Lets do a little more practice with titration calculations: If it takes 83 mL of a 0.45 M standard solution to neutralize 235 mL of an analyte solution, then the concentration of the analyte solution is Type your answer here M. It takes 12.5 mL of a 0.30 M HCl solution to neutralize 285 mL of NaOH solution, then the concentration of the NaOH solution is Type your answer here M.

We do not have enough information to deduce the isotope that would have nine neutrons. Option 5

The atom is composed of subatomic particles. The subatomic particles that are in the atom are such that we have the electrons that are negatively charged, the protons that are positively charged and the neutrons that are uncharged.

Now, we know that the number of neutrons is obtained as the difference between the mass number and the atomic number of the atom. In this case, we only have the mass numbers and not the atomic numbers thus we do not have sufficient information.

Learn more about neutrons:https://brainly.com/question/28992636

#SPJ1

Answer:

Explanation:

Decomposition reaction, also known as analysis or dissociation, is a type of chemical reaction in which a compound breaks down into simpler substances or elements. In this reaction, a single reactant undergoes a chemical change and produces two or more products.

The decomposition reaction can be represented by the general equation:

AB → A + B

Where AB is the reactant, and A and B are the products. The reactant AB is usually a compound, and it breaks down into its constituent elements or simpler compounds.

There are different types of decomposition reactions, including:

Thermal decomposition: It occurs when a compound is heated, resulting in its decomposition into simpler substances. For example, the thermal decomposition of calcium carbonate (CaCO3) produces calcium oxide (CaO) and carbon dioxide (CO2):

CaCO3 → CaO + CO2

Electrolytic decomposition: It takes place when an electric current is passed through an electrolyte, causing it to break down into its component ions. For instance, the electrolysis of water (H2O) leads to the decomposition into hydrogen gas (H2) and oxygen gas (O2):

2H2O → 2H2 + O2

Photochemical decomposition: It occurs when a compound undergoes decomposition due to exposure to light energy. Chlorine gas (Cl2) can decompose into chlorine atoms (Cl) under the influence of light:

Cl2 → 2Cl

These are just a few examples of decomposition reactions. They are important in various chemical processes and are used in industries, laboratory experiments, and natural phenomena. By understanding and controlling decomposition reactions, scientists can gain insights into the behavior of different compounds and develop practical applications in fields such as chemistry, materials science, and environmental science.

Answer:

Explanation:

reaction in which a compound breaks down into simpler substances or elements

Answer:

Mass of lime produced = 19.0 g

Explanation:

Given data:

Mass of lime produced = 11.2 g

Mass of limestone react = ?  

Solution:

Chemical equation:

CaCO₃     →      CaO + CO₂

Balanced chemical equation:

CaCO₃     →      CaO + CO₂

Number of moles of lime:

Number of moles = mass / molar mass

Molar mass of lime 56.1 g/mol

Number of moles = 11.2 g/ 56.1 g/mol

Number of moles = 0.19 mol

Now we will compare the moles of CaO and CaCO₃  from balance chemical equation.

                    CaO        :           CaCO₃

                      1             :             1

                     0.19          :          0.19

Mass of limestone react:

Mass = number of moles × molar mass

Mass = 0.19 mol × 100.1 g/mol

Mass = 19.0 g

The molecular formula of the isolated hormone is C17H34O8.

To determine the molecular formula of the isolated hormone, we need to analyze the combustion products and the elemental composition of the compound.

From the combustion analysis, we know that 3.15 g of the isolated hormone produces 7.72 g of CO and 2.25 g of H2O. We can calculate the number of moles of carbon and hydrogen in the compound based on these values.

Moles of carbon (C) = 7.72 g CO / (28.01 g/mol CO) = 0.275 mol C

Moles of hydrogen (H) = 2.25 g H2O / (18.015 g/mol H2O) = 0.125 mol H

Next, we can calculate the moles of oxygen (O) present in the compound by subtracting the moles of carbon and hydrogen from the total moles of the compound.

Moles of oxygen (O) = (0.275 + 0.125) mol - 1 mol = 0.4 mol O

Now, we can determine the empirical formula by dividing the number of moles of each element by their lowest value. In this case, the lowest value is 0.125 mol H.

Empirical formula: C2H4O

To find the molecular formula, we need to determine the ratio between the empirical formula molar mass and the given molar mass of 252.32 g/mol.

