Comfi-Rester Furniture buys wood, padding, upholstery, and other inputs, and then cuts, sews, and assembles these materials in a way that results in high-quality, comfortable chairs and sofas. This process creates _____ utility.

Answer:

600 cm^3

Explanation:

The volume of a coke cup is 600 ml. So the volume in cubic centimeter is 600 cm^3

Volume is defined as measure of 3 dimensional space occupied by a matter, substance or enclosed by a surface.

Volume is measured in cubic unit.

Cubic centimeter is commonly used as the SI unit of volume.

One cubic centimeter correspond to the volume is equal to one millimeter.

Cubic centimeter is used to measure the volume of small things.

As

    1 cm^3 = 1 cm

    1cm^3 = 1ml

So

    600 cm^3 = 600 ml

Thus, volume of a coke cup is 600 ml. So the volume in cubic centimeter is 600 cm^3

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Answer:

Ionic

Explanation:

I heard this somewhere

The magnification of the magnifying glass is approximately 1.44.

To calculate the magnification of the magnifying glass, we can use the formula:

Magnification = (image distance) / (object distance)

In this case, the magnifying glass is held 10.4 cm from the mole, so the object distance (d₀) is 10.4 cm. The focal length (f) of the magnifying glass is given as 15.0 cm.

Using the formula, we can calculate the magnification (M):

M = (image distance) / (10.4 cm)

The magnification of a magnifying glass is typically assumed to be the ratio of the image distance to the least distance of distinct vision (25 cm for a relaxed eye). Therefore, we need to find the image distance (dᵢ) in terms of the least distance of distinct vision.

Using the lens formula: 1/f = 1/d₀ + 1/dᵢ

We can rearrange the formula to solve for the image distance (dᵢ):

1/dᵢ = 1/f - 1/d₀

Substituting the given values:

1/dᵢ = 1/15 cm - 1/10.4 cm

Calculating the result:

1/dᵢ ≈ 0.0667 cm⁻¹

dᵢ ≈ 15 cm

Now we can substitute the values for image distance (dᵢ) and object distance (d₀) into the magnification formula:

M = 15 cm / 10.4 cm

Simplifying the calculation:

M ≈ 1.44

Therefore, the magnification of the magnifying glass in this scenario is approximately 1.44.

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Answer:

Explanation:

SANA PO MAKATULONG PO YUNG SAGOT NA BINIGAY KO

Answer:

In order of the colors of the pH test papers from most acidic solutions to most alkaline solutions, the colors of the pH test papers would be

               Red > Orange/Pink > Purple > Blue

(Red) Most acidic                                (Blue)Most alkaline

Explanation:

We can use the different colors of pH test papers to determine the acidity or alkalinity of a solution.

Definitions

A pH test paper is a strip of indicator paper which changes colour when placed in acidic or alkaline solutions.

A solution is said to be acidic if it turns the colour of the pH test paper RED

A solution is said to be alkaline/basic if it turns the colour of the pH test paper BLUE

Color changes

If the pH test paper turns red, then the solution is a very strongly acidic solution with pH less than 3 ( ie pH between 1-3)

If the pH test paper turns orange or pink, then the solution is a weak acidic solution with pH greater than 3 ut less than 7

If the pH test paper turns purple, then the solution is a weak alkaline solution with pH greater between 8-11

If the pH test paper turns blue, then the solution is a very strong alkaline solution with pH between 11 - 14

Summary

Therefore, in order of color changes from the most acidic solutions to most alkaline solutions, the colors of the pH test papers would be

Red > Orange/Pink > Purple > Blue

Most acidic                                Most alkaline

Answer:

d<c<a<b

Explanation:

Answer:

1.15.........................

Answer:

The correct option is;

A. 0

Explanation:

The ammonia molecule has four pairs of electron whereby being located around the central nitrogen atom is tetrahedral in shape.

