will mark brainliest for explanation What is formed when a solid dissolves in a liquid?
Soluble
Insoluble
Solvent
Solute
Solution

The balanced equation is written as

2HCl + Ca(OH)₂ --> CaCl₂+ 2H₂O. From using the mole ratio, the volume of 0.01154 M HCl needed to titrate 20.00 mL of 0.0125 M Ca(OH)₂ is equals to 43.3 mL.

Mole ratio is defined as a ratio between the number of moles of any two components in a balanced chemical reaction/equation. We have, two components Hydrochloric acid, HCl and calcium hydroxide, Ca(OH)₂ for reaction.

Volume of calcium hydroxide solution

V₁ = 20.00 mL = 0.020 L

Molarity of HCl, M₂ = 0.01154 M

Molarity of Ca(oh)₂, M₁ = 0.0125 M

Chemical reaction/equation for components,HCl + Ca(OH)₂-->CaCl₂+ H₂O

Balanced equation is written as

2HCl + Ca(OH)₂ --> CaCl₂+ 2H₂O

Now, mole ratio of HCl to Ca(OH)₂ is 2:1 that is moles of HCl are two times the mol of Ca(OH)₂ to form the respective products. Let V be the needed volume of hydrochloric acid to titrate Ca(OH)₂ solution. Using the molarity formula, Molarity of Ca(OH)₂ = moles of Ca(OH)₂/volume of Ca(OH)₂

=> 0.0125 mol/L = moles of Ca(OH)₂/0.02

=> moles of Ca(OH)₂ = 0.00025 moles

From mole ratio, moles of HCl are required to neutralize, Ca(OH)₂= 0.00025 moles Ca(OH)₂ (2 moles HCl/1 mole Ca(OH)₂ = 0.0005 moles

Now, using molarity formula for HCl,

M₂ = moles of HCl/Volume of HCl

=> 0.01154 Mol/L = 0.0005 moles/V

=> V = 0.0433 L = 43.3 mL ( 1L = 1000 mL).

Hence, required value of volume is 43.3 mL.

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Answer: Nuclei combine to form a heavier nucleus, releasing energy. ​

Explanation:   e.g two deuterium nucleus (Hydrogen-2 isotopes) forms an He nucleus and energy is released.

Nuclear fusion is when nuclei combine to form heavier nuclei, releasing energy.

Nuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles (neutrons or protons). The difference in mass between the reactants and products is manifested as either the release or absorption of energy.

The release of energy with the fusion of light elements is due to the interplay of two opposing forces: the nuclear force, a manifestation of the strong interaction, which holds protons and neutrons tightly together in the atomic nucleus; and the Coulomb force, which causes positively charged protons in the nucleus to repel each other.

Nuclear fusion is also observed in stars.

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Answer:

Explanation:

Gloves

Answer:

The first thing that you need to do here is to figure out the mass of the sample.

To do that, you can use its volume and the fact that aluminium is said to have a density of

2.702 g cm

−

3

, which implies that every

1 cm

3

of aluminium has a mass of

2.702 g

.

Explanation:

Answer:

Lowering activation energy of a reaction.

Explanation:

Activation energy is the minimum amount of energy required by the reactants just to be converted to products.

Since catalysts increase the rate of reaction, activation complex is reached in short period of time hence activation energy is lowered.

Answer:

c

Explanation:

because is the measurement of amplitude

Answer:

seems like the simp is you tbh

-Sumin <3

First, that’s sus. Second, it sounds even more sus. Third, you should stop being sus. Fourth, stop the sus that I just witnessed right now

Answer:

greater than

Explanation:

Answer

Explanation:

Okay, let's solve this step-by-step:

1) Initially at 150.0°C, the pressure in the can is 890.0 mm Hg

2) Convert mm Hg to atm (atmospheres): 890.0 mm Hg / 760 mm Hg/atm = 1.165 atm

3) The temperature changes from 150.0°C to 35.0°C. This is a decrease of 150.0 - 35.0 = 115.0°C

4) For an ideal gas, PVT=kT (pressure x volume x temperature = constant k). Since volume (V) remains constant,

the pressure (P) is inversely proportional to temperature (T).

