Based on the physical properties of elements on the periodic table, which of the
following elements will most likely act as both a conductor and insulator? *
Aluminum
O Sulfur
O Copper
Silicon

Answer:

2Mg+O2 = 2MgO is the balanced equation of this reaction. When Mg +O2 reacts MgO is formed. The number of atoms of each element on reactant and product side must be equal

Explanation:

Ur welcome

Answer:

2Mg+O2 ⇒ 2MgO

About 9.8 g of potassium nitrate will dissolve in about 100 g of water at 0 degrees Celsius.

The term solubility curve refers to a plot of the concentration of a substance in solution against temperature. We can easily read off the amount of substance that has dissolved in solution using the solubility curve.

Looking at the solubility curve as shown, we can see that about 9.8 g of potassium nitrate will dissolve in about 100 g of water at 0 degrees Celsius.

Learn more about solubility curve:https://brainly.com/question/10843981

Answer:

569K

Explanation:

Q = 3.5kJ = 3500J

mass = 28.2g

∅1 = 20°C = 20 + 273 = 293K

∅2 = x

c = 0.449

Q = mc∆∅

3500 = 28.2×0.449×∆∅

3500 = 12.6618×∆∅

∆∅ = 3500/12.6618

∆∅ = 276.4220

∅2 - ∅1 = 276.4220

∅2 = 276.4220 + ∅1

∅2 = 276.4220 + 293

∅2 = 569.4220K

∅2 = 569K

When the temperature is increased, there is the increase in thermal energy of the system. The final temperature of the iron in kelvins is 570 K.

The energy is the ability to do work.

Given is the energy Q = 3.5 kJ = 3500 J, mass of sample m = 28.2 g, specific heat of iron Cp = 0.449 J(g•K).

The initial temperature in kelvins is T1 = 20°C = 20 + 273 = 293K

The heat is related to the temperature difference as

Q = m c ∆T

Substitute the values into the expression,

3500 = 28.2 × 0.449 × ∆T

3500 = 12.6618 × (T2 -T1)

T2 - T1 = 276.4220

T2 = 276.4220 K +293 K

T2 = 569.4220K

The temperature of the iron is approximately 570 K.

Thus, the final temperature of the iron in kelvins is 570K.

Learn more about energy.

https://brainly.com/question/1932868

#SPJ2

A girl roller-skating has kinetic energy.

Kinetic energy is the energy of motion. It is the energy possessed by an object due to its movement. In this case, the girl roller-skating has kinetic energy because she is moving.

Potential energy is the energy an object possesses due to its position or configuration. It is the energy an object has stored within it, ready to be released. An object at rest has potential energy because it has the potential to be set in motion and does work.

So, in this case, the girl roller-skating has kinetic energy because she is moving, and not potential energy because she is not at rest.

To learn more about kinetic energy, check out https://brainly.com/question/24933254

Answer:

bh yftd5xsdcfvgbhnjm

Explanation:

Answer:

We don’t have the enzymes necessary to remove nitrogen from the atmosphere; we get our nitrogen from the food we eat. ^^

Although almost 80% of the atmosphere is made up of nitrogen gas, most living things don't have the enzymes necessary to use nitrogen directly from the atmosphere. We obtain the nitrogen we need to make proteins and DNA, if we can't obtain it from breathing we can get it by eating organic plants and animals.

Nitrogen is a key element in the nucleic acids DNA and RNA, which are the most important of all biological molecules and crucial for all living things. DNA carries the genetic information, which means the instructions for how to make up a life form.

It is used to make amino acids in our body which in turn make proteins. The human body comprises 3% nitrogen (by mass). It is an essential part of amino acids (makeup proteins), nucleic acids (DNA, RNA), ATP (energy molecule), etc. It is nearly impossible to live without nitrogen.

Therefore, Although almost 80% of the atmosphere is made up of nitrogen gas, most living things don't have the enzymes necessary to use nitrogen directly from the atmosphere. We obtain the nitrogen we need to make proteins and DNA, if we can't obtain it from breathing we can get it by eating organic plants and animals.

Learn more about nitrogen here:

https://brainly.com/question/19938608

#SPJ2

The phase diagram shown represents the different phases of an unidentified substance at various temperatures and pressures. In order to label each region of the chart correctly, we need to understand the different phases and their transitions.