Of the four pairs of electrons, three are the bonds between nitrogen and hydrogen, such that there is only one lone pair of electron in the ammonia molecule that is located on the central nitrogen atom

The one electron on each hydrogen atoms and one of the electrons on the nitrogen atom form a bonding pair of electrons, that is the bonding pair of electrons are shared by the two nuclei, hydrogen and nitrogen

Since a lone pair are a pair of electrons attached to only one nucleus, the hydrogen in ammonia has no lone pair of electrons.

A catalyst used in a reaction remains unchanged

100g of NaNO3 will dissolve in 100 grams of water

A homogeneous mixture of solutions of one or more solutes in a solvent. Adding sugar cubes to your tea or coffee is an example of a common solution. The ability of a sugar molecule to dissolve easily is called solubility. The term solubility can therefore be defined as the property of a substance (solute) to dissolve in a particular solvent. A solute is a substance that is either a solid, liquid, or gaseous solution in a solvent.          

Here it is given that in 100g of water at temperature 35°C the amount of NaNO3 will dissolve is 100g we get it from the solubility curve

The graphical relationship between solubility and temperature is called the solubility curve. A solubility curve shows the change in solubility of a solid at different temperatures in a solvent. In the figure, temperature variation is plotted on the x-axis and solubility is plotted on the y-axis.

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Calcium oxide is used to remove the pollutant so2 from smokestack gases. the overall reaction is:

CaO(s)+SO2​(g)+ 1/2 O2​(g)CaSO4​(s)

What is calcium oxide?

Calcium oxide (CaO), commonly referred to as quicklime or burnt lime, maybe a  widely used chemical compound.  it's a white, caustic, alkaline, crystalline solid at temperature.

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Answer: A

Explanation: A

Answer:

mass of iron in grams  = 1.493×\(10^{-23}\) g

Explanation:

Since one mole of anything is equal to 6.022×\(10^{23}\) of that thing, we can apply that to atoms as well. 1 mol of iron = 55.85g. i.e. the molar mass of iron = 55.85g/mol.

To find the number of moles present, we can divide the number of atoms by the number of atoms in 1 mole, i.e Avogadro's Constant (6.022×\(10^{23}\)).

\(\frac{N}{N_{A}} = n\)

∴ n(Fe) = 502/6.022×\(10^{23}\) = 8.3361×\(10^{-22}\) mol of iron

Finally, to find the mass of iron present, we can divide the number of moles by the molar mass.

\(\frac{n}{M}} = m\)

∴ m(Fe) = 8.3361×\(10^{-22}\)/55.85 = 1.493×\(10^{-23}\) g. (4 sig. fig.)

you have to put them togeter

The forecast indicates a 20% chance of rain, which means there is a low probability of precipitation occurring.

Rain is a type of precipitation that occurs when water droplets fall from the atmosphere and reach the Earth's surface. It is a vital part of the water cycle, which involves the continuous movement of water from the Earth's surface to the atmosphere and back again.

Rain is formed when water vapor in the atmosphere condenses into tiny water droplets or ice crystals, which combine to form clouds. When the clouds become heavy enough, the water droplets or ice crystals fall to the ground as precipitation, which can take the form of rain, snow, sleet, or hail.

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Answer:

43.2 moles of carbon dioxide are required and 421g of glucose could be produced

Explanation:

Based on the reaction:

6CO2 + 6H2O → C6H12O6 + 6O2

1 mole of glucose, C6H12O6, requires 6 moles of carbon dioxide. 7.2moles of glucose requires:

7.2mol C6H12O6 * (6mol CO2 / 1mol C6H12O6) =

618g of CO2 -Molar mass: 44.01g/mol- are:

618g * (1mol / 44.01g) = 14.04moles CO2

Moles C6H12O6:

14.04moles CO2 * (1mol C6H12O6 / 6mol CO2) = 2.34moles C6H12O6

Mass glucose -Molar mass: 180.156g/mol-

2.34moles C6H12O6 * (180.156g / mol) =

The equilibrium concentration of CH3OH can be determined by the following formula: [CH3OH] = [CO] × Kc= 0.04 × 2.3 × 104= 0.92 M Therefore, the concentration of CH3OH at equilibrium is 0.92 M.

