what is the volume of 0.4 mole of gas at stp? 30 points!

The correct statements are that a rock is considered an ore when it contains at least one metallic mineral in sufficient amounts to be extracted profitably and when it contains fluorite or sulfur minerals in sufficient amounts to be extracted profitably.

When it contains at least one metallic mineral in sufficient amounts to be extracted profitably.

When it contains fluorite or sulfur minerals in sufficient amounts to be extracted profitably.

Step-by-step explanation:

When it occurs in sufficient amounts to be used to build roads and buildings: This statement is incorrect. Rocks that are used for construction purposes, such as limestone or sandstone, are not considered ores unless they also contain economically valuable minerals.

Only when it contains lead: This statement is incorrect. Ores are not limited to containing only lead. Ores can contain various metallic minerals, not just lead.

When it contains at least one metallic mineral in sufficient amounts to be extracted profitably: This statement is correct. Ores are rocks that contain valuable metallic minerals in concentrations that make extraction economically feasible. These minerals can include gold, silver, copper, aluminum, zinc, and many others.

Only when it contains iron: This statement is incorrect. While iron ores are commonly known and widely used, ores are not limited to containing only iron. There are numerous other metallic minerals that can be extracted profitably from rocks.

When it contains fluorite or sulfur minerals in sufficient amounts to be extracted profitably: This statement is correct. Fluorite and sulfur are examples of non-metallic minerals that can be extracted profitably from rocks, and if a rock contains these minerals in sufficient quantities, it can be considered an ore.

learn more about from  metallic mineral the given link:

https://brainly.com/question/89259

#SPJ11

Answer:

0.1 moles of electrons

Explanation:

Electroplating is a process in which a metal is used to cover the surface of another metal for protection or beautification purposes.

The reduction of the silver is captured in the equation;

Ag^+(aq) +e ------> Ag(s)

We were already told in the question that the mass of silver is 108g

1 mole of electrons is needed to deposit 108g of silver

x moles of electrons is required to deposit 10.8 g of silver

x= 1 ×10.8/108

x= 0.1 moles of electrons

The number of electrons, protons, and neutrons in argon is 18, 18 , and 22 respectively, the number of electrons , protons and neutrons in sulphur-32 is 16, 16, 16 respectively. The number of protons, neutrons, and electrons are 6 , 8 and 6. And for uranium-238 , 92 protons , 92 electrons and 146 neutrons.

To know more about electrons visit:

https://brainly.com/question/1255220

#SPJ13

Answer:

This took forever T-T

Explanation:

1. The condition of the soil has a big impact on the environment. Good soil helps plants grow, supports different kinds of life, and prevents erosion. It also keeps nutrients in balance and affects the quality of water and air. If the soil is unhealthy or polluted, it can harm plants, animals, and the overall ecosystem.

2. The dodo bird is an example of a species that no longer exists. It used to live on an island called Mauritius. Sadly, people hunted the dodo bird for food and destroyed its habitat. They also introduced other animals that harmed the dodo bird's population. Because of these reasons, the dodo bird became extinct. This affected the environment because the dodo bird played a role in spreading seeds and helping plants grow.

3. The Sumatran orangutan is a species in danger of disappearing. Its biggest threats are losing its home due to forests being cut down for palm oil, illegal hunting, and being taken as pets. People are working to protect the orangutans by preserving their habitat, rescuing and rehabilitating them, and educating communities about their importance.

4. Central Park in New York City is a natural area created in 1857. It was made for people to enjoy nature in the middle of the city. People can do many outdoor activities there like walking, picnicking, and playing sports. The park is also home to various birds and animals, which adds to the city's biodiversity.

5. When a certain environment, like a forest or a desert, is damaged or in danger, it has a big impact on the whole ecosystem. Many different plants and animals depend on each other in these environments. If something harms or destroys their homes, it can lead to the loss of species, disruption of food chains, and less diversity. It can also affect important processes like water and carbon cycles, and even influence the climate. People who rely on these environments for resources and livelihoods are also affected. That's why it's important to protect and take care of these natural areas.

Answer: Protons and Electrons

Explanation:

Atoms are made up of 3 subatomic particles.