5) So final pressure = (initial pressure) * (final T) / (initial T)

= (1.165 atm) * (35.0 + 273.15 K) / (150.0 + 273.15 K)

= 0.392 atm

In atmosphere (atm): 0.392

Showing all work:

Initial pressure (mm Hg): 890.0

Converted to atm: 890.0 / 760 = 1.165 atm

Initial T (°C): 150.0

Initial T (K): 150.0 + 273.15 = 423.15 K

Final T (°C): 35.0

Final T (K): 35.0 + 273.15 = 308.15 K

PVT = kT (constant k)

So P ∝ 1/T

Final P (atm) = (1.165 atm) * (308.15 K) / (423.15 K) = 0.392 atm

In atm: 0.392

Let me know if you have any other questions!

The new pressure in the can will be 0.851 atm when it is cooled to 35.0 degrees C.

The combined gas law is given by:

P₁/T₁ = P₂/T₂

where P₁ and T₁ are the initial pressure and temperature, and P₂ and T₂ are the final pressure and temperature. The volume is constant, so we can ignore it in this problem.

First, we need to convert the initial and final temperatures to Kelvin:

T₁ = 150.0 + 273.15 = 423.15 K

T₂ = 35.0 + 273.15 = 308.15 K

Next, we can plug in the values and solve for P₂:

P₁/T₁ = P₂/T₂

(890.0 mmHg)/(423.15 K) = P₂/308.15 K

P₂ = (890.0 mmHg)(308.15 K)/(423.15 K)

P₂ = 647.3 mmHg

Finally, we can convert the pressure to atm:

P₂ = 647.3 mmHg × (1 atm/760 mmHg)

P₂ = 0.851 atm

Therefore, the new pressure in the can will be 0.851 atm when it is cooled to 35.0 degrees C.

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The amount of concentrated solution needed is (0.286 M)(65 mL) / C M, and the amount of water needed is 65 mL minus the volume of the concentrated solution.

To calculate the molarity of Kool Aid desired, we need to determine the number of moles of Kool Aid powder and sugar in the package. Since the molecular formula for sugar is C12H22O11, we can calculate its molar mass as follows:

Molar mass of C12H22O11 = (12 * 12.01) + (22 * 1.01) + (11 * 16.00)

= 144.12 + 22.22 + 176.00

= 342.34 g/mol

Given that the package contains 4.25 grams of Kool Aid powder, we can calculate the number of moles of Kool Aid powder using its molar mass:

Number of moles of Kool Aid powder = Mass / Molar mass

= 4.25 g / 342.34 g/mol

≈ 0.0124 mol

Similarly, for the sugar, which has a molar mass of 342.34 g/mol, we can calculate the number of moles of sugar using its mass:

Number of moles of sugar = Mass / Molar mass

= 192.00 g / 342.34 g/mol

≈ 0.5612 mol

Now, to calculate the molarity of the desired Kool Aid solution, we need to determine the volume of water. Given that 1.06 quarts is equal to 1 liter, and we have 2.00 quarts of water, we can convert it to liters as follows:

Volume of water = 2.00 quarts * (1.06 liters / 1 quart)

= 2.12 liters

To find the molarity, we use the formula:

Molarity (M) = Number of moles / Volume (in liters)

Molarity of Kool Aid desired = (0.0124 mol + 0.5612 mol) / 2.12 L

≈ 0.286 M

To prepare 65 mL of the desired molarity, we can use dilution calculations. We need to determine the volume of concentrated solution and the volume of water needed.

Let's assume the concentration of the concentrated Kool Aid solution is C M. Using the dilution formula:

(C1)(V1) = (C2)(V2)where C1 is the initial concentration, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume.

Given that C1 = C M and V1 = V mL, and we want to prepare a final volume of 65 mL (V2 = 65 mL) with a final concentration of 0.286 M (C2 = 0.286 M), we can rearrange the formula to solve for the volume of the concentrated solution:

(C M)(V mL) = (0.286 M)(65 mL)

V mL = (0.286 M)(65 mL) / C M

So, the amount of concentrated solution needed is (0.286 M)(65 mL) / C M, and the amount of water needed is 65 mL minus the volume of the concentrated solution.