The given chemical equation can be used to represent the synthesis of methanol from carbon monoxide and hydrogen gas.CO(g) + 2H2(g) ⇌ CH3OH(g)The equilibrium constant for this reaction at 25 ∘C is Kc = 2.3 × 104

In this case, we are required to use the equilibrium-constant expression to determine the concentration of methanol at equilibrium, considering the concentration of the reactants.

Suppose that the molar concentrations for CO and H2 at equilibrium are [CO] = 0.04 M and [H2] = 0.04 M. Using the law of mass action, we can write the equilibrium-constant expression for the given reaction as:

Kc = [CH3OH]/[CO][H2]Substituting the given values,

we have:2.3 × 104 = [CH3OH]/(0.04)2 Since the stoichiometric ratio of CO to CH3OH is 1:1,

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The options that can be used to show the spin state of an unpaired electron in an orbital are: b. Spin up c. Spin down

The spin state of an electron refers to its intrinsic angular momentum. In quantum mechanics, it is represented by the spin quantum number, which can have two possible values: +1/2 (spin up) or -1/2 (spin down). These values indicate the direction of the electron's spin along a particular axis. An unpaired electron in an orbital can have either spin up or spin down, depending on its individual properties. Electrons can be paired when they occupy the same orbital but have opposite spin states, adhering to the Pauli exclusion principle. However, in the case of an unpaired electron, only one of the spin states (either spin up or spin down) will be observed.

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To identify the weakest acid among HF, HCl, HBr, and HI, you should consider their acid strength, which is related to the bond dissociation energy.

The acid strength increases as the bond dissociation energy decreases. In other words, the weaker the bond between the hydrogen atom and the halogen atom, the stronger the acid. The bond strength generally decreases down the periodic table, as the size of the halogen atom increases.

Here are the acids in order:

A) HF
B) HCl
C) HBr
D) HI

Given this trend, the weakest acid is HF (A), as it has the strongest bond between hydrogen and the halogen atom (fluorine).

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Answer:

a= Covalent

b=low melting point

c= ionic

d=conduct electricity when dissolved

Explanation:

It takes approximately 6 half-lives for there to be less than 1% of Uranium-238 left and approximately 5 half-lives for there to be less than 1% of Uranium-235 left.

The concept of half-life is a fundamental aspect of radioactive decay. The half-life of a radioactive substance is the time it takes for half of the initial amount of the substance to decay. After one half-life, 50% of the substance remains, after two half-lives, 25% remains, and so on.

For Uranium-238, which has a very long half-life of about 4.5 billion years, it takes approximately 6 half-lives to reach less than 1% of the initial amount. This means that after each half-life, the amount of Uranium-238 is halved, and after six such halvings, less than 1% is left.

On the other hand, Uranium-235 has a shorter half-life of about 703.8 million years. Thus, it takes approximately 5 half-lives for Uranium-235 to reach less than 1% of the initial amount.

Knowing the number of half-lives required for a substance to reach less than 1% of its initial quantity is important in various scientific and practical applications, particularly in understanding radioactive decay and the behavior of radioactive materials over time.

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Answer:

B and C

Explanation:

is it multiple choice question??

Van der Waals forces are the interaction between the molecules and the atoms. It increases with an increase in the molecular size and the number of electrons. Thus, options B and C are correct.

Van der Waals forces are the weak forces of attraction and repulsion present between the atoms and the molecules of the compounds. They are also called London Dispersion Forces and dipole-dipole forces.

An increase in the number of electrons and size of the molecule increases the surface area and the electron cloud which in turn, increases the Van der Waals force.

The intermolecular force increases as in large atoms or molecules the valence are held loosely as they are far from the nucleus or the center of the atom.

Therefore, the size and the electron increase the Van der Waals force.

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Answer:

C

Explanation:

because 37 does not end with 5 or 0, so it'd be harder to see if the water temperature is accurate if your thermometer goes up by 5s or 10s. And using D, the one that goes up by 20s is out of the question, it'd be too difficult to read. Using a thermometer that goes up by 1s is just best because you can be positive when the water is at 37°C

When accurately a value is measured indicates how near it is to the true value. If, for instance, you measure a substance's density to be 1.24 g/mL, and it has a density of 1.23 g/mL, you were accurate. The variation between the accepted value and the empirically measured value is incredibly tiny.

