Does Anyone Need Answer To Your Question

Using the drop-down menus, complete the table to summarize the properties of the different subatomic particles.

A. ✔ 1 .


B. ✔ 1 .


C. ✔ 0 .

Fossil fuels form in sedimentary rocks when organic material is exposed to high temperatures and pressure over long periods of time.
This process is known as thermal alteration.

Fossil fuels are made from decomposing plants and animals. These fuels are found in the Earth's crust and contain carbon and hydrogen, which can be burned for energy. Coal, oil, and natural gas are examples of fossil fuelsA fossil fuel is a hydrocarbon-containing material formed naturally in the Earth's crust from the remains of dead plants and animals that is extracted and burned as a fuel. The main fossil fuels are coal, oil, and natural gas.

For such more questions on Fossil fuels:

https://brainly.com/question/79954

#SPJ11

The density of the substance having a mass of 2.0 g is 0.4 g/mL (Option D)

First, we shall obtain the volume of the substance. This can be obtained as follow:

Volume of substance = (Volume of water + substance) - (Volume of water)

Volume of substance = 75 - 70

Volume of substance = 5 mL

Finally, we shall determine the density of the substance. This is illustrated below:

Density = mass / volume

Density of substance = 2 / 5

Density of substance = 0.4 g/mL

Thus, the density is 0.4 g/mL (Option D)

Learn more about density:

https://brainly.com/question/952755

#SPJ1

Answer:

9.523

Explanation:

because the equation for speed is distance divided by time! hope that helps

A single replacement reaction, also known as a single displacement reaction, occurs when one element in a molecule is swapped out for another.

When one element replaces another in a compound, it is known as a single replacement reaction. A + BC → B + AC is a good representation of this kind of reaction. When two ionic compounds exchange ions and create two new ionic compounds, this is known as a double replacement reaction.

Replacement is the reaction that occurs when one element swaps places with another in a compound or when two components in two separate compounds switch places.

Learn more about replacement reaction here:

https://brainly.com/question/15995721

#SPJ4

A major source of iodide in the North American diet is iodized salt. Iodized salt is regular table salt that has been fortified with iodine. The addition of iodine to salt was implemented as a public health measure to prevent iodine deficiency, which can lead to thyroid problems and other health issues.

Iodine is an essential nutrient required for the production of thyroid hormones. Since the body cannot produce iodine on its own, it must be obtained from the diet. In regions where iodine deficiency is prevalent, such as some areas of North America, iodized salt is commonly used to ensure an adequate intake of iodine.

By consuming iodized salt in cooking and food preparation, individuals can easily incorporate iodine into their diet. The iodine content in iodized salt is carefully regulated to provide a consistent and reliable source of iodine for the population.

Other dietary sources of iodine include seafood, seaweed, dairy products, and some fruits and vegetables; however, iodized salt remains one of the primary sources of iodine in the North American diet due to its widespread use and availability.

To know more about iodized salt

brainly.com/question/14385116

#SPJ11

Answer:

Option C, developmental view point

Explanation:

A person with preservationist viewpoint will think of only preserving the natural resources and the environment. While a person with a conservationist viewpoint will think of conserving the landscape, architecture, heritage, culture, buildings, rituals, etc.  

However, a person with developmental viewpoint will think of developing resources at ease. He/She will prioritize development and comfort of customer above all.  

Hence, option C is correct

The new frequency (f1) can be calculated using f1 = (λ0/2λ1)f0, where λ1 represents the new wavelength in the new medium.

When a sound wave with wavelength λ0 and frequency f0 moves into a new medium where the speed of sound is v1 = 2v0, the wavelength and frequency of the wave will change. The new wavelength (λ1) and frequency (f1) can be determined using the relationship between wave speed, wavelength, and frequency.

The wave speed (v) is defined as the product of wavelength (λ) and frequency (f): v = λf.

Since the speed of sound in the new medium is v1 = 2v0, we can write the equation as: v1 = λ1f1.

Comparing this equation with the previous one, we find that λ1f1 = λ0f0.

Given that v1 = 2v0, we can substitute it into the equation: (2v0)(f1) = λ0f0.

From this equation, we can determine the relationship between the new frequency (f1) and the original frequency (f0): f1 = (λ0/2λ1)f0.

Therefore, when a sound wave with wavelength λ0 and frequency f0 moves into a new medium where the speed of sound is v1 = 2v0, the new frequency (f1) is given by f1 = (λ0/2λ1)f0, while the wavelength (λ1) will change accordingly.

Know more about Sound Wave here:

https://brainly.com/question/31851162

#SPJ11

The student expected to get approximately 2.912 grams of \(Fe_{2}S_{3}\).