The phases typically included in a phase diagram are solid, liquid, and gas. The solid phase is usually represented by a line or region on the left side of the diagram, the liquid phase by a line or region in the middle, and the gas phase by a line or region on the right side.

To determine the relative densities of the liquid and solid phases at a given temperature, we need to look at the slopes of the phase boundaries. In general, the solid phase is denser than the liquid phase at a given temperature.  

To know more about phase diagram visit:

brainly.com/question/14742580

#SPJ11

Answer:

One mole of Vitamin A would be massive!

Explanation:

The molecular formula of Vitamin A is C20H30O and the molecular weight is 286.5 g/mol

meanwhile the molecular formula of Vitamin C is C6H8O6 and the molecular weight is 176 g/mol.

Thank you for joining brainly community!

Answer:

the protons will jump to the negatively charged object making it negatively charged

Answer:

I think the answer is c)

Explanation:

The equilibrium chemical equation Rb(s) + Cl₂(g) RbCl₂(s) has the appropriate product(s) for the reactivity of rubidium.

Magnesium chloride (MgCl₂) is created when the elements magnesium (Mg) and chlorine (Cl₂) mix. As a result, the reaction is a combination reaction, and the equation that balances it is as follows: Mg(s)+Cl₂(g)→MgCl₂(s)

For instance, salt chlorate, a typical household bleach, is created when chlorine, Cl₂, interacts with sodium hydroxide, NaOH, in a disproportionation process. Sodium and chlorine combine to make sodium chloride, a common table salt.

To know more about chemical equation visit :
brainly.com/question/30087623
#SPJ1

Among the given reactions, the reaction closest to having a ΔS (change in entropy) of zero at 25 degrees Celsius is reaction B: H2 (g) + I2 (s) -> 2HI (g).

Entropy is a measure of the disorder or randomness of a system. A reaction with a ΔS value close to zero indicates minimal change in entropy. To determine the relative ΔS values for the reactions, we consider the following factors:

A) C2H4 (g) + Br2 (l) -> C2H4Br2 (l)

This reaction involves the formation of a liquid from a gas and a liquid, which generally increases entropy.

C) N2 (g) + O2 (g) -> 2NO (g)

This reaction involves the formation of gas molecules from gas molecules, resulting in an increase in entropy.

D) CH3CHO (g) + 5/2O2 (g) -> 2CO2 (g) + 2H2O (g)

This reaction involves the formation of gas molecules from gas molecules, resulting in an increase in entropy.

E) 2NO (g) + O2 (g) -> 2NO2 (g)

This reaction involves the formation of gas molecules from gas molecules, resulting in an increase in entropy.

B) H2 (g) + I2 (s) -> 2HI (g)

In this reaction, a solid reacts with a gas to form a gas, resulting in a decrease in entropy.

Since reaction B involves a decrease in entropy, it is the closest to having a ΔS value of zero at 25 degrees Celsius.

Learn more about entropy here: brainly.com/question/20166134

#SPJ11

The pOH value of solution will be  -5.54.

By calculating the concentration of OH ions in a solution, pOH can be used to gauge how acidic or alkaline a solution is. The OH ion concentration's negative logarithm would be known as pOH.

Given that:

pH = 7.5

kw = 8.48×\(10^{-14}\)

pH = - log [\(H^{+}\)]

[\(H^{+}\)] = \(10^{-pH}\)

Put the value of pH in above equation.

[\(H^{+}\)]  = \(10^{-7.5}\)

[\(H^{+}\)] = 3.16 × \(10^{-8}\)

Put the value of given data in above equation.

[\(OH^{-}\)] =Kw / \([H^{+} ]\)

[\(OH^{-}\)]  =  8.48×\(10^{-14}\) /  3.16 × \(10^{-8}\)

[\(OH^{-}\)] = 2.6 × \(10^{-6}\).

pOH  = -log [\(OH^{-}\)]

pOH = =log [ 2.6 × \(10^{-6}\)]

pOH = log [2.9] - 6log 10

pOH = 0.46 -6

pOH = -5.54

Therefore, the pOH value will be -5.54

To know more about pOH

https://brainly.com/question/480457

#SPJ4

An audio source with a sound intensity 1,000 times the value of k would produce 30 decibels of sound, as represented by option G.