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The moles of water that are produced from 373 moles of ammonia present in any chemical reaction is 746 moles.

Stoichiometry of the reaction gives idea about the amount of entities present in any chemical reaction before and after the reaction.

Given chemical reaction is:

3Al + 3NH₄ClO₄ → Al₂O₃ + AlCl₃ + 3NO + 6H₂O

From the stoichiometry of the reaction it is clear that:

3 moles of Al = produces 6 moles of H₂O

373 moles of Al = produces 6/3×373 = 746 moles of H₂O

Hence required moles of water is 746 moles.

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Rechargeable batteries use a reversible reaction medium to convert electrical current to a form of chemical energy which can be stored for future use.

A rechargeable battery is a type of battery that can be charged many times by passing electric current through the cells in a reversible reaction.

When electrical energy from an outside source is applied to a secondary cell (reachargeable battery), the negative to positive electron flow that occurs during discharge is reversed, and the cell's charge is restored. This process is called reversible reaction.

Thus, rechargeable batteries use a reversible reaction medium to convert electrical current to a form of chemical energy which can be stored for future use.

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To produce one molecule of glucose, 6 molecules of carbon dioxide (\(CO_{2}\)), 18 molecules of adenosine triphosphate (ATP), and 12 molecules of nicotinamide adenine dinucleotide phosphate (NADPH) are required.

Glucose, a six-carbon sugar, is synthesized through the process of photosynthesis in plants. It involves the Calvin cycle, which incorporates carbon dioxide, ATP, and NADPH to produce glucose. For each molecule of glucose formed, 6 molecules of carbon dioxide are required.

The energy needed for glucose synthesis is provided by ATP, which is an energy-rich molecule. In the Calvin cycle, the synthesis of one glucose molecule requires 18 molecules of ATP.

NADPH, a coenzyme involved in energy transfer reactions, is required for the reduction of carbon dioxide during the Calvin cycle. In the process, 12 molecules of NADPH are utilized to produce one molecule of glucose. These components play crucial roles in capturing and storing energy, as well as providing carbon atoms for the formation of glucose, which serves as a vital energy source for organisms.

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Answer:

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question we have

mass = 56 × 3.5

We have the final answer as

Hope this helps you

The student at the lab table near you spills a liquid corrosive chemical on his arm. flush the burn with water would you do first  option (C)

The first step in treating a chemical burn is to flush the affected area with water for at least 20 minutes. Therefore, the correct answer is option c) flush the burn with water. This will help to remove any remaining chemical and minimize the extent of the burn.

Option a) remove the chemical with a clean cloth may further spread the chemical and cause more harm. Option b) put a sterile dressing over the burn site may be done after flushing with water to prevent contamination but should not be done first. Option d) have the person immediately remove contaminated clothes can be done after the flushing of the affected area.

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Answer: Malleability

Explanation: Is because metals have mobile electrons in their s orbitals.

Hope this helps..

Answer:

The answer to this question is mobile electrons in s orbitals.

The answer to the following question on edg is directional electrons in p orbitals.

Explanation:

Sodium hydroxide is a highly alkaline and caustic chemical compound used in various cleaning and industrial applications. While it is an effective cleaning agent, it is not recommended for use in personal care products like soap and shampoo. Washing with sodium hydroxide can be harmful to the skin and cause various side effects.

Washing with sodium hydroxide is undesirable due to the following reasons: Sodium hydroxide is a strong irritant: Sodium hydroxide can cause irritation to the skin and eyes. When it comes in contact with the skin, it can cause severe burns and damage to the skin cells. If it comes in contact with the eyes, it can cause blindness. The high pH of sodium hydroxide can damage the skin's natural barrier, making it more susceptible to irritants and allergens. Therefore, washing with sodium hydroxide can be harmful to the skin and cause various side effects.

Sodium hydroxide can disrupt the skin's natural pH: The pH of the skin is acidic, ranging from 4.5 to 5.5. This acidity helps to protect the skin from bacteria and other harmful microorganisms. When sodium hydroxide is used for washing, it can disrupt the skin's natural pH and cause it to become more alkaline. This can lead to various skin problems like dryness, irritation, and acne.