To calculate the expected amount of \(Fe_{2}S_{3}\), we need to use the percent yield and the actual amount collected by the student.

Given:

Actual amount of \(Fe_{2}S_{3}\) collected = 10.40 grams

Percent yield = 28.0%

Let's denote the expected amount of \(Fe_{2}S_{3}\) as x grams.

Percent yield is calculated as follows:

Percent yield = (Actual yield / Theoretical yield) * 100

Rearranging the equation, we can solve for the theoretical yield:

Theoretical yield = (Percent yield / 100) * Actual yield

Substituting the given values:

Theoretical yield = (28.0 / 100) * 10.40

                 = 0.28 * 10.40

                 = 2.912 grams

Therefore, the student expected to get approximately 2.912 grams of \(Fe_{2}S_{3}\).

Learn more about Percent yield, here:

https://brainly.com/question/17042787

#SPJ4

Answer:

Explanation:

To find [H+] in the solution we must first find the pH

That's

pH = - log[H+]

pH + pOH = 14

pOH = 0.253

pH = 14 - 0.253

pH = 13.747

Since we've found the pH we can now find the [H+] in the solution

We have

pH = - log[H+]

13.747 = - log[H+]

Take antilog of both sides

We have the final answer as

\([H+] = 1.79 \times {10}^{ - 14} M\)

Hope this helps you

Answer:

Okay so we know that pOH + pH = 14, so if pOH is 0.253 the pH would be 13.747.  

And pH = -log [H+], so [H+] = 10^(-pH) -->This is just the antillog...  

so [H+] = 1.791e-14, which would make sense for the strongly basic solution (so B is the correct answer)  

Hope this helps...

Enabling auto-tagging allows for automatic tagging of certain attributes or information within a system or program.

This can save time and effort by eliminating the need for manual tagging and ensuring accuracy in the tagging process. Enabling auto-tagging is a process that allows an analytics or advertising platform to automatically assign tags to specific elements in a campaign or website. This helps in tracking and organizing data more efficiently, making it easier to analyze and optimize your online presence. When auto-tagging is enabled, the system will automatically generate and add tags to your URLs or content without the need for manual input, saving time and effort.

To learn more about website click here https://brainly.com/question/19459381

#SPJ11

we are given the pH of the solution as 3.17 are we are required to find the [H₃O+]

we know that :

pH = - log[H₃O+]

-pH = log[H₃O+]

10⁻ᵖᴴ = 10ˡᵒᵍ[ᴴ₃ᴼ⁺]

10⁻ᵖᴴ = [H₃O+]

therefore:

10⁻³.¹⁷ = [H₃O+]

6.8x10⁻⁴ M = [H₃O+]

therefore the [H₃O+] is 6.8x10 minus 4 Molar

On the periodic table, argon has an average atomic weight of 39.948 amu. This number is really near 40. This suggests that Ar-40 is the isotope of argon (Ar) that is most prevalent in the natural world.

If all three argon atoms are neutral, they would each contain 18 protons and 18 electrons. In comparison to one another, the three isotopes will each have a distinct number of neutrons (18, 20, and 22 neutrons respectively).

Atomic number, not atomic mass, is used to categorise the elements. As the atomic number of argon (18) is less than that of potassium (19)

To know more about periodic table visit:-

brainly.com/question/11155928

#SPJ1

Taking into account the change of units, the correct answer is the last option: 1.429 atm is equal to 1.086×10³ mmHg.

The rule of three is a way of solving problems of proportionality between three known values and an unknown value, establishing a relationship of proportionality between all of them.

That is, what is intended with it is to find the fourth term of a proportion knowing the other three.  

If the relationship between the magnitudes is direct, the direct rule of three must be applied as follow, being a, b and c known data and x the variable to be calculated:

a ⇒ b

c ⇒ x

So: x= (c×b)÷a

The direct rule of three is the rule applied in this case where there is a change of units.

To perform in this case the conversion of units, you must first know that 1 atm = 760 mmHg.

So, you can applied the following rule of three: if 1 atm is equal to 760 mmHg, 1.429 atm is equal to how many mmHg?

1 atm ⇒ 760 mmHg

1.429 atm⇒ x

So:

x= (1.429 atm×760 mmHg)÷ 1 atm

Solving:

x= 1086 mmHg= 1.086×10³ mmHg

In summary, 1.429 atm is equal to 1.086×10³ mmHg.

Learn more about change of units:

brainly.com/question/9587688

brainly.com/question/22056892

#SPJ1

In the Lewis structure of acetic acid, there are 7 sigma bonds and 1 pi bond. Sigma bonds are the strongest covalent bond while pi bonds are covalent bonds where orbitals overlap laterally.

