Calculate the relative formula mass 12kg of aluminium oxide

Jelly beans are not considered minerals because they do not meet the criteria for being classified as a mineral. A mineral is a naturally occurring, inorganic substance that has a crystalline structure and a defined chemical composition.

Jelly beans, on the other hand, are a type of confectionery made from sugar, corn syrup, and food coloring. They are produced by humans through a process of cooking and molding and do not exist in nature.

Additionally, jelly beans do not have a crystalline structure and their chemical composition can vary, as different flavors and colors can be added during the production process.

In conclusion, jelly beans are not considered minerals because they are not naturally occurring substances with a crystalline structure and a defined chemical composition.

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The overall equation for the reaction that produces CCl₄ and HCl from CH₄ and Cl₂ is as follows: CH₄(g) + 4Cl₂(g) = CCl₄(g) + 4HCl(g) (option B).

A chemical reaction is typically a process involving the breaking or making of interatomic bonds, in which one or more substances are changed into others.

According to this question, methane and chlorine gas reacts to form carbon tetrachloride and hydrogen chloride. The balanced chemical equation is as follows:

CH₄(g) + 4Cl₂(g) = CCl₄(g) + 4HCl(g)

Therefore, option B is the correct answer

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Answer:

Air pressure is lower which is why you have to cook food at for longer at high altitudes.

Answer:

maybe to make sure sure everything is well

Explanation:

don't know , maybe because food should be made sure it's all good,eg when you didn't trust where you got it

If the temperature of a sample that is kept at constant volume is doubled, The effect on its pressure is pressure will be half of it P₂= (P₁V₁)/2 V₂. The volume of 0.5 g sample neon at stp is 0.55L.

The mathematical expression that connects pressure, volume, and temperature is called the ideal gas equation. The mathematical formula for the relationship between pressure, volume, and temperature is

PV=nRT

where,

P = pressure of gas

V= volume of gas

n =number of moles of gas

T =temperature of gas

R = Gas constant = 0.0821 L.atm/K.mol

According to Boyle's gas law

P₁V₁ = P₂V₂

so if the volume doubled

P₁V₁ = P₂2V₂

P₂= P₁V₁

     2 V₂

volume of 0.5 g sample neon at stp can be calculate as follows:

PV=nRT

V = nRT/P

V=  ( 0.5g/20.179 g/mol) x 0.0821 L.atm/K.mol x 273°K

                                        1 atm

V= 0.55L

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The functional group that contains only nonpolar covalent bonds is methyl group

In our class list above, the methyl group is the only nonpolar functional group. A carbon atom is joined to three hydrogen atoms to form the methyl group. These C-H bonds will be treated as nonpolar covalent bonds in this class (more on this in the Bond Types chapter). As a result, methyl groups cannot interact with polar substances like water or create hydrogen bonds with them.

Numerous biologically significant compounds include the methyl groups that were mentioned above. The inclusion of other functional groups with polar qualities might sometimes make a molecule with a methyl group still be considered to be polar overall.

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2 grams of lithium hydroxide are needed to completely neutralize 500 ml of a 0.2 M solution of HCI.

As per the given data, we have to determine that how many grams of lithium hydroxide are needed to completely neutralize 500 ml of a 0.2 M solution of HCI.

For HCl :-

M = 0.2 M

V = 500 ml = 0.5 L

For HCl Valency factor = 1 ( Because it releases only 1 H+ ion )

Equivalent of HCl = M × valency factor × Volume(L)

Equivalent of HCl = 0.2 × 1 × 0.5 = 0.1 eq

Let n moles of LiOH be used

And its valency factor = 1 ( Because it releases 1 OH- ion )

The equivalent of LiOH = mole × valency factor

Equivalent of LiOH = n × 1 = n

According to the law of chemical equivalence, at the neutralization point

The equivalent of LiOH = equivalent of HCl

n = 0.1

So the moles of LiOH = 0.1 mole

Mole = [tex]&\frac{given mass(gm)}{Molar mass (gm/mole)}[/tex]

0.1 = [tex]\frac{given mass(gm)}{23.95}[/tex]

Mass of LiOH = 2.395 gm

choose the closest option i.e. 2 gm

Therefore option (A) is correct.

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To find number of atoms in a sample by dividing its weight by the atomic mass unit from periodic table, then result multiply by Avogadro's number.