The equation given to model the number of decibels produced by an audio source is d = 10 log (1/k), where 1 is the sound intensity and k is a constant. To find the number of decibels produced by an audio source with a sound intensity 1,000 times the value of k, we substitute 1,000 for 1 in the equation.

d = 10 log (1/k) becomes d = 10 log (1,000/k).

Since log (1,000/k) can be simplified as log(1,000) - log(k) = 3 - log(k), the equation becomes d = 10(3 - log(k)).

To further simplify, we can use the logarithmic property log(a) - log(b) = log(a/b). Therefore, d = 10 log(1,000/k) becomes d = 10 log(1,000/k) = 10 log(1,000) - 10 log(k) = 30 - 10 log(k).

This means that an audio source with a sound intensity 1,000 times the value of k would produce 30 decibels of sound. Therefore, the correct option is G.

Learn more about sound intensity here:

https://brainly.com/question/32194259

#SPJ11

Low pH is detected by the methyl red (MR) test. The MR test is a commonly used microbiological test to determine the ability of an organism to produce and maintain stable acid end-products from glucose fermentation. Option D.

The test is performed by adding a pH indicator called methyl red to the test tube containing the bacterial culture and observing the color change of the solution. If the pH is low (acidic), the methyl red indicator turns red, indicating a positive test. On the other hand, if the pH is higher (less acidic), the methyl red indicator turns yellow, indicating a negative test. Therefore, the MR test is used to distinguish between mixed acid fermenters (positive MR test) and non-mixed acid fermenters (negative MR test) based on their ability to produce acidic end-products.

To learn more about the methyl red test:

https://brainly.com/question/31915384

#SPJ4

Full Question

which of the following is detected by the methyl red (mr) test? multiple choice

lactic

acid acetoin

2,3 butanediol

low ph

The Compounds A, B, and C are ionic compounds because they are solid at room temperature. Therefore, option B is correct.

A chemical compound known as an ionic compound is one that contains ions bound together by the electrostatic forces known as ionic bonding. Despite having both positively and negatively charged ions, or cations and anions, the molecule is generally neutral.

Ionic chemicals are brittle and rigid. When an ionic chemical is dissolved in water, it separates into ions. Ionic compound solutions and melting forms of these substances carry electricity, while solid materials do not. The chemical formula of an ionic compound is metal + nonmetal or polyatomic ions.

Thus, option B is correct.

To learn more about an ionic compound, follow the link;

https://brainly.com/question/9167977

#SPJ1

The ideal gas law formula is used to determine the missing values in questions. When dealing with problems that require solving for missing values using the ideal gas law formula, always ensure that all values are expressed in the correct units and temperature is converted to kelvin.

The ideal gas law formula is represented as PV = nRT, where P represents pressure, V represents volume, n represents the number of moles of gas, T represents the temperature in kelvin, and R represents the universal gas constant. Solve for missing values using the ideal gas law formula:1. 10°C, 5. 5 L, 2 mol, __ atm.The temperature must be converted to kelvin first: T(K) = T(°C) + 273.15K = 10°C + 273.15 = 283.15KPV = nRT

Rearrange the equation to isolate P: P = nRT / V

Substitute the given values:

P = (2 mol)(0.0821 L•atm/mol•K)(283.15K) / 5.5 L

: P = 8.28 atm

2. __ °C, 8. 3 L, 5 mol, 1. 8 atm.The equation PV = nRT can be rearranged to T = PV / nRThe temperature must be converted to kelvin first: T(K) = T(°C) + 273.15T = PV / nR

Substitute the given values: T = (1.8 atm)(8.3 L) / (5 mol)(0.0821 L•atm/mol•K)T(K) = T +

: T = 332 K or 59°C

The temperature must be converted to kelvin first:

T(K) = T(°C) + 273.15K

= 12°C + 273.15

= 285.15

KPV = nRT

Solve for n by rearranging the equation: n = PV / RT

Substitute the given values: n = (1.2 atm)(3.4 L) / (0.0821 L•atm/mol•K)(285.15K): n = 0.141 mol

The ideal gas law formula is used to determine the missing values in questions. When dealing with problems that require solving for missing values using the ideal gas law formula, always ensure that all values are expressed in the correct units and temperature is converted to kelvin.