Sodium hydroxide can strip the skin of its natural oils: The skin produces natural oils that help to keep it moisturized and healthy. When sodium hydroxide is used for washing, it can strip the skin of its natural oils, leaving it dry and dehydrated. This can cause the skin to become itchy, flaky, and irritated.

In conclusion, washing with sodium hydroxide can be harmful to the skin and cause various side effects. Therefore, it is not recommended for personal care products like soap and shampoo.

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Answer:

Explanation:

The estimated enthalpy of triple bonds between nitrogen in a nitrogen molecule is -315kJ/mole.

To estimate the enthalpy of the triple bond between nitrogen atoms in an N2 molecule, we can use the enthalpies of formation of N2 and the individual nitrogen atoms, which are listed in Appendix C.

The enthalpy of formation (ΔHf) of a substance is the change in enthalpy when one mole of the substance is formed from its constituent elements in their standard states (usually at 25°C and 1 atm). For example, the enthalpy of formation of N2(g) is defined as:

N2(g) → 2N(g) ΔHf = 946 kJ/mol

This means that it takes 946 kJ of energy to form one mole of N2 from its constituent nitrogen atoms.

On the other hand, the enthalpy change for breaking the N2 molecule into two nitrogen atoms is equal in magnitude but opposite in sign to the enthalpy of formation of N2, because breaking a bond requires energy input.

Therefore, we have: N2(g) → 2N(g) ΔHf = -946 kJ/mol

To estimate the enthalpy of the triple bond, D(N‚N), we can assume that breaking the N2 molecule into two nitrogen atoms requires breaking three equivalent bonds, each with the same bond energy. Therefore:

D(N‚N) = ΔHf/N2 ÷ 3

Substituting the values, we get:

D(N‚N) = (-946 kJ/mol)/3

D(N‚N) = -315 kJ/mol

Therefore, the estimated enthalpy of the triple bond between nitrogen atoms in an N2 molecule is -315 kJ/mol. This means that breaking the N2 molecule into two nitrogen atoms requires an input of 315 kJ of energy per mole of N2. Conversely, forming an N2 molecule from two nitrogen atoms releases 315 kJ of energy per mole of N2.

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The total number of calories required to melt 100 grams of ice exists

33.4kJ.

The specific latent heat (L) of material exists as a measurement of the heat energy (Q) per mass (m) released or soaked during a phase transition and exists described through the formula Q = mL exists often just named the "latent heat" of the material.

Let the equation be Q = Lm

where Q exists the amount of heat required to melt the ice

L or \(L_{ice}\) exists as the Latent Heat of melt for ice.

\(L_{ice} = 3.34*10^5\) J/kg

m exists the mass of ice that exists to melt.

m = 100g = 0.1kg.

So: Q = 3.34⋅\(10^5\) J/kg.0, 1kg = 33,400J = 33.4kJ.

The total number of calories required to melt 100 grams of ice exists

33.4kJ.

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Acid/base extraction is a technique of separating a mixture of organic compounds. It involves using different solvent phases to extract components based on their solubility properties. The basic procedure of acid/base extraction involves extracting the acidic and basic components of the mixture by the use of an acid and base.

Acid/base extraction is a technique of separating a mixture of organic compounds. It involves using different solvent phases to extract components based on their solubility properties. The basic procedure of acid/base extraction involves extracting the acidic and basic components of the mixture by the use of an acid and base. Here, the given extract is a NaOH extract containing the phenolate. Phenolate is a conjugate base of phenol. The HCl addition would be an acid-base reaction between phenolate ion (base) and HCl (acid). When the two are mixed together, the phenolate ion reacts with the H+ ion from HCl to form phenol and the chloride ion (Cl-) as follows:

PhO- + H+ → PhOH

PhO- + HCl → PhOH + Cl-

The HCl addition would thus produce Phenol and Chloride ion as products. Phenol is an aromatic organic compound that is commonly used as an antiseptic, a disinfectant, and in pharmaceuticals, and in other industries, and Chloride ion is a negatively charged ion that is often used in inorganic chemistry, electrochemistry, and pharmacology. The answer is: The products of the HCl addition are Phenol and Chloride ion.