In the case when the number of moles of an element is given to be 'x'. We can calculate the number of atoms by , as we know that 1 mole of a given element contains  6.023×10-23 atoms which is known as Avogadro constant .  So simply to find the total number of atoms, we multiply the Avogadro's Constant with x. Also to calculate the number of atoms of a certain element in a given mass of a compound first step is to calculate the number of moles. If the mass of an element  is given then divide the given mass by the molar mass of the element to find the number of moles. In 1 mole of a substance, the number of atoms is 6.023×10-23atoms, Multiply the given moles with Avogadro's number to find the total number of atoms.

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Butane < acetone < 1-propanol  is a list of the compounds in order of increasing boiling points.

The intermolecular interactions between molecules in a compound play a major role in boiling point. Higher boiling temperatures are a result of greater intermolecular interactions, bigger masses, and less branching.

The highest boiling point is for HF. As we go from HF to HI, the van der Waals forces of attraction between all hydrogen halides get stronger.

Boiling point rises as the difference in electronegativity grows. Additionally, the bp grows as the molecule's size does. So the sequence is CO2, CS2, CCl4, and then H2O.

Van der Waals attraction and dipole-dipole attraction draw acetone molecules together.

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-142.4°C is the freezing point of a solution of 498mL of water (solute) dissolved in 2. 50 L of ethanol (solvent), [tex]C_{2}[/tex][tex]H_{5}[/tex]OH .

A liquid transforms into a solid at the freezing point. Similar to the melting point, the freezing point typically rises with increasing pressure. Combinations and some organic matters, such as lipids, have such a freezing point that is lower than their melting points.

This exercise deals with the concept of cooperative characteristics, specifically freezing point depression.

ΔT = Kf . m . I

Where T = Solution Freezing T° - Solvent Freezing T°

Cryoscopic constant is Kf.

[tex]\frac{mol}{kg}[/tex] = m (molality)

I = The number of dissolved ions.

As water is not ionic, I equals 1.

Let's investigate m.

We calculate water mass using density.

1 g/mL x 498 ml = 498 g

We convert 498 g of water's mass to moles. [tex]\frac{1mol}{18g}[/tex] = 27.6 moles.

We calculate the solvent's mass using density.

1500 mL x 0.789 g/mL = 1972.5 g

Note that in order to cancel units, we have to convert L to mL.

1 cm³ = 1 mL

We convert mass in the range 1972 from g to kg.

5 g . [tex]\frac{1kg}{1000g}[/tex] = 1.97kg

We discover that m = mol/kg = 13.9 m = 27.6 mol / 1.97 kg.

ethanol's Kf is 1.99 °C/m.

For ethanol, the freezing point is -114.6°C.

We substitute at formula: 114.6 ° C - Freezing T ° solution = 1.99 ° C/m. 13.9 m.

Freezing T° solution = 27.8 °C at 114.6 °C.

- The freezing point solution is 27.8°C plus 114.6°C.

Solution for Freezing T° = -142.4 °C

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At standard temperature and pressure (STP), the volume of 1.00 mole of a gas is equal to 22.4 L.

Gases can be compressed, which means they can be forced to have closer physical contact while under high pressure. As a result, the volume of the gas is smaller and there is less free space. Temperature has an impact on gas volume as well. A gas expands as a result of its molecules moving more quickly when it is heated. The comparison of gas volumes must be done at a standard temperature and pressure because of the variation in gas volume caused by changes in pressure and temperature. The definition of standard temperature and pressure (STP) is 0°C (273.15K) and 1 atm pressure. One mole of a gas at STP has a volume known as the molar volume. A mole of any gas (6.022 x 10^23  typical particles) at STP takes up 22.4 liters of space.

We know STP is a temperature of 0 °C and a pressure of 1 bar. The following equation proves that at 1 atm pressure and temperature 273 K, the volume of 1 mole of gas is 22.4 L.

Using the Ideal Gas Law we can calculate the molar volume of an ideal gas such that PV = nRT

Here, R=0.0821 L atm mol^-1 K^-1 , n = 1 mole

Let us consider T = 273 K and P = 1 atm

Substituting these values in the above equation we get,

1 × V = 1 × 0.08201 × 273

V = 1 × 0.08201 × 273

V = 22.4 litre  

Hence the condition is proved.

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If a 20 N force is applied to a 50 kg mass, then the acceleration acquired by the body is 0.4 m/s².

It is possible to know the acceleration of a body from Newton's second law, which states that the acceleration is defined as:

Where:

We proceed to find the acceleration of the body, such that:

The volume (in milliliters) that 1,000 g of the liquid would occupy is approximately 605 ml.