The mass of a substance per unit of volume is its density. Density is most frequently represented by the symbol, however the Latin letter D may also be used.

The density of a substance is determined by the mass, size, and arrangement of its atoms. Density (D) is defined as the product of a substance's mass and volume. Differing densities apply to objects having the same volume but different masses.

The true or accurate value of a measurement is one that is based on widespread agreement with an authoritative reference. The acceptable density for aluminum is 2.70g/cm3. A measurement's experimental value is its value as it is observed during the experiment.

Thus,The variation between the accepted density and the empirically measured density is incredibly tiny.

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a. The removal of CS2 from the solution will shift the reaction to the right.

b. Reducing the pressure will shift the reaction to the left.

a. CS2 is one of the reactants in the equation. Removing CS2 from the solution will decrease the concentration of reactants, causing the equilibrium to shift in the direction that produces more CS2. Therefore, the reaction will shift to the right to compensate for the removal of CS2.

b. According to Le Chatelier's principle, when the pressure is reduced, the equilibrium will shift in the direction that produces fewer moles of gas. In this reaction, the total number of moles of gas on the left side (CH4, H2S, H2) is greater than on the right side (CS2, H2).

Thus, reducing the pressure will favor the side with fewer moles of gas, causing the reaction to shift to the left.

Please note that without specific equilibrium constants or additional information, it's not possible to determine the exact extent of the shift. The explanations provided are based on general principles and assumptions.

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PhS(O)CH₂Ph is a sulfone compound with a phenyl group attached to the sulfur atom and a benzyl group attached to the carbon atom adjacent to the sulfur atom.

PhS(O)CH₂Ph is a chemical compound with the following components: phenylthio (PhS), a sulfoxide group (O), a methylene bridge (CH₂), and another phenyl group (Ph). This compound consists of a phenylthio group connected to a phenyl group via a methylene bridge and a sulfoxide group in between. It is commonly used as a building block in organic synthesis for the preparation of various pharmaceuticals, agrochemicals, and materials.

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The pressure of the nitrogen gas will be 4.42 atm when the volume is 11.00 L.

(P1 x V1) / T1 = (P2 x V2) / T2

Since the temperature is constant, we can simplify the equation to:

P1 x V1 = P2 x V2

We can then plug in the given values:

P1 = 5.66 atm

V1 = 8.62 L

V2 = 11.00 L

And solve for P2:

P2 = (P1 x V1) / V2

P2 = (5.66 atm x 8.62 L) / 11.00 L

P2 = 4.42 atm

Pressure refers to the amount of force exerted per unit area. It is an important property of gases and can affect their behavior, such as their volume, temperature, and solubility in liquids. Pressure is typically measured in units of pascals (Pa), but other common units include atmospheres (atm), millimeters of mercury (mmHg), and pounds per square inch (psi).

The kinetic theory of gases describes the behavior of gases in terms of their particles, which are in constant random motion and collide with each other and with the walls of their container. The force of these collisions contributes to the pressure of the gas. Increasing the number of gas particles or their speed increases the pressure, while decreasing the volume of the container also increases pressure.

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The average acceleration from the following data points is 20.625 m/s^2.

We know that average acceleration = change in speed / change in time
here,

change in speed = v2-v1

                          = 975-150

                          = 825 m/s

change in time   = t2 - t1

                         = 55 - 15

                         = 40 s

now, putting all the values, average acceleration = 825 / 40

                                                                             = 20.625 m/ s^2 .

what is acceleration?

The rate at which an entity's velocity with regard to time changes is referred to as acceleration in mechanics. They are vector quantities, accelerations. The direction of the net force acting on an object determines the direction of its acceleration.

The SI unit of acceleration is metre per second square (m/s^2).

An average acceleration the speed at which velocity changes, the evolution of velocity through time, or the instantaneous acceleration ( acceleration at a given moment ) .

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