume and temperature are constant:

(P/n) = constant

Therefore, the density (ρ) of the gas is given by:

ρ = (m-m₀)/V = (Δm)/V

where m = mass of the bulb filled with the gas, m₀ = mass of the evacuated bulb, and Δm = m - m₀ is the mass of the gas.

Substituting the given values:

Δm = 22.651 g - 22.513 g = 0.138 g

V = 4.050 L

ρ = 0.138 g / 4.050 L = 0.0340 g/L

To find the number of moles of gas in the bulb, use the equation:

n = PV/RT

Substituting the given values:

n = (0.0250 atm)(4.050 L) / (0.0821 L·atm/mol·K)(289.2 K) = 0.00124 mol

Finally, to find the apparent molar mass of the gas, use the equation:

M = m/n

where M = molar mass of the gas and m = mass of the gas.

Substituting the given values:

M = 0.138 g / 0.00124 mol = 111.3 g/mol

Therefore, the density of the gas is 0.0340 g/L, there are 0.00124 mol of gas in the bulb, and the apparent molar mass of the gas is 111.3 g/mol.

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Answer:

It contains 6.02*10^23 molecules

Explanation:

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Answer:

The given equation is not balanced.

On the left-hand side, there are 3 atoms of potassium (3K), 3 atoms of bromine (3Br), and 1 atom of iron (Fe).

On the right-hand side, there is 1 atom of bromine (Br), 3 atoms of potassium (3K), and 1 atom of iron (Fe).

The number of atoms of each element should be equal on both sides of the equation. Therefore, to balance the equation, we need to adjust the coefficients of the molecules.

The balanced equation is:

3kBr + FeCl3 -> FeBr3 + 3KCl

The balanced equation has 3 atoms of potassium (3K), 3 atoms of bromine (3Br), 1 atom of iron (Fe), and 3 atoms of chlorine (3Cl) on both sides of the equation.