To know more about ideal gas law visit:

brainly.com/question/30458409

#SPJ11

The balanced equation for the reaction is: 4Fe + 3O2 → 2Fe2O3. We can find the theoretical yield of Fe2O3 using stoichiometry. The stoichiometric ratio of Fe to Fe2O3 is 4:2 or 2:1.

The balanced equation for the reaction is: 4Fe + 3O2 → 2Fe2O3

We can find the theoretical yield of Fe2O3 using stoichiometry. The stoichiometric ratio of Fe to Fe2O3 is 4:2 or 2:1. Thus, the amount of Fe2O3 produced is: 2 mol Fe2O3/4 mol Fe x 55.85 g Fe/1 mol Fe2O3 = 27.93 g Fe2O3

Thus, the theoretical yield of Fe2O3 is 27.93 g. Next, we can calculate the percent yield:

percent yield = (actual yield / theoretical yield) x 100%

We are given that an excess of O2 reacted with 4.11 g of Fe and 4.62 g of Fe2O3 were isolated. The amount of Fe used is the limiting reactant and thus the amount of Fe2O3 produced is the theoretical yield. The actual yield is 4.62 g.The percent yield is: percent yield = (4.62 g / 27.93 g) x 100% = 16.58%

The percent yield of a reaction and explain the reason for obtaining a percent yield of less than 100%

A percent yield is a comparison of the actual yield to the theoretical yield, expressed as a percentage. The theoretical yield is the maximum amount of product that can be produced from a given amount of reactant. The actual yield is the amount of product that is actually obtained from a reaction in the laboratory. A percent yield of less than 100% means that the actual yield is less than the theoretical yield. There are several reasons why this could happen:

1. Incomplete reactions: The reactants may not react completely to form the products. This can happen if the reaction conditions are not ideal or if one of the reactants is impure.

2. Side reactions: Side reactions may occur that produce different products than what was intended. This reduces the amount of the desired product that is produced.

3. Losses during the experiment: Product may be lost during the experiment. This can happen if the product is difficult to handle or if it is lost during purification.

4. Experimental error: Experimental errors may occur that lead to incorrect measurements or incorrect calculations. This can result in a lower yield than expected.

A percent yield of less than 100% indicates that the reaction did not go to completion and that some of the reactants were wasted. A percent yield of 100% indicates that all of the reactants were used to produce the maximum amount of product possible.

To know more about stoichiometry visit: https://brainly.com/question/30218216

#SPJ11

The given chemical equation shows the decomposition of 9.00 moles of sulfur trioxide to sulfur dioxide and oxygen gas. The enthalpy change for this reaction is given as ΔH° = 198 kJ/mol.

Enthalpy change refers to the amount of heat energy released or absorbed during a chemical reaction. A positive value of ΔH° indicates that the reaction is endothermic, meaning it absorbs heat energy from the surroundings, while a negative value indicates an exothermic reaction, meaning it releases heat energy to the surroundings.

In this case, the given value of ΔH° is positive, indicating that the reaction is endothermic. Therefore, for the given reaction, the change in enthalpy can be calculated as follows:

ΔH = (9.00 mol) x (198 kJ/mol) = 1782 kJ

This means that when 9.00 moles of sulfur trioxide decomposes to sulfur dioxide and oxygen gas, 1782 kJ of heat energy is absorbed from the surroundings. Hence, the correct option is (e) 1782 kJ.

TO KNOW MORE ABOUT chemical equation CLICK THIS LINK -

brainly.com/question/30087623

#SPJ11

The solvent promotes an SN1 mechanism, leading to the formation of a carbocation intermediate.

When a solvent favors an SN1 mechanism, it enhances the formation of a carbocation intermediate by stabilizing the positively charged species. In this mechanism, the leaving group departs, creating a carbocation that can undergo various reactions. However, a sigmatropic rearrangement occurs, wherein the carbocation rearranges its atoms through a concerted intramolecular process, resulting in a new molecular structure. This rearrangement provides increased stability or specific regioselectivity to the reaction. Understanding the influence of solvents on reaction mechanisms and subsequent rearrangements is crucial in organic chemistry.