Molar mass of empirical formula: 12.01 g/mol (C) + 1.008 g/mol (H) + 16.00 g/mol (O) = 29.02 g/mol

Molar mass ratio = 252.32 g/mol / 29.02 g/mol ≈ 8.68

Multiplying the subscripts in the empirical formula by 8.68, we get the molecular formula:

Molecular formula: C17H34O8

For more such questions on  molecular formula visit:

https://brainly.com/question/26388921

#SPJ8

AnswerB:

Explanation:

Heat can travel from one place to another in different ways. The different methods of heat transfer are conduction, convection and radiation. Here heat transfers from the glass to the ice through conduction.

The process of transmission of energy from one particle of the medium to another with the particles being in direct contact with each other is defined as the conduction. It is also known as the thermal conduction or heat conduction.

In conduction an area of higher kinetic energy transfers thermal energy towards the lower kinetic energy area. Here a transfer of heat energy occurs from tea molecules to the ice cube. Due to the transfer of heat melting of ice occurs.

As the ice melts, the tea starts cooling while heating the ice cube. So the ice cools down the tea. The tea will be melted by the ice here.

To know more about conduction, visit;

https://brainly.com/question/12136944

#SPJ2

The term aldol condensation has to do with a reation in which a nucleophile attacks the carbonyl group of an aldehyde.

The term aldol condensation has to do with a reation in which a nucleophile attacks the carbonyl group of an aldehyde or a ketone to convert it to the enolate from which attacks another aldehyde or ketone at the carbonyl carbon to form the required product.

The structure of the organic product from the aldol condensation involving cyclopentanone is shown in the image attached to this answer.

Learn more about aldol condensation: https://brainly.com/question/9415260?:

Answer:

evaporation

Explanation:

When water is heated, it evaporates. The molecules move and vibrate so quickly that they escape into the atmosphere as molecules of water vapor. Heat from the sun, or solar energy, powers the evaporation process.

Answer: can be considered to be both an acid and a base

Explanation:

A medical examiner can differentiate between death by suffocation and death by carbon monoxide poisoning by conducting an autopsy and examining the body, as well as investigating the circumstances surrounding the death.

Autopsy: During an autopsy, the medical examiner will examine the body for physical signs of suffocation, such as bruises, petechiae (small red or purple spots on the skin caused by bleeding), or damage to the throat, lungs, and airways.

In cases of carbon monoxide poisoning, the medical examiner may look for signs such as cherry-red skin, mucous membranes, and organs, which can indicate high levels of carbon monoxide in the bloodstream.

Toxicology: The medical examiner may also conduct toxicology tests to detect the presence of carbon monoxide in the blood. High levels of carbon monoxide can indicate carbon monoxide poisoning.

Circumstances of death: The medical examiner will also investigate the circumstances surrounding the death, such as whether the victim was found in an enclosed space or near a source of carbon monoxide, such as a car or generator. In cases of suffocation, the circumstances may suggest that the victim was intentionally or accidentally smothered or strangled.

In summary, a combination of physical examination, toxicology tests, and investigation of the circumstances surrounding the death can help a medical examiner differentiate between death by suffocation and death by carbon monoxide poisoning.

For more question on suffocation click on

https://brainly.com/question/2234401

#SPJ11

Answer:

the heat differs to the air as heat is energy and energy likes to travel

Reduction involves the either the addition of hydrogen and removal of oxygen.

Reduction involves the removal of oxygen.

This implies there is a loss of oxygen in reduction.

This can be represented in the extraction of iron from it ores.

Fe₂O₃ + 3CO →  2Fe + 3CO₂

Reduction is also the addition of hydrogen. This implies it is the gain of hydrogen.

For example

CH₃CHO → CH₃CH₂OH

learn more on reduction here: https://brainly.com/question/9485345

#SPJ12

The empirical formula represents the simplest whole-number ratio of atoms in a compound. To determine the empirical formula for C4H10O2, we need to find the simplest ratio of carbon, hydrogen, and oxygen atoms.

Let's start by determining the number of carbon atoms.

The subscript 4 in C4H10O2 indicates that there are four carbon atoms present.

Next, let's determine the number of hydrogen atoms. The subscript 10 in C4H10O2 indicates that there are ten hydrogen atoms.

Finally, let's determine the number of oxygen atoms. The subscript 2 in C4H10O2 indicates that there are two oxygen atoms.

To find the simplest whole-number ratio, we need to divide the number of atoms by their greatest common divisor (GCD).

The GCD of 4, 10, and 2 is 2. Dividing each number by 2, we get:

C4H10O2 divided by 2:

Carbon: 4 ÷ 2 = 2

Hydrogen: 10 ÷ 2 = 5

Oxygen: 2 ÷ 2 = 1

The simplest whole-number ratio is C2H5O, which corresponds to option (a) in the given choices.

The empirical formula for C4H10O2 is C2H5O.

To know more about  empirical formula, visit

https://brainly.com/question/1603500

#SPJ11

Answer:

2.481cm³

Explanation:

this is general has equation so the formula is

P1V1/T1 = P2V2/T2

At STP, pressure is 1.01*10⁵ and temperature is 273K

((1.20*10³)400)/(250+273) = ((1.01*10⁵)V2/(273)

V2 = 2.481cm³

It is dangerous to mix chlorine and vinegar together as cleaner because that would produce a large amount of chlorine gas by shifting the equilibrium to the left.

As per the Le Chatelier's principle, if the equilibrium of a reaction is disturbed by changing any property of the reaction, then the reaction will automatically shift in that direction which would compensate the effect of the change in property, in order to establish the equilibrium again.

In the reaction,

Cl₂(g) + 2NaOH(aq) ⇄ NaOCl(aq) + NaCl(aq) + H₂O(l)

Currently this reaction is in equilibrium, but if the concentration of any of the product is added in the system, the equilibrium will be disturbed, to established the equilibrium again, the the reaction will shift towards left and more and more amount of reactant will be formed, and more and more chlorine gas will be formed which is toxic.

Now to the doubt asked in the question,

If vinegar is added to the system, the amount of NaOH will be consumed which will decrease the concentration of NaOH and the concertation of water will increase because of acid water neutralization reaction.

The increased amount of water and the decreased amount of NaOH will heavily shift the equilibrium to the Left which is again producing chlorine gas which is not good.

To know more about Le Chatelier's principle, visit,

https://brainly.com/question/2943338

#SPJ9

The percent ionization of the 0.225 M solution of benzoic acid is approximately 0.79%.

To determine the percent ionization of benzoic acid, we need to use its acid dissociation constant (Ka) and the initial concentration of the acid. The percent ionization can be calculated using the following formula:

% Ionization = (concentration of ionized form / initial concentration) x 100

First, we need to calculate the concentration of the ionized form of benzoic acid. Since benzoic acid ionizes into H+ and C6H5COO- ions, and assuming complete ionization, the concentration of the ionized form is equal to the concentration of H+ ions formed during the ionization.

Since the Ka value of benzoic acid is given as 6.3 x 10^-5, we can assume that the concentration of H+ ions formed is equal to the concentration of benzoic acid that has ionized.

[H+] = [C6H5COOH] x √(Ka)

[H+] = 0.225 M x √(6.3 x 10^-5)

[H+] = 0.225 M x 0.0079

[H+] = 0.00178 M

Now, we can calculate the percent ionization:

% Ionization = (0.00178 M / 0.225 M) x 100

% Ionization = 0.791%

Therefore, the percent ionization of the 0.225 M solution of benzoic acid is approximately 0.79%.

learn more about "ionization":- https://brainly.com/question/30831422

#SPJ11

Answer:

Carbon

Explanation:

Steel is an alloy of iron and carbon. Stainless steels are steels containing at least 10.5% chromium, less than 1.2% carbon and other alloying elements

Answer: B

Explanation:Steel is an alloy of iron and carbon.

To find the moles present in 83.20 grams of manganese we must use the molar mass of manganese. This mass is equal to 54.94g/mol. So the moles of manganese (Mn) will be:

Answer: 83.20 grams of manganese are equivalent to 1.51 moles

Answer:

valence electrons are the electrons that are located in the outermost electron shell of an element. Knowing how to find the number of valence electrons in a particular atom is an important skill for chemists because this information determines the kinds of chemical bonds that it can form and, therefore, the element's reactivity

Explanation:

Answer:

here are several resons that fossil foraminifera are especially valuable for determining the relative ages of marine rock layers. They have been around since the Cambrian, over 500 million years ago. They show fairly continuous evolutionary development, so different species are found at different times.

The compound that is involved in the reaction with silver nitrate to form silver chloride and iron (III) nitrate is Iron (III) chloride.

The displacement reaction is the one in which the more reactive element displaces the less reactive element from the compound forming a new compound.

The formation of silver chloride and iron (III) nitrate was followed by the double displacement reaction. The silver in silver nitrate was replaced by the iron forming iron(III) nitrate, and the chloride from the Iron chloride reacted with silver forming silver chloride.

Thus, the compound that reacts with Silver nitrate in the double displacement reaction is Iron(III) chloride.

Learn more about displacement reaction, here:

https://brainly.com/question/3172917

#SPJ1

Answer:

Yes Because the calculated volume is more accurate because you are able to measure the smaller dimensions.

~Apex lab

I. The object's temperature change.

II. The object's original volume

Thermal expansion is the process through which a solid object's volume generally tends to grow as its temperature rises.

Therefore, the factors that govern how much a solid object's volume changes include;

I. The object's temperature change.

II. The object's original volume

In the end, this suggests that when a solid item is heated, its atoms vibrate quickly around their fixed locations, increasing the volume of the thing.

In conclusion, all three (3) states of matter exhibit the scientific phenomena known as thermal expansion;

An object can heat up and its surrounds can cool down when heat is transmitted to it from its surroundings. When heat is converted to energy, it becomes part of the object's internal energy.

To know more about change in temperature, click on the link below:

https://brainly.com/question/20714323

#SPJ4

Considering the two acids and bases involved, the reverse reaction is favored.

The term reversible reaction refers to a reaction that can go either forward or backwards depending on the conditions of the reaction.

We must recall that acetic acid is a weak acid hence the equilibrium position would always lie towards the left hand side of the equation. Hence considering the two acids and bases involved, the reverse reaction is favored.

Learn more about reversible reaction:https://brainly.com/question/8592296

Answer:

D. Is the correct Option!

----------------------------------------

Hope this helps!!! :)

Answer:

t = 42.4 years

Explanation:

To find the amount of time needed for the sample to decay, you need to use the half-life equation:

\(N(t) = N_0(\frac{1}{2})^{t/h}\)

In this equation,

-----> N(t) = final mass (mg)

-----> N₀ = initial mass (mg)

-----> t = time passed (yrs)

-----> h = half-life (yrs)

You can find how much time passed by plugging the given variables into the equation and solving for "t". The final answer should have 3 sig figs like the given values.

N(t) = 9.38 mg                       t = ? yrs

N₀ = 25.0 mg                        h = 30.0 yrs

\(N(t) = N_0(\frac{1}{2})^{t/h}\)                                <----- Half-life equation

\(9.38mg = 25.0mg(\frac{1}{2})^{t/30.0yrs}\)              <----- Insert variables

\(0.3752 = (\frac{1}{2})^{t/30.0yrs}\)                          <----- Divide both sides by 25.0 mg

\(ln(0.3752) = ln((\frac{1}{2})^{t/30.0yrs})\)              <----- Take the natural log of both sides

\(ln(0.3752) = \frac{t}{30.0yrs} ln(\frac{1}{2})\)                   <----- Rearrange the exponent

\(-9.803 = \frac{t}{30.0yrs} (-0.6931)\)                 <----- Solve the natural logs

\(1.1414= \frac{t}{30.0yrs}\)                                  <----- Divide both sides by -0.6931

\(42.4 yrs= t\)                                        <----- Multiply both sides by 30.0 yrs

The bag material is of insulator type. Heat does not no flow through insulator. The outside bag temperature reaches 54 ºC.

The study of thermodynamics examines how heat, work, temperature, as well as energy are related. The general topic of thermodynamics is the energy that is transferred from one location or form to another. The fundamental idea would be that warmth is a type of energy that is equivalent to a specific quantity of mechanical labor.

The outside bag temperature reaches 54 ºC (but no higher) within 2 minutes. The temperature does not go above 50 ºC, and does not go below 40 ºC for at least 25 minutes. The temperature reaches 8 ºC in less than 2 minutes. The temperature does not go below 10 ºC, and stays below 20 ºC for at least 15 minutes. The bag material is of insulator type.

Therefore, the bag material is of insulator type.

To learn more about thermodynamics, here:

https://brainly.com/question/21858980

#SPJ1

One calcium ion \((Ca2^+)\)and two bromide ions\((Br^-)\)are produced when \(CaBr^2\) (calcium bromide) dissolves in water.

The ionic compound calcium bromide \((CaBr^2)\) is made up of calcium cations \((Ca2^+)\)and bromide anions \((Br^-)\)in a 1:2 ratio. It is a crystalline white substance that is very soluble in both alcohol and water.

Therefore, One \(Ca2^+\) ion and two Br- ions are produced by each formula unit of\(CaBr^2\) in solution. This is due to the fact that the ionic compound \(CaBr^2\) dissociates in water, causing the compound to separate into its individual ions, which are then solvated by water molecules.

Learn more about calcium bromide here : brainly.com/question/30581878

#SPJ1