Lewis structures are also called as electron dot structures and can be drawn if the molecular formula of a compound is known. It provides information regarding the nature of bond and the position of atoms .

They are also capable of exhibiting the lone pair if any present in a molecule or compound.Lewis defined a base to be an electron pair donor and an acid to be an electron pair acceptor.

They are capable of reflecting electronic structure of elements and even the pairing of electrons . In the diagram, each dot represents an electron while a pair of dots represent a bond between the atoms.

Learn more about Lewis structures,here:

https://brainly.com/question/12476602

#SPJ1

Answer:

a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.

Explanation:

simpler definition: It's just a thing that you're willing to define before your experiment begins. You're predicting what'll happen, or what you'll earn through your experiment.

Let's say that you're doing an experiment based on using fertilizer on your plant. Your hypothesis can end up like this, "If I add fertilizer to my garden, then my plants will grow faster."

Please correct me if I'm wrong.

1. LiCl (Lithium chloride) CsBr (Cesium bromide) NaCl (Sodium chloride).

3. Group 1 elements, also known as alkali metals, form 1+ ions because they have one valence electron in their outermost energy level.

4. The formula of the sulfide ion is S2-.

5. The ions in NaCl stay together due to electrostatic attraction between the oppositely charged ions.

6. The formula of potassium sulfide is K2S. In this compound, potassium (K+) forms a 1+ ion, and sulfide (S2-) forms a 2- ion.

1. The three ionic compounds from the given list are:

LiCl (Lithium chloride)

CsBr (Cesium bromide)

NaCl (Sodium chloride)

Dot-and-cross diagrams for the three ionic compounds:

2. LiCl:

Li (Lithium) has 1 valence electron while Cl (Chlorine) has 7 valence electrons. The electron from Li is transferred to Cl, resulting in the formation of Li+ and Cl- ions. The dot-and-cross diagram would show Li with no dots and Cl with 8 dots around it.

CsBr:

Cs (Cesium) has 1 valence electron while Br (Bromine) has 7 valence electrons. Similar to LiCl, the electron from Cs is transferred to Br, resulting in Cs+ and Br- ions. The dot-and-cross diagram would show Cs with no dots and Br with 8 dots around it.

3. NaCl:

Na (Sodium) has 1 valence electron while Cl (Chlorine) has 7 valence electrons. Again, the electron from Na is transferred to Cl, forming Na+ and Cl- ions. The dot-and-cross diagram would show Na with no dots and Cl with 8 dots around it.

4. Group 1 elements, also known as alkali metals, form 1+ ions because they have one valence electron in their outermost energy level. These elements have a strong tendency to lose this valence electron to achieve a stable electron configuration similar to the noble gas configuration.

The formula of the sulfide ion is S2-.

5. The ions in NaCl stay together due to electrostatic attraction between the oppositely charged ions. In NaCl, the sodium (Na+) ion has a positive charge, and the chlorine (Cl-) ion has a negative charge. These opposite charges attract each other, forming an ionic bond.

The strong electrostatic attraction between Na+ and Cl- keeps the ions together in a crystal lattice structure.

6. The formula of potassium sulfide is K2S. In this compound, potassium (K+) forms a 1+ ion, and sulfide (S2-) forms a 2- ion. To balance the charges, two potassium ions are required for every sulfide ion.

For more such questions on alkali metals, visit:

brainly.com/question/30391109

#SPJ8

Answer:

false

Explanation:

trust

Answer:

True

Explanation:

Because they require different things and have different functions

The Molar solubility and the solubility of each salt at 25°C are: (a) PbF₂ : 4.41 x 10⁻⁵  g/L ; (b) Ag₂CO₃: 0.0398 g/L ; (c) Bi₂S₃ : 1.65 x 10⁻¹³ g/L

Let us consider X be the molar solubility of PbF₂.

Then, [Pb2+] = X and [F-] = 2X. Substituting into the Ksp expression and solving for x:

4.0 x 10⁻⁸ = X×(2X)²

X = 1.8 x 10⁻⁷ M

To convert to g/L, we need to multiply by the molar mass of PbF₂ (245.2 g/mol):

solubility = 1.8 x 10⁻⁷ × 245.2 = 4.41 x 10⁻⁵ g/L

(b) Ag₂CO₃ Ksp = [Ag⁺]²[CO₃²⁻]

Let x be the molar solubility of Ag₂CO₃. Then, [Ag+] = 2x and [CO₃²⁻] = x. Substituting into the Ksp expression and solving for x:

8.1 x 10⁻¹² = (2x)² × x

x = 1.2 x 10⁻⁴ M

To convert to g/L,

we will multiply by the molar mass of Ag₂CO₃ (331.8 g/mol):

Therefore, solubility = 1.2 x 10⁻⁴ × 331.8 = 0.0398 g/L

(c) Bi₂S₃ Ksp = [Bi³⁺]²[S²⁻]³

Let x be the molar solubility of Bi₂S₃. Then, [Bi³⁺] = 2x and [S²⁻] = 3x. Substituting into the Ksp expression and solving for x:

1.6 x 10⁻⁷² = (2x)²×(3x)³

x = 3.2 x 10⁻¹⁶

To convert to g/L, we need to multiply by the molar mass of Bi₂S₃ (514.2 g/mol):

solubility = 3.2 x 10⁻¹⁶ × 514.2 = 1.65 x 10⁻¹³ g/L

To know more about solubility here

https://brainly.com/question/13043345

#SPJ4

The first, second, and third ionization energies represent the energy required to remove the first, second, and third electrons, respectively.

The ionization energy refers to the amount of energy required to remove an electron from an atom or ion in the gaseous state.

Let's delve into each of these terms:

First Ionization Energy:

The first ionization energy is the energy needed to remove the outermost (valence) electron from a neutral atom. It measures the atom's tendency to lose an electron and form a positive ion (cation). The first ionization energy is generally lower for metals than non-metals, as metals have fewer valence electrons and a weaker hold on them. The first ionization energy tends to increase across a period in the periodic table due to the increasing nuclear charge and decreasing atomic radius. It decreases down a group due to the increased shielding effect of inner electrons.

Second Ionization Energy:

The second ionization energy is the energy required to remove the second electron from a singly-ionized atom, converting it from a 1+ ion to a 2+ ion. The second ionization energy is always greater than the first ionization energy since it involves removing an electron from a cation, which is smaller and has a stronger hold on its remaining electrons. As a result, it requires more energy to remove the second electron.

Third Ionization Energy:

The third ionization energy is the energy needed to remove the third electron from a doubly-ionized atom, converting it from a 2+ ion to a 3+ ion. Like the second ionization energy, the third ionization energy is greater than the second ionization energy since it involves removing an electron from a cation with an even higher positive charge. The trend continues, and each subsequent ionization energy generally increases because it becomes increasingly difficult to remove electrons from highly charged ions.

Overall, ionization energies provide insight into an atom's stability, reactivity, and ability to form ions. Elements with low ionization energies tend to readily lose electrons to form positive ions (cations) and display metallic properties, while elements with high ionization energies are less likely to lose electrons and tend to form negative ions (anions) or share electrons in covalent bonds.

Learn more about electrons at: brainly.com/question/12001116

#SPJ11

The molarity of a solution made by dissolving 51.6 grams of NaCl in enough water to make 650 ml of solution  is approximately 1.36 M

The molarity of a solution can be calculated using the formula:

Molarity (M) = (moles of solute) / (volume of solution in liters)

First, we need to convert the mass of NaCl (51.6 grams) to moles. To do this, we'll use the molar mass of NaCl, which is approximately 58.44 g/mol.

Moles of NaCl = (51.6 grams) / (58.44 g/mol) = 0.883 moles

Next, we'll convert the volume of the solution from milliliters (mL) to liters (L).

Volume of solution = 650 mL * (1 L / 1000 mL) = 0.65 L

Now, we can calculate the molarity of the solution using the formula.

Molarity (M) = (0.883 moles) / (0.65 L) = 1.36 M

Thus, the molarity of the solution made by dissolving 51.6 grams of NaCl in enough water to make 650 mL of solution is approximately 1.36 M (rounded to two decimal places).

Know more about  molarity here:

https://brainly.com/question/30404105

#SPJ11

Answer:

-  No Food/Drinks

- Always have good hygiene

- Don't work alone

etc... cause i cant think :(

Explanation:

Explanation:

There are several steps you can take to prevent accidents during laboratory activities:

Familiarize yourself with the laboratory: Before starting any activity, make sure you know the location of safety equipment such as fire extinguishers, safety showers, and eyewash stations. You should also know the location of exits and emergency procedures.

Wear appropriate clothing: Always wear appropriate clothing for laboratory activities. This includes closed-toe shoes, long pants, and a lab coat or apron. Avoid loose clothing, jewelry, and long hair that can get caught in equipment.

Follow safety guidelines: Read and follow all safety guidelines and protocols for the specific activity you are performing. This may include wearing gloves, safety goggles, and a respirator, as well as using fume hoods or other ventilation equipment.