Protons (Positive Charge)

Electrons (Negative Charge)

Neutrons (Neutral Charge)

The number of protons must be equal to that of electrons in order for the overall charge to be neutral.

Citrulline has structural similarity to arginine among the 20 amino acids that make up proteins.

Citrulline, an amino acid, has structural similarity to arginine among the 20 amino acids that make up proteins. Citrulline and arginine share similar chemical structures and contain a guanidino group. Citrulline is a non-standard amino acid, meaning it is not directly encoded by the genetic code and is typically produced in the urea cycle in the body. Structurally, citrulline differs from arginine by the absence of a terminal guanidino group, as it has been deaminated.

However, citrulline can be converted back to arginine through enzymatic reactions. Functionally, citrulline plays a role in the urea cycle and is involved in the synthesis of nitric oxide. Arginine, on the other hand, is essential for protein synthesis and is a precursor for the production of various molecules, including nitric oxide, creatine, and polyamines. Despite their structural similarity, citrulline and arginine have distinct roles and functions in biological systems.

Know more about Amino Acids here:

https://brainly.com/question/31872499

#S{J11

The density of the unknown substance in ng/µm³ is 0.000983 ng/µm³.

Density refers to the amount of mass contained in a given volume of a substance. It is a physical property of matter that describes how closely packed the particles are in a substance. Mathematically, density is calculated by dividing the mass of an object by its volume, and is expressed in units of mass per unit volume (such as grams per cubic centimeter, or kilograms per liter).

To convert the density from g/cm³ to ng/µm³, we need to use the following conversion factors:

1 g = 1,000,000,000 ng (or 1 x 10⁹ ng)
1 cm³ = 1,000,000,000,000 µm3 (or 1 x 10¹² µm³)

So, we can multiply the density by these conversion factors to get the density in ng/µm³:

0.983 g/cm³ x (1 x 10⁹ ng / 1 g) x (1 cm³ / 1 x 10¹² µm³) = 0.000983 ng/µm³

Therefore, the density of the unknown substance in ng/µm³ is 0.000983 ng/µm³.

Learn more about Density here: https://brainly.com/question/6838128.

#SPJ11

According to the bohr model of the atom, the single electron of a hydrogen atom circles the nucleus is specific allowed orbits.

To learn more about Gravitational refer to:

https://brainly.com/question/27943482

#SPJ4

The type of electromagnetic radiation that travels through space the fastest is γ (gamma) rays.

Electromagnetic radiation consists of a spectrum of different wavelengths and frequencies, ranging from radio waves to gamma rays. The speed of electromagnetic radiation in a vacuum, such as space, is constant and is denoted by the symbol "c," which represents the speed of light.

All forms of electromagnetic radiation, including gamma rays, travel at the same speed in a vacuum, which is approximately 3.00 x 10⁸ meters per second (m/s) or 299,792,458 meters per second (m/s). This speed is often rounded to 3.00 x 10⁸ m/s for convenience.

Therefore, gamma rays, being a form of high-energy electromagnetic radiation, travel through space at the same speed as other types of electromagnetic radiation, including visible light, ultraviolet (UV) rays, X-rays, microwaves, and radio waves. They all propagate through a vacuum with the speed of light, making them the fastest form of electromagnetic radiation in space.

learn more about electromagnetic radiation here:

https://brainly.com/question/10759891

#SPJ4

the complete question is:

Among the different types of electromagnetic radiation, which one is known to travel through space the fastest?

The equation for the combustion reaction of ethylene (C2H4) with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O) is:

C2H4 + 3O2 -> 2CO2 + 2H2O

The balanced equation represents the stoichiometry of the combustion reaction. Here is the interpretation of the equation:

Molecular Interpretation:

1 molecule of ethylene reacts with 3 molecules of oxygen to produce 2 molecules of carbon dioxide and 2 molecules of water.

Molar Interpretation:

1 mole of ethylene reacts with 3 moles of oxygen to produce 2 moles of carbon dioxide and 2 moles of water.

