an ideal gas is allowed to expand from 3.20L to 27.2L at constant temperature. By what factor does the volume increases​

Answer:

reactants

The substance(s) to the left of the arrow in a chemical equation are called reactants. A reactant is a substance that is present at the start of a chemical reaction

Explanation:

product_The substance(s) to the right of the arrow are called products . A product is a substance that is present at the end of a chemical reaction. In the equation above, the zinc and sulfur are the reactants that chemically combine to form the zinc sulfide product.

There is a standard way of writing chemical equations. The reactants are all written on the left-hand side of the equation, with the products on the right-hand side. An arrow points from the reactants to the products to indicate the direction of the reaction:

reactants → products

Reactants

1. The substances used as starting materials and which react with one another are reactants.

2. Example: In this reaction Mg and O2 are reactants.

Products

1. The substances which are formed as a result of reaction are products.

2. Example: In this reaction MgO is a product.

Answer:

A. to absorb as much sunlight as possible.

Explanation:

Because they are in the understory, it's a constant competition for sunlight to perform photosynthesis, so they need wider leaves to capture what is filtered by canopy trees.

Answer:to absorb as much sunlight as possible

Explanation:

When pouring from a stock solution bottle, it is generally recommended to hold onto the bottle by grasping the body of the bottle itself. Here's a detailed explanation: Stability, Spillage Prevention, Accurate Pourin

Stability: Holding the bottle by its body provides better stability and control over the pouring process. The body of the bottle is usually designed to provide a firm grip, allowing you to have better control over the pouring angle and flow rate.

Spillage Prevention: Holding the bottle by its body helps minimize the risk of spilling or tipping the bottle. The body of the bottle is typically wider and more stable compared to the neck or cap. By holding onto the body, you can maintain a better balance and reduce the likelihood of accidental spills.

Accurate Pouring: Holding the bottle by the body allows you to have a clearer view of the pouring spout or opening. This visibility helps ensure that you can accurately aim and control the pouring of the stock solution without splashing or wasting the liquid.

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Answer: C1: sp^2; C2: sp^3

Explanation:

Carbon 1 is sp2 hybridized while Carbon 2 is sp3 hybridized.

Atoms that contain single bonds are sp3 hybridized while atoms that contain double bonds are sp2 hybridized.

The term hybridization as introduced by Linus Pauling is used to explain the idea of mixing atomic orbitals of appropriate energy to obtain hybrid orbitals that are suitable for chemical bonding.

Carbon atoms may be;

In this case, carbon 1 is doubly bonded hence it is sp2 hybridized. Carbon 2 is singly bonded hence it is sp3 hybridized.

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A rigid container holds 2.60 mol of gas at a pressure of 1.00 atm and a temperature of 20.0 °C. The container's volume is 62.4 L.

To find the container's volume, we need to use the ideal gas law which states that PV = nRT where :

P is pressure

V is volume

n is the number of moles of gas

R is the gas constant

T is temperature.

We can rearrange the equation to solve for V as follows : V = (nRT)/P

We are given n = 2.60 mol, P = 1.00 atm, T = 20.0°C = 293 K (remember to convert Celsius to Kelvin by adding 273), and R = 0.0821 L·atm/(mol·K).

Plugging in these values and solving for V, we get :

V = (2.60 mol)(0.0821 L·atm/(mol·K))(293 K)/(1.00 atm) = 62.4 L

Therefore, the container's volume is 62.4 L.

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Answer:

4Fe + 3O2→ 2Fe2O3

Explanation:

Fe + O2 → Fe2O3 is the unbalanced form of chemical reaction.

Balancing the simple molecules first, in this case the O2

Fe + 3O2→ Fe2O3 there are now 6 O atoms on the left, there must also be 6 O atoms on the right.

Fe + 3O2 → 2Fe2O3

Balance the rest of the equation.

4Fe + 3O2→ 2Fe2O3

The ε_b such that only 10% of the Hemoglobin sites are occupied by Oxygen is - 0.55 eV.

The reaction decomposes more as T increases, therefore it is ENDOTHERMIC, meaning it requires energy to form CO and O₂.

Kp for each specie...Kp = CO^2 O2 / (CO2)^2

forT = 1500

Assume 1 atm for CO2, after % dissociation

P-CO2 left = 1*(1-0.048/100)= 0.99952

P-CO formed = 1-0.99952 = 0.00048

P-O2 = (1-0.99952)/2 = 0.00024

so..

Kp = CO^2 O2 / (CO2)^2

Kp = (0.00048^2)(0.00024) / (0.99952^2) = 5.53*10^-11

T = 2500

Assume 1 atm for CO2, after % dissociation

P-CO2 left = 1*(1-17.6/100)= 0.824

P-CO formed = 1-0.824= 0.176

P-O2 = (1-0.176)/2 = 0.088

so..

Kp = CO^2 O2 / (CO2)^2

Kp = (0.176^2)(0.088) / (0.824^2) =0.0040

T = 3000

Assume 1 atm for CO2, after % dissociation

P-CO2 left = 1*(1-54.8/100)= 0.452

P-CO formed = 1-0.452= 0.548

P-O2 = (1-0.452)/2 = 0.274

so..

Kp = CO^2 O2 / (CO2)^2

Kp = (0.548^2)(0.274) / (0.452^2) =0.4027

We want that the part of epsilon are occupied with

εₐ = 0.366 eVε_b = - 0.55 eV

Therefore, the ε_b such that only 10% of the Hemoglobin sites are occupied by Oxygen is - 0.55 eV.

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When an aqueous solution of sodium phosphate (Na3PO4) and calcium chloride (CaCl2) are