Handle chemicals with care: Be cautious when handling chemicals, as they can be dangerous. Always use proper labels and storage techniques, and never mix chemicals unless you are instructed to do so.

Use equipment safely: Make sure you are properly trained to use any equipment you are working with. Always use equipment as instructed, and avoid taking shortcuts or improvising.

Keep your work area clean: Keep your work area clean and tidy to avoid spills, tripping hazards, and other accidents.

Report any accidents or near misses: If you or someone else is involved in an accident or near miss, report it immediately to your supervisor or safety officer. This will help prevent similar incidents from happening in the future.

The chemical symbol for the starting isotope is 36Kr. The starting isotope has a mass number of 81 and an atomic number of 35, giving us the symbol 36Kr.

We know that the ending isotope is bromine-81, which has a mass number of 81. We also know that it was formed through electron capture, which means a proton was converted into a neutron. This means the atomic number of the starting isotope was one less than that of bromine, or 35.

In electron capture, a radioactive element decays by capturing one of its inner electrons and converting a proton into a neutron. Since the decay product is bromine-81 (81Br), the starting isotope must have the same mass number (81) and one less atomic number. Bromine has an atomic number of 35, so the starting isotope has an atomic number of 34. The element with an atomic number of 34 is krypton (Kr).

To know more about mass visit:

https://brainly.com/question/11954533

#SPJ11

After solving the equation the volume of the gas in the container is 26.6L.

What is ideal gas law?

Pressure times volume are equal to moles times the universal gas constant times temperature, according to the ideal gas law formula.

PV=nRT

where P is for pressure

n = number of moles, where V = volume

T stands for temperature.

R is the gas constant

Energy units per temperature increase per mole are measured by the gas constant R. It is sometimes referred to as the molar gas constant, the ideal gas constant, and the universal gas constant.

Depending on the units you use in your computation, the gas constant R has a different value.

To convert degree celcious to kelvin, 55degree C+273= 328K

To convert pressure from mmHg to atm= 890/760=1.17atm

Number of moles of oxygen= 37.04/32=1.16mol

V= nRT/P

 =1.16*0.0821*328/1.17

 =26.6L

To learn more about ideal gas law
https://brainly.com/question/27870704

#SPJ4

The solution with the lowest concentration of hydrogen ions [H⁺] is  laundry detergent. (A)

The pH scale measures the concentration of hydrogen ions [H⁺] in a solution. The lower the pH, the higher the concentration of hydrogen ions [H⁺], and the more acidic the solution is.

The higher the pH, the lower the concentration of hydrogen ions [H⁺], and the more basic the solution is.

In this case, the solutions are ranked from lowest to highest pH: Vinegar, pH 3 Banana, pH 5 Toothpaste, pH 8 Laundry detergent, pH 10 Since laundry detergent has the highest pH, it has the lowest concentration of hydrogen ions [H⁺], making it the most basic solution. Therefore, the correct answer is a. laundry detergent.

To know more about pH scale click on below link:

https://brainly.com/question/10825137#

#SPJ11

The correct options are molar mass and stoichiometric factor according to stated question.

Number of moles of any substance are calculated using the formula-

Number of moles = mass/molar mass

As the stoichiometric factor represents the quantity of element being used or produced, the number of moles of both or all the elements are used to relate the values. The Avogadro's number holds significance when reaction concerns number of molecules or atoms.

Hence, the correct requirements needed to relate the mass of a reactant in a reaction to the number of moles of a product in the reaction are molar mass and stoichiometric factor.

Learn more about molar mass -

https://brainly.com/question/837939

#SPJ4

Answer:

by burning the mixture in an electrical furnace to a temp. 640 degree C. to melt both Zinc & Aluminum leaving copper oxide as a powder.

Explanation:

Answer:

Iodine has an atomic number of 53 meaning 53 electrons and it gain 1 electron when reacting with a metal. We know the element is a non metal as is gains an electron

Ion is fluoride (F⁻), gaining 1 electron for a stable electron structure like noble gas neon (Ne).

Fluorine (F) is an element with 9 electrons in its neutral state. By gaining 1 electron, it forms the fluoride ion (F⁻) with 10 electrons. This allows the ion to achieve a stable electron configuration, following the octet rule.

Fluoride ions are highly reactive due to their electron configuration and tend to form ionic compounds. They play essential roles in various chemical and biological processes, such as dental health, where fluoride compounds are added to prevent tooth decay.

Fluoride ions' stability and reactivity make them important in various industrial and scientific applications, including the production of fluorine-containing compounds used in refrigerants, plastics, and pharmaceuticals.

To learn more about noble gas neon  here

https://brainly.com/question/33607426

#SPJ2