Mass Interpretation:

The molar masses of the compounds involved are:

C2H4: 2(12.01 g/mol) + 4(1.01 g/mol) = 28.05 g/mol

O2: 2(16.00 g/mol) = 32.00 g/mol

CO2: 1(12.01 g/mol) + 2(16.00 g/mol) = 44.01 g/mol

H2O: 2(1.01 g/mol) + 16.00 g/mol = 18.02 g/mol

Therefore, when 28.05 grams of ethylene react with 96.00 grams of oxygen, they produce 88.02 grams of carbon dioxide and 36.04 grams of water.

The balanced equation C2H4 + 3O2 -> 2CO2 + 2H2O represents the combustion of ethylene with oxygen, resulting in the formation of carbon dioxide and water. The equation can be interpreted on a molecular, molar, and mass basis to understand the stoichiometry and quantities involved in the reaction. This information is useful for calculating reactant and product amounts, as well as for understanding the composition and yields of the combustion products.

To know more about ethylene visit:

https://brainly.com/question/14797464

#SPJ11

Based on the given description, the student is most likely describing a liquid.

As we know, liquids do not have any definite shape, but they do have a definite volume. This is because the particles of matter in a liquid are close together, but they are still able to flow past each other. Due to this property, liquid take the shape of its container.

Some examples of liquids include water, oil, and gasoline.

Other states of matter include solids and gases.

Solids have a definite shape and volume, and the particles of matter in a solid are not able to flow past each other.

Gases have no definite shape or volume, and the particles of matter in a gas are very far apart and are able to move freely.

Thus, the correct answer is liquids.

To learn more about liquids :

https://brainly.com/question/752663

#SPJ11

If the bromobenzene is added too quickly, biphenyl is formed as the side product with the Grignard reagent.

What is Grignard reagent?

Grignard reagent is an organomagnesium halide which has the formula RMgX where R is alkyl or aryl group, Mg is magnesium, X is an halide.

When bromobenzene is added too quickly to the Grignard reagent, biphenyl is formed as a by-product. the formation of the side product is enhanced by high temperature. So, this reaction is carried out in low temperature.

Therefore, biphenyl is formed as side product when bromobenzene is added quickly to the Grignard reagent. The structure of biphenyl is two benzene rings joined together.

To learn more about the Grignard reagents click on the given link https://brainly.com/question/23971610

#SPJ4

Similarities in nucleotide and amino acid sequences is that, the polypeptide that was initially transcribed by the gene follows the linear nucleotide sequence of the mRNA.

Sequence similarities in biological components, such as those in nucleotide and amino acid composition, can reveal details about the evolutionary relationships of organisms. Nucleotide sequence similarity can be used to create evolutionary trees and suggests a shared ancestry of the organisms. Comparable amino acid sequences between two proteins can suggest that their structures or activities are similar.

A gene's nucleotide sequence is converted into an mRNA, which is subsequently transcriptionally processed to create a string of amino acids. Each amino acid in a protein is determined via translation from the nucleotide sequence of a gene, which is read in sets of three nucleotides. In order to translate a gene's nucleotide sequence into mRNA, it must first be translated into groups of three nucleotides that designate each amino acid. A gene's nucleotides each designate a certain protein amino acid.

Learn more about amino acid sequence here :

brainly.com/question/29550842

#SPJ4

Answer:

X5Y2

Explanation:

% composition of X = 52.2%

% composition of Y = (100 - 52.2) = 47.8%

This means that there are 52.2g of X and 47.8g of Y in the compound

To calculate the empirical formula of the compound, we first convert the gram value to mole value by dividing by their molar masses.

X = 52.2g/42.3g/mol = 1.234mol

Y = 47.8g/96.7g/mol = 0.494mol

Next, we divide each mole value by the smallest value (0.494mol)

X = 1.234mol ÷ 0.494mol = 2.49

Y = 0.494mol ÷ 0.494mol = 1

We multiply each value by 2

X = 2.49 × 2 = 4.98

Y = 1 × 2 = 2

The simple ratio of X:Y is 5:2, hence, their empirical formula is X5Y2.

Answer:differentiate between two compounds i think!

Explanation: taking a test!

Answer:(1) differentiate between two compounds

Explanation:

A Chemical property tells us the  characteristics of a particular matter or substance after a  chemical change. This property helps us to differentiate a compound from another or differentiate   elements or substances. Examples of a Chemical property are  acidity, reactivity and heat, etc .