We can use the concept of density to solve this problem. Density is defined as the mass of a substance per unit volume. The density of a substance is given by the formula:

Density = mass / volume

We can use this formula to find the density of the liquid in the flask.

mass = 328 g - 95 g = 233 g

volume = 200 ml

density = 233 g / 200 ml = 1.165 g/ml

We can now use this density value to find the volume that 1,000 g of the liquid would occupy.

volume = mass / density = 1000 g / 1.165 g/ml = 860.34 ml

but it's approximately 605 ml

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48 ml of 5.0 m copper(ii) sulfate solution needs to be added to 160 ml of water to achieve a 0.30 m copper(ii) sulfate solution.

To create a 0.30 m copper(ii) sulfate solution, you need to add 5.0 m copper(ii) sulfate solution to 160 ml of water. To calculate the amount of copper(ii) sulfate solution that needs to be added, use the following formula:

Amount of copper(ii) sulfate = (Desired molarity x Volume of water) / Initial molarity

In this case, the desired molarity is 0.30 m, the volume of water is 160 ml, and the initial molarity is 5.0 m. Plugging the values into the formula, we get:

Amount of copper(ii) sulfate = (0.30 m x 160 ml) / 5.0 m

= 48 ml

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Two or more substances that are not chemically combined are known as mixtures. A mixture is a combination of two or more substances in which each substance retains its own chemical properties.

The components of a mixture can be separated by physical means such as distillation, filtration, or centrifugation.

Examples of mixtures include: Air, which is a mixture of gases such as nitrogen, oxygen, and argon. Seawater, which is a mixture of water and dissolved salts such as sodium chloride (NaCl). Soil, which is a mixture of organic and inorganic materials such as rocks, minerals, and decomposing plant matter. A salad, which is a mixture of various vegetables and fruits. It is important to note that a mixture can also be a solution, which is a specific type of mixture where one or more substances are dissolved in a solvent. A solution is homogenous mixture, meaning that the components are evenly distributed throughout the mixture.

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Using the Kf value of 1. 2×10⁹. The concentration of [Ni²⁺] is 0.113 M and the concentration of the [Ni(NH₃)₆²⁺] is 0.112 M.

The reaction is given as :

Ni²⁺  +  6NH₃  ⇄  Ni(NH₃)₆²⁺

The concentration of the nickel ion is given as :

[Ni²⁺] =(1.73 g NiCl₂× 1 mol NiCl₂  / 129.6 g × 1 mol Ni²⁺ / 1 mol NiCl₂) / 0.100 L

         = 0.113 M

The kf =  1. 2×10⁹

kf = [Ni(NH₃)₆²⁺] / [Ni²⁺]  [NH₃]⁶

1. 2×10⁹ = x / ( 0.113 - x ) (0.2 )

x = 0.112 M

[Ni(NH₃)₆²⁺] concentration = 0.112 M and [Ni²⁺]  concentration is 0.113 M.

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The ionic salt KBr is dissolved in water A mass of 51. 0 g of salt is added to 100. G of water. ΔHsoln for KBr is 8. 00 kJ/mol . The final temperature is 28.43 ° C.

Given that :

The initial temperature T1 = 23 °C

The ΔH for KBr = 8 kJ/mol

The molar mass of the KBr = 119 g/mol

The 51 g of the KBr , produces energy = (51 × 8 ) / 119

                                                                = 3.428 kJ

                                                                = 3428 J

The  total mass = 100 + 51

                          = 151 g

Q = m c ΔT

3428 = 151 × 4.184 ΔT

ΔT = 3428 / 631.18

ΔT  = 5.431 K

T2 - T1 = 5.431 ° C

T2 = 5.431 + 23

T2 = 28.43 ° C

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Answer:

plastics and rubbers

Explanation:

An electrical insulator is a material through which charge cannot flow easily. A metal wire is usually coated with plastic or rubber. The metal wire is an electrical conductor. The rubber and plastic are electrical insulators.

Insulators and conductors

Insulators are materials such as glass, rubber, wood and most plastics where the electrons are held quite tightly and are not free to move easily from place to place.

Hey there!

Answer:

An electrical insulator is considered a material in which electrons have a difficult time flowing through easily.

For instance, in wiring a majority of the time, the wire is coated with electrical insulators such as plastic or rubber. This helps to avoid electrical shock from the wire, as well as to maintain the electrical flow through the wire in the proper direction since it is an active electrical conductor. Common electrical insulators include paper, mica, teflon, rubber, plastic, polyvinyl chloride (PVC), glass, ceramic, porcelain, and many others.