Learn more about solvent favors

brainly.com/question/30388589

#SPJ11

An increase in temperature would result in an increase of chlorine gas. An increase in temperature would shift the equilibrium to the side with the greater number of moles of gas, which is the side with chlorine gas. This results in an increase in the concentration of chlorine gas.

According to Le Chatelier's Principle, when a system at equilibrium is subjected to a stress, the system adjusts to counteract the stress and reestablish equilibrium.

Chlorine is used as a bleach in the manufacture of cloth and paper. It can also play a major role in the production of pesticides, rubber, and solvents. It is used in drinking water and swimming pool water to destroy dangerous bacteria.

To know more about equilibrium, visit here:

https://brainly.com/question/28527601

#SPJ4

In given reaction 2NOCl(g) ⇌ 2NO(g) + Cl₂(g ) Chlorine gas would rise as a result of an increase in temperature.

The equilibrium would shift to the chlorine gas side, which has a greater number of moles, as a result of an increase in temperature. Chlorine gas concentration rises as a consequence of this.

Le Chatelier's Principle states that when a system is in equilibrium and is put under stress, it adjusts to counteract the stress and get back into equilibrium.

When making paper and cloth, chlorine is used as a bleach. Additionally, it may play a significant role in the production of solvents, rubber, and pesticides. It is used to kill harmful bacteria in swimming pool and drinking water.

Learn more about Le chatelier's principle :

brainly.com/question/2943338

#SPJ4

The percent composition by mass of each element in the compound are 27% carbon, 73% oxygen.

The number you have now will be between 0 and 1. To obtain the composition in percent, multiply it by 100%.

The mass of an element in 1 mole of the compound is divided by the compound's molar mass, and the result is multiplied by 100 to determine the mass percent of the element in the compound.

3.4 moles of carbon / molar mass * 100 = 27% carbon

6.8 moles of oxygen  / molar mass * 100 = 73%

To learn more about percent composition refer to:

https://brainly.com/question/17021926

#SPJ1

Answer:

Heat is something you can't control

Explanation:

Plastic is something you could control like moving it around

To create 600 cm3 of 0.05 Molar solution, we must dilute 2.5 cm3 of the 1.20 M solution.

The following dilution equation can be used to address this issue:

M1V1 = M2V2

where M1 denotes the starting concentration, V1 the starting volume, M2 the ending concentration, and V2 the ending volume.

We intend to diluted the initial concentration (M1) to a final concentration (M2) of 0.05 M. We know that the starting concentration (M1) is 1.20 M. Also, we are aware that the final volume (V2) is 600 cm3.

Using these numbers as a substitute in the dilution equation, we obtain:

(1.20 M)V1 = (0.05 M)(600 cm^3)

When we solve for V1, we get:

V1 = (0.05 M)(600 cm^3) / 1.20 M

V1 = 2.5 cm^3

To know more about Molar solution-

brainly.com/question/14175637

#SPJ4

Answer:

C stays The same.

Is the answer.

The true statement about mixtures is that they do not have specific compositions (option B).

Mixture is a substance made up of two or more chemical components that are not chemically linked.

This further means that the constituents of a mixture maintain or keep their individual chemical identities because there is no breaking of bonds.

As opposed to mixtures, compounds are made up of constituents that are chemically bonded to one another, hence, possess a definite composition.

Examples of mixtures are as follows:

Therefore, the true statement about mixtures is that they do not have specific compositions.

Learn more about mixtures at: https://brainly.com/question/24898889

#SPJ1

Answer:

Concept: Chemical Analysis

Hydrocarbons are insoluble in water because the majority of their bonds are polar covalent carbon-to-hydrogen linkages hence option b is the right choice.

A hydrocarbon is an organic molecule in organic chemistry that is made completely of hydrogen and carbon. The majority of hydrocarbons are colorless and hydrophobic, and their scents are either insignificant or best characterized by those of gasoline and lighter fluid. They can be gases, liquids, low-melting solids, or polymers, and they can also exist in a wide variety of molecular configurations and phases.

Hydrocarbons are the naturally occurring petroleum, natural gas, and coal, as well as their hydrocarbon derivatives and refined forms, in the fossil fuel industry. The primary source of energy for the entire planet is the burning of hydrocarbons.

Want to know more about hydrocarbons visit the link which is given below;

https://brainly.com/question/17578846

#SPJ4