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The overall order of the reaction is; 2 + (-1) = 1, The reaction is first order overall.

The overall order of a reaction is the sum of the orders of the reactant concentrations in the rate law.

In this case, the rate law is given as:

rate = k[O3]² [O2]⁻¹

The order of the reaction with respect to [O₃] is 2, because the concentration of [O₃] is raised to the power of 2 in the rate law.

The order of the reaction with respect to [O₂] is -1, because the concentration of [O₂] is raised to the power of -1 in the rate law.

Therefore, the overall order of the reaction is:

2 + (-1) = 1

The reaction is first order overall.

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After the calculating we have Test statistic: -3.874.

Critical values: -2.086 and 2.086.

To test if the population mean pH of rainwater is equal to 5.4, we can perform a one-sample t-test.

We have the data:

Population mean (μ) = 5.4

Sample mean (x) = 4.7

Sample standard deviation (s) = 0.8

Sample size (n) = 21

Significance level (α) = 0.05

To calculate the test statistic, we can use the formula:

t = (sample mean - population mean) / (sample standard deviation / sqrt(sample size))

Plugging in the values:

t = (4.7 - 5.4) / (0.8 / √(21))

Calculating:

t ≈ (-0.7) / (0.8 / 4.582)

t ≈ -3.874

The test statistic is approximately -3.874.

To find the critical values, we need to refer to the t-distribution table or use statistical software. At a significance level of α = 0.05 with (n-1) degrees of freedom (n = sample size), the critical values for a two-tailed test are approximately -2.086 and 2.086.

Therefore, the correct answer is:

Test statistic: -3.874.

Critical values: -2.086 and 2.086.

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Volume (in L) of Carbon dioxide : 23.6 L

Avogadro's hypothesis:  

In the same T,P and V, the gas contains the same number of molecules  

So the ratio of gas volume will be equal to the ratio of gas moles  

\(\tt \dfrac{V_1}{n_1}=\dfrac{V_2}{n_2}\)

Combustion of ethane :

\(\tt 2C_2H_6+7O_2\Rightarrow 4CO_2+6H_2O\)

mol ratio of C₂H₆ : CO₂ ⇒ 2 : 4

so the volume of CO₂ :

\(\tt \dfrac{V_1}{n_1}=\dfrac{V_2}{n_2}\\\\\dfrac{11.8}{2}=\dfrac{V_2}{4}\\\\V_2=\boxed{\bold{23.6~L}}\)

Answer:

23.6

Explanation:

Answer:

Gold

Hope it helps

have a good day

Answer:

I think it could be 0.5. I THINK.

Explanation:

Because 0.5*10 = 5

A molecule is made up of two or more atoms held together by chemical bonds in a stable association. The atoms may or may not belong to the same element

Molecules refer to groups of two or more atoms that are held together by chemical bonds in a stable association. This bond is formed when the electrons that orbit the atoms' nucleus intermingle. As a result, the atoms' outermost shells fill up with electrons, providing stability to the molecule. The atoms in a molecule may belong to the same element or to different elements.

When they belong to different elements, the molecule formed is called a compound molecule. For example, carbon dioxide (CO₂) is a compound molecule that consists of one carbon atom and two oxygen atoms. The bond between these atoms is formed because the carbon atom requires two more electrons to fill its outer shell while the oxygen atoms require two electrons each to fill their outer shells, resulting in a stable molecule.

Therefore, a molecule is made up of two or more atoms held together by chemical bonds in a stable association. The atoms may or may not belong to the same element.

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The temperature at which 0.0828 moles of hydrogen would have a pressure of 1.00 atm and a volume of 55.0 L is 743 K .

The ideal gas law is a fundamental equation of state for an ideal gas.

We can use the Ideal Gas Law to solve for the temperature:

PV = nRT

Where

First, we need to convert the number of moles to moles:

n = 0.0828 mol

Next, we can substitute the given values into the Ideal Gas Law and solve for T:

T = PV/nR = (1.00 atm) x (55.0 L) / (0.0828 mol x 0.0821 L·atm/mol·K) = 743 K

Therefore, the temperature at which 0.0828 moles of hydrogen would have a pressure of 1.00 atm and a volume of 55.0 L is 743 K.

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