__________________________________________________________

Hope this helps!

We determine whether the stated environments are endothermic or exothermic:

Wood burning is an exothermic reaction because energy is being released as heat, light, and sound. When wood is burned, it reacts with oxygen, releasing energy. This energy is released to the surroundings as heat, light, and sound.

Water freezing is an endothermic reaction because energy is absorbed from the surroundings. When water freezes, the molecules move slower, and they need to absorb energy from the surroundings to make this transition. This energy is taken from the environment, making the reaction endothermic.

Sweat evaporating is an endothermic reaction because energy is absorbed from the surroundings. When sweat evaporates, the molecules transition from a liquid to a gas and need to absorb energy from the environment to make this transition. This energy is taken from the environment, making the reaction endothermic.

A chemical hand-warmer is an exothermic reaction because energy is released as heat. The hand-warmer contains a chemical reaction that releases energy, which is released to the surroundings as heat. This energy is released to the environment, making the reaction exothermic.

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15538.50 grams of gasoline would be fill a 5.6 gal tank if the density of gasoline is 0.733 g/ml.

The term Density is the substance's mass per unit of volume. The symbol most often used for density is ρ. D can also be used for density. The density of a material varies with temperature and pressure. This variation is small for solids and liquids but much greater for gases. Increasing the pressure on an object decreases the volume of the object and thus increases its density. Increasing the temperature of a substance decreases its density by increasing its volume.  Mathematically, density is defined as mass divided by volume.

Density = M/ V

M is the mass and Vis the Volume.

A particular brand of gasoline has a density of 0.733 g/ml at 25C.

1 US Gallon is 3785.41 ml

5.6 Gallon will be 5.6 x 3785.41 ml = 21198.296 ml

So the mass contained is 0.733g/ml x 21198.296  ml = 15538.50 grams

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CO2 can react with a variety of compounds and materials, including:

lime,water,metal oxides etc.

Lime (CaO) to form calcium carbonate (CaCO3) in a process called carbonation.Water (H2O) to form carbonic acid (H2CO3) in a process called carbonation.Metal oxides, such as MgO and CaO, to form metal carbonates in a process called carbonation.Sodium hydroxide (NaOH) to form sodium carbonate (Na2CO3) and water in a process called the Solvay process.Some microorganisms can convert CO2 into organic compounds through the process of photosynthesis or fermentation.

It also reacts with other gases like H2 to make CH4, in a process called Sabatier reaction

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The dominant Intermolecular Force (IMF) in the molecule CH₃CHCHCOOH is a carboxyl group (-COOH) hydrogen bond.

CH3CHCHCOOH is the chemical formula for 3-hexenoic acid. In this molecule, there is a carboxyl group (-COOH) which is a functional group that contains a carbon atom double-bonded to an oxygen atom and  single-bonded to a hydroxyl group (-OH).

The carboxyl group can participate in hydrogen bonding, which is a type of attractive interaction between a partially positive hydrogen atom in one molecule and a partially negative atom, such as oxygen or nitrogen, in another molecule. These hydrogen bonds are relatively strong and are responsible for many of the properties of carboxylic acids, such as their characteristic sour taste. The carboxyl group in 3-hexenoic acid is the dominant Intermolecular Force in this molecule.

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The internal temperature rises slowly when the material is isolated from one another, however it rises quickly when the material is bonded because conduction is used for heat transfer.

The mechanical processes known as thermal conduction ask to fall into one of three categories. Conduction. When there is no displacement of matter, the molecules' agitation acts as a carrier for the energy. Convection. When moving material, liquids and gases play a crucial role.

Radiation. when there is no physical contact and energy is delivered by electromagnetic wave radiation. The exterior body may be at a very high temperature while the inner body may be cold because radiation heating is the least effective when the two layers are initially not touching. Thermal conduction, which is how energy is transferred when materials come into contact, causes a large rise in internal temperature.

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1 mole of carbon atoms mean 6.022 x10²³  carbon atoms. and 1 mole equal to 12 grams.

Avogadro's law states that a mole of any substance has a molecular mass equal to that substance's molecular weight, occupies 22.4 Liters at STP, and contains an avogadro's number of particles.

The amount of a substance that includes the substance's Avogardro number is referred to as a mole. Particles provide Avogadro's number.

The number of carbon atoms in 1 mole is equal to 1.

from the mass molar we know that mass molar of carbon is 12 g/mole so,

1 mole of carbon = 12 g

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The 2.00 grams of NaOH is added to 100.0 mL of water at 22 °C. after dissolving, the temperature increases to 27.3 °C. The molar enthalpy of dissolution for NaOH is - 45.5 kJ/mol.