For example to differentiate between Water H2O and  Hydrogen peroxide, H202

Even though they are made up of  oxygen and hydrogen. Hydrogen peroxide  (H2O2), has  more(1) oxygen than water (H2O).

Using Acidity as a chemical property to differentiate these substances

Water, H20  is amphoteric in nature ie having both acidic and basic properties, while H202 is a weak acid.

See related question here: https://brainly.com/question/19594290

The mass percent of the sucrose solution is 46% which is made by mixing 8.37 grams of sucrose into water until the solution has a mass of 17.9 grams.

Given, Mass of sucrose = 8.37 g

Mass of solution = 17.9 g

We can calculate the mass of water as follows:

Mass of water = Mass of the solution - Mass of sucrose= 17.9 g - 8.37 g= 9.53 g

We can then use the formula for mass percent to calculate the answer:

Mass percent = (Mass of solute / Mass of solution) × 100%

Substitute the values of the mass of sucrose and mass of solution in the above formula,

Mass percent = (8.37 / 17.9) × 100%= 46.81%

Therefore, the mass percent of the sucrose solution is 46%.

To know more about mass percent, refer here:

https://brainly.com/question/5394922#

#SPJ11

Answer:

They are single celled organisms and they are microscopic

Explanation:

The chemical formula for this compound is N₅ Cl₁₀ P₅

First, find out how many grams of each element are in 1 mole of the compound. We can do this because we have the molar mass of the compound and the mass percent of each element.

Now that we know the number of grams of each element per mole of the compound, we can use the molar mass of each element to find the number of moles of each element per mole of the compound.

Therefore, the chemical formula for this compound is N₅ Cl₁₀ P₅

We can double-check by making sure that the compound with this formula has the same molar mass as the one given in the problem

(5*14) + (35,45*10) + (31*5) = 70+354,5+155 = 579,5

Learn more about the chemical formula of a compound here https://brainly.com/question/26388921

#SPJ4

One edta species can bind to multiple sites on a transition metal at the same time. The edta (ethylene diamine tetraacetic acid) molecule has four acidic groups that can coordinate with transition metal ions.

This allows for multiple binding sites on the metal ion to be occupied by the edta molecule simultaneously. In fact, edta is often used as a chelating agent to remove metal ions from solutions, as it can tightly bind to and sequester multiple metal ions at once.

EDTA, or ethylenediaminetetraacetic acid, is a chelating agent that can form complex structures with metal ions. The molecule has six potential binding sites: two nitrogen atoms from the amine groups and four oxygen atoms from the carboxylate groups. These six sites allow EDTA to form a stable, octahedral complex with a single transition metal ion, effectively binding the metal at all six sites at the same time.

To know more about metal ions visit:

https://brainly.com/question/16954578

#SPJ11

Lipids are more of a fatty, oily, and waxy substance that serve as long-term energy for whenever the body may need it. You can find lipids in oily foods such as salad dressing, olives, avocados, peanut butter, nuts, seeds, and some fish.

Proteins are enzymes that are used to strengthen and keep the body functioning. Proteins make up our bones, hair, skin, nails, and muscle, and without them our bodies wouldn't be strong enough to function or carry out even the simplest of tasks. Proteins are found in more animal-based foods such as meat, vegetables, grains, and seeds.

Carbohydrates are more of the sugary molecules that provide short-term or immediate energy for the body. They can be found in foods like bread, beans, milk, popcorn, potatoes, cookies, spaghetti, and soft drinks.

Answer:

the ans is in the picture with the steps  

(hope it helps can i plz have brainlist :D hehe)

Explanation:

The concept Boyles law is used here to determine the final pressure of the gas. Boyle's law was put forward by the Anglo-Irish chemist Robert Boyle in the year 1662. The final pressure of the gas is  7.66 atm.

At constant temperature, the volume of a given mass of gas is inversely proportional to its pressure. It can also be explained as at constant temperature, the product of pressure and volume of a given mass of gas is constant.

A straight line graph is obtained when pressure is plotted against the inverse of the volume.

Mathematically the law can be expressed as:

V∝ 1/P

PV = k (Constant)

Here 'V' is the volume and 'P' is the pressure of the gas.

