Solid iron(II) sulfide reacts with aqueous hydrochloric acid to produce aqueous iron(II) chloride and hydrogen sulfide gas . Write a balanced chemical equation for this reaction.

Answer:

you need data that has at least one independent variable in order to plot a graph for a slope of the line

Explanation:

Answer:It is a nuclear process, where energy is produced by smashing together light atoms. It is the opposite reaction of fission, where heavy isotopes are split apart.

Explanation Fusion is the process by which the sun and other stars generate light and heat.

It’s most easily achieved on Earth by combining two isotopes of hydrogen: deuterium and tritium. Hydrogen is the lightest of all the elements, being made up of a single proton and a electron. Deuterium has an extra neutron in its nucleus; it can replace one of the hydrogen atoms in H20 to make what is called “heavy water.”

Answer:

Cancer

Explanation:

Cancer is a genetic disease—that is, it is caused by changes to genes that control the way our cells function, especially how they grow and divide. Genetic changes that cause cancer can happen because: of errors that occur as cells divide.

Oxidation is the process of using oxygen to break down organic compounds in the water, such as certain chemicals, pesticides, and metals. This helps to make.

Oxygen is an essential element for all living things. It is a colorless, odorless, tasteless gas found naturally in air and is the most abundant element in the Earth’s atmosphere. Oxygen is a key component in the respiration process, allowing organisms to convert the energy stored in food into energy they can use. Without oxygen, life as we know it would cease to exist. Oxygen is also necessary for combustion, which allows us to use fire and fuel to power our homes, cars, and other technology. Oxygen is an incredibly important element and without it, nothing could survive.

1. Filtration: Filtration is an important step in treating water to make it safe for drinking. It involves passing the water through a filter to remove any impurities, such as dirt and other particles.

2. Disinfection: Disinfection is the process of using chemicals, such as chlorine, to kill any bacteria and other microorganisms in the water. This is an important step for making water safe for drinking.

3. pH Adjustment: pH is a measure of the acidity or alkalinity of a solution. If the pH of the water is not within the safe range, it can be adjusted using chemicals to make it safe for drinking.

4. Coagulation and Flocculation: Coagulation and flocculation involve adding chemicals to the water to bind together particles of dirt and other impurities. This makes it easier to remove them during the filtration process.

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Answer:

Plants provide us with food, medicine, wood, fuel, and fiber. In addition, they provide shelter for a multitude of other living beings, produce the oxygen we breathe, maintain the soil, regulate humidity and contribute to climate stability.

a. malleable, flexible, and ductile

:))))))))

Here is my Answer:

Answer:

4.34 times 10^24

Explanation:

number of atoms=7.2 times Avogadro's number

                           =7.2 times 6.02 times 10^23

                           =4.34 times 10^24

Answer:

Explanation: we will multiple the amount of moles to the Avogadro's number for example:                                                                                                        

                                     7.2*6*10 to the power 23

Answer:

I'm pretty sure its just the mass of the sample divided by the molar mass

for example if I had like 7g of carbon and wanted to find the moles, I would divide the mass I have (7g) by the molar mass (the atomic mass value on your periodic table, in this case for carbon it would be 14g)

moles = \(\frac{mass}{molarmass} = \frac{7}{14} = 0.5\ moles\)

Hope this helped

Answer:

Explanation:

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

From the question

mass = 7.87 × 15

We have the final answer as

Hope this helps you

\(\\ \bull\tt\leadsto Density=\dfrac{Mass}{Volume}\)

\(\\ \bull\tt\leadsto Mass=Density\times Volume\)

\(\\ \bull\leadsto Mass=1.11(355)\)

\(\\ \bull\leadsto Mass=394.05g\)

Explanation:

one mole contains Avogadro number of particles

So,

40g( the atomic mass) contains 6.023× 10^23 atoms.

so 1 g contains 40÷(6.023×10^23)

so, 52.3 g contains (40×52.3) ÷6.023×10^23

= 3.47× 10^-21

The dosage of 26mg can be prepared using approximately 1.625 mL of the 40mg in 2.5 mL solution.

The dosage of 22mg can be prepared using approximately 1.222 mL of the 36mg per 2 mL strength solution.

To calculate the dosage using ratio and proportion, we can set up a proportion based on the strength of the solution.

40mg in 2.5 mL solution will be used to prepare a 26mg dosage.

Let X represent the mL of the solution needed to prepare the 26mg dosage.

We can set up the proportion as follows:

40mg/2.5mL = 26mg/X mL

Cross-multiplying and solving for X, we have:

40mg * X mL = 2.5mL * 26mg

40X = 65

X = 65/40

X ≈ 1.625 mL

For the second question:

36mg per 2 mL strength solution is used to prepare 22mg.

Let Y represent the mL of the solution needed to prepare the 22mg dosage.

We can set up the proportion as follows:

36mg/2mL = 22mg/Y mL

Cross-multiplying and solving for Y, we have:

36mg * Y mL = 2mL * 22mg

36Y = 44

Y = 44/36

Y ≈ 1.222 mL

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The correct answer is d) thionyl chloride.

Thionyl chloride (SOCl2) is the most commonly used reagent to convert carboxylic acids to acid chlorides. The reaction is typically carried out in the presence of a base, such as pyridine, to help generate the reactive intermediate. The reaction is exothermic, so it is important to work in a cool environment.

The reaction of carboxylic acids with thionyl chloride proceeds in two steps. In the first step, the carboxylic acid reacts with thionyl chloride to form a chlorosulfite intermediate. The chlorosulfite intermediate is then unstable and decomposes to form an acid chloride and sulfur dioxide gas.

The reaction of carboxylic acids with thionyl chloride is a useful synthetic tool for the preparation of acid chlorides. Acid chlorides are reactive intermediates that can be used to prepare a variety of other compounds, such as esters, amides, and amines.

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Explanation:

Ca(OH) is a base

pOH = -Log[OH]

[OH] = 0.05

pOH = -Log(0.05)

pOH = 1.3

pH + pOH = 14

pH = 14 - pOH

pH = 14 - 2

pH = 12.7

The 10. 00 g sample contains 7. 494 g C and 1. 260 g H. 1.25g is the mass of oxygen in gram of oxygen are in the carbohydrate sample.

A body's mass is an inherent quality. Prior to the discoveries of the atom or particle physics, it was widely considered to be tied to the amount of matter within a physical body. It was discovered that, despite having the same quantity of matter in theory, different atoms and elementary particles have varied masses. There are various conceptions of mass in contemporary physics that are theoretically different but physically equivalent.

Mass of sample = mass of carbon + mass of Hydrogen + mass of oxygen

10. 00=  7. 494 +  1. 260 + mass of oxygen

mass of oxygen= 1.25g

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Answer:

the machete

Explanation:

:)

1. The quantity of a material dissolved in a given mass of solvent is known as its molality (m), also known as molal concentration.

2. The mass of a chemical or contamination per volume of water is the parts per million here.

1. The quantity of solvent moles per kilogram is known as molality, which is a property of solutions. The SI unit for molality is mol/kg.

m=mol/kg

2. The measurement unit for pollutant concentration in soil and sediment is parts per million (ppm) (or ppmm). If so, 1 ppm corresponds to 1 milligram of material per kg of solid (mg/kg).

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0.4M is the concentration (in grams per milliliter) of a solution of na2hpo4 when 2.00l of it can be used to prepare 350gml of 5.00l solution.

The inorganic molecule with the formula Na2HPO4 is known as disodium phosphate (DSP), disodium hydrogen phosphate, or sodium phosphate dibasic. It belongs to a group of sodium phosphates. The salt is familiar both in its anhydrous form and in its 2, 7, 8, and 12-hydrate forms. All are white, water-soluble powders, with the exception of the hygroscopic anhydrous salt.

In foods and water softening treatments, it is used with trisodium phosphate. It is used to modify the pH of meals. When making condensed milk, its presence stops coagulation. In powdered products, it serves as an anti-caking ingredient. It is used in puddings and desserts to thicken Jell-O Instant Pudding and cut the cooking time for Cream of Wheat.

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The long form of the periodic table is also known as the extended periodic table or the expanded periodic table. It includes all the elements known to date, arranged in increasing atomic number order and organized into periods (rows) and groups (columns) based on their chemical properties.

Salient features of the long form periodic table include:

1. Periods: The long form periodic table consists of several periods, each represented by a row. There are a total of seven periods. The period number indicates the energy level or shell occupied by the outermost electrons of the elements in that period.

2. Groups: The long form periodic table has numerous groups, also known as families or columns. The groups are numbered from 1 to 18. Elements within the same group have similar chemical properties due to their similar outer electron configurations.

3. Blocks: The long form periodic table is divided into blocks based on the types of orbitals being filled with electrons. These blocks are named s-block, p-block, d-block, and f-block.

4. Elements: The long form periodic table includes all the naturally occurring elements, as well as synthetic elements created in laboratories. It provides a comprehensive overview of all known elements, including their atomic number, symbol, atomic mass, and electronic configuration.

5. Lanthanides and Actinides: The f-block of the periodic table represents the inner transition metals known as lanthanides (in period 6) and actinides (in period 7). These elements are placed separately at the bottom of the periodic table to maintain its compact form.

6. Periodic Trends: The long form periodic table allows for a better understanding of periodic trends such as atomic radius, ionization energy, electron affinity, and electronegativity. These trends provide insights into the chemical behavior and reactivity of the elements.

7. Predictive Power: The periodic table's long form enables scientists to predict the properties of undiscovered elements and understand their placement within the table based on their expected electronic configurations.

8. Chemical Bonding and Reactions: The long form periodic table assists in understanding chemical bonding patterns, as elements with similar properties tend to form similar types of bonds. It also aids in predicting the reactions and chemical behavior of different elements and compounds.

Overall, the long form periodic table serves as a comprehensive and organized framework for studying the properties, trends, and relationships among elements, facilitating research, education, and advancements in the field of chemistry.

Answer:

B Genetic diversity

Explanation:

Answer:

I think the answer is b.

Explanation:

:)

Answer:

\(\boxed {\tt 0.1875 \ g/cm^3}\)

Explanation:

Density can be found by dividing the mass by the volume and using the following formula.

\(d=\frac{m}{v}\)

The mass of the cork is 30 grams.

The volume of the cork is 160 cubic centimeters.

\(m= 30 \ g\)

\(v= 160 \ cm^3\)

Substitute the values into the formula.

\(d=\frac{30 \ g}{160 \ cm^3}\)

Divide.

\(d=0.1875 \ g/cm^3\)

The density of the cork is 0.1875 grams per cubic centimeter or 0.1875 g/cm³

The given statement "at low temperatures, intermolecular forces become important and pressure of the gas will be higher than predicted by ideal gas law" is false. Because, at low temperatures, intermolecular forces become more significant and cause gas molecules to come closer together, which reduces the volume of the gas.

As a result, the pressure of the gas will be lower than predicted by the ideal gas law, which assumes that gas molecules have no volume and do not interact with each other.

The ideal gas law is only accurate for gases that behave like ideal gases, meaning that they have negligible intermolecular forces and occupy no volume. Real gases, on the other hand, deviate from the ideal gas law at high pressures and low temperatures, where intermolecular forces become more significant.

At these conditions, the volume of the gas becomes significant compared to the volume of the container, and the gas behaves less ideally. In this case, we need to use more complex equations of state to accurately predict the behavior of the gas.

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In the given nuclear reaction, 92235U + 01n → 52137Te + 4097Zr + 201n, the two neutrons produced at the end can potentially participate in various nuclear processes. Here are a few possibilities:

Neutron capture: The two neutrons can be captured by other atomic nuclei, leading to the formation of new isotopes. For example, they can be captured by stable isotopes to create neutron-rich isotopes or by radioactive isotopes to induce further nuclear reactions.

Neutron scattering: Neutrons can undergo scattering interactions with atomic nuclei, resulting in changes in their direction and energy. This scattering process is commonly utilized in neutron scattering experiments to study the structure and properties of materials.

Neutron-induced fission: If the incident neutrons have sufficient energy, they can induce fission in certain heavy isotopes, such as uranium or plutonium. This leads to the splitting of the nucleus into two or more fragments along with the release of additional neutrons and a significant amount of energy.

Neutron activation: Neutrons can induce nuclear reactions in target materials, resulting in the activation of atomic nuclei and the production of radioactive isotopes. This process is commonly used in neutron activation analysis to determine the composition of various materials.

These are just a few examples of what the two neutrons can do in the given nuclear reaction. The specific outcomes will depend on the energy of the neutrons, the target materials involved, and the conditions of the system.

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The Statement "All colors are transmitted through the drink except for blue which is absorbed by the drink." is correct on what happens to a light as it passes through a blue drink.

Light is a form of electromagnetic radiation that is visible to the human eye. It is a type of energy that travels through space in the form of waves and does not require a medium to propagate. Light is produced by the movement of charged particles and travels at a constant speed of about 299,792,458 meters per second in a vacuum.

When light passes through a blue drink, the liquid absorbs the blue portion of the spectrum and allows the other colors to pass through. This is because the blue pigment in the drink selectively absorbs the blue portion of the spectrum, which is why we perceive the liquid as blue. The other colors in the visible spectrum are transmitted through the drink and are not affected.

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The cathodic protection of Cu(s) can be provided if it is connected galvanically to Zn.

The metal with the more reduction potential will act as the anode and undergo oxidation, while the metal with the more positive standard reduction potential will act as the cathode and undergo reduction.

As Cu has a greater reduction potential than Zn, it has a greater capacity to reduce than that of Zn. So by galvanically connecting to zn, we can say that the cathodic protection of Cu can be obtained.

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Answer:

hot

Explanation:

Answer:

it does not matter

Explanation:

g

Answer:

It doesn't matter

Explanation:

In almost all cases, chemical bonds are formed by interactions of valence electrons in atoms. To facilitate our understanding of how valence electrons interact, a simple way of representing those valence electrons would be useful. Again, it does not matter on which sides of the symbol the electron dots are positioned.