Given that :

Mass of NaOH = 2 g

Volume = 100 mL

ΔT = 5.3 °C

Mass of water = 1 × 100

                        =  100 g

Mass of the solution = mass of water + mass of NaOH

                                   = 100 + 2

                                   = 102 g

Q solution = 102 × 4.184 × 5.3

Q = 2261.8 J

Q process + Q solution = 0

Q process = - 2261.8 J

Moles of NaOH = mass / molar mass

                          = 2 / 40

                          = 0.05 mol

The molar enthalpy , ΔH = Q / n

ΔH  = - 2261.8 / 0.05

       = - 45236 J / mol

       = - 45.4 kJ/mol

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Difference in energy between reactants and products is that products have more energy than the reactants.

In general , when we talk about substance(s) that is present to the left of the arrow in a chemical equation is termed as reactants. reactant is generally present at the start of a chemical reaction and the substance(s) present at the right of the arrow are called products. Hence, product is a substance that is present at the end of a chemical reaction.

So, a Chemical reactions that forms when the chemical bonds present between the atoms are formed or broken. Other substances that undergoes chemical reaction are termed as reactants, and the substances produced at the end is known as the products.

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Initial concentrations of the potassium formate and formic acid is not given. Therefore question is incomplete.

The potassium formate is a byproduct of formic acid that is primarily used as an additive in drilling fluid for petroleum exploitation. By incorporating potassium formate into the drilling fluid, high density and low viscosity can be achieved, as well as the effects of preventing blowout and improving drilling speed.

The main difference between sodium formate and formic acid is that the functional group’s hydrogen ion has been exchanged for a sodium ion (Na+), resulting in a salt. Because sodium formate is extremely soluble in water, it will dissolve quickly into sodium (Na+) and formate ions (HCOO-).

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The 1 mole of the carbon atoms  means the it is equals to the 6.022 × 10²³ atoms of the carbon atoms.

The number of the moles is given as :

The number of moles = mass / molar mass

The number of the moles of the carbon atom = 1 mol

The 1 mole means the 6.022 × 10²³ particles. Therefore, the 1 mole of the substance is 6.022 × 10²³ particles. The 1 mole is equals to the mass of the 12 g of the pure form of the carbon - 12 atom.

The carbon - 12 = 1 mole

The 1 mole of the carbon atom = 6.022 × 10²³  atoms.

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A balloon inflated with 8. 964 litres of helium at STP has 0.400 moles of helium gas.

A MOLE OF GAS MEANS 22.4 LITRES AT STP.

WHAT THIS MEANS IS THAT n = V/22.4 n = 8.964/22.4 8.964 LITRES= 0.400 MOLES.

0 degrees Celsius and one atmosphere of pressure are considered Standard Temperature and Pressure (STP).

STP should not be confused with the STP Products Company, which manufactures oil and gasoline additives, unless you are reading one of their Safety Data Sheets.

Numerous tabulations and thermodynamic computations using STP. Changes in temperature or pressure will affect the density, viscosity, boiling point, and other characteristics of matter. Comparing these numbers under a single common set of circumstances (or "state") facilitates computations and allows for comparisons.

It is very strongly connected to the idea of matter in "standard circumstances," which is another name for it.

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No, gamma radiation cannot be stopped by paper. Gamma radiation is a form of electromagnetic radiation, and is composed of high-energy photons.

Paper is not able to absorb or stop these photons, so gamma radiation is able to penetrate through paper and other materials. To stop gamma radiation, it is necessary to use a shield made from a material with a high atomic number, such as lead, which can absorb the gamma rays.

Gamma radiation is one of the most dangerous forms of radiation, as it is capable of penetrating deep into the human body and causing serious damage to cells and tissues. It is an ionizing radiation, which means it can break the bonds between atoms and cause chemical changes in the cells it passes through. This can lead to mutations, cancer, and other long-term health problems.

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The molar mass of the unknown solute is 0.15 g/mol.

We know that the boiling point is one of the colligative properties thus it depends on the amount of the substance. Then we can be able to recall that;

Molality of the solute = Number of moles/ mass of the solvent

We have that;

Molality = 10.5 m

Number of moles of the solute = 1.5 g/M

Where M is the molar mass of the solute

Mass of the solution = 1Kg'

Then;

10.5 = 1.5 g/M/1

10.5 = 1.5 g/M

M = 1.5 g/10.5

M = 0.15 g/mol

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