For two different gases, the equation is given as:

P₁V₁ = P₂V₂

P₂ = P₁V₁ / V₂

1 torr = 0.00131 atm

P₁ = 0.023 atm

0.023 × 50.00  / 0.1500 = 7.66 atm

Thus the final pressure is 7.66 atm.

To know more about Boyles law, visit;

https://brainly.com/question/30367133

#SPJ2

Electron is negatively charged particle. When building electric circuits electron flow along the path. so, option C is correct.

Electrons are fundamental to many physical processes, including gravity, electromagnetic interactions, weak interactions, electricity, magnetism, chemistry, and thermal conductivity.

The outer shells of atoms in the common items you encounter are made up of matter particles called electrons.

A negatively charged subatomic particle known as an electron can either be free or attached to an atom (not bound). One of the three main types of particles within an atom is an electron that is bonded to it.

The other two are protons and neutrons. The nucleus of an atom is made up of electrons, protons, and neutrons together.

Thus, Option C is correct.

To learn more about electron follow the link below;

https://brainly.com/question/1255220

#SPJ6

Answer:

electons are added moving to the right

Explanation:

The decrease in atomic radius with increasing atomic number is best explained by the number of protons increasing and the number of shells of electrons remaining the same. Therefore, option (A) is correct.

The atomic radius of an atom can be described as the size of the atom, which is generally the mean distance from the center of the nucleus to the outermost electron of an atom.

In the periodic table,  as you move from left to right, the atomic number of elements in period 2 will continue to increase, because there is an increase in the number of protons which causes an increase in positive charge carried by each element while the number of shells of the electrons remains constant.

Therefore the Elements will attract more negative charges to themselves as we move from left to right in the period. As the atomic number of elements increases, there will be a decrease in the atomic radius of the elements.

Hence, the decrease in atomic radius with increasing atomic number is explained by the number of protons increasing and the number of shells of electrons in an atom remaining the same.

Learn more about atomic radius, here:

brainly.com/question/18095927

#SPJ6

Your question is incomplete most probably the complete question was,

As the elements in Period 2 of the Periodic Table are considered in succession from left to right, there is a decrease in atomic radius with increasing atomic number. This may best be explained by the fact that the

a. number of protons increases, and the number of shells of electrons remains the same

b. number of protons increases, and the number of shells of electrons increases

c. number of protons decreases, and the number of shells of electrons remains the same

d. number of protons decreases, and the number of shells of electrons increases

Uranium -236 (U-236) and the protons that are contained in the products are; krypton-36 and barium-56.

The term fission refers to the process in which the nucleus of a larger element is bombarded with a small particle such as a neutron which causes the  nucleus to become split. As the nucleus is split, smaller nuclei are able to be formed and this leads to the release of a tremendous amount of energy.

It should be known that fission reaction is one of the ways in which energy is released on a massive scale. While, it s true that fission reactions could be deployed on the negative scale such as in the production of the fission bombs, we should also know that it could be used positively to generate electricity in nuclear power plants.

The equation of the fission of uranium-235 begins with the addition of a neutron to the nucleus. What is then formed is uranium -236 (U-236). The protons that are contained in the products are; krypton-36 and barium-56.

Learn more about fission reaction:https://brainly.com/question/6572079

#SPJ1

Alkyl halides are also known as haloalkanes. Halogen atoms have replaced one or more hydrogen atoms in an alkane to form compounds known as alkyl halides (fluorine, chlorine, bromine, or iodine).

learn more about alkyl bromide here

https://brainly.com/question/27181264

#SPJ4

Answer:

1.08 M

Explanation:

From the question given above, the following data were obtained:

Initial volume (V₁) = 45 mL

Initial concentration (C₁) = 6 M

Final volume (V₂) = 250 mL

Final concentration (C₂) =?

The final concentration of the solution can be obtained by using the dilution formula as illustrated below:

C₁V₁ = C₂V₂

6 × 45 = C₂ × 250

270 = C₂ × 250

Divide both side by 250

C₂ = 270 / 250

C₂ = 1.08 M

Therefore, the final concentration of the solution is 1.08 M.

Answer:

(A) Use volume displacement and the mass of the rock to calculate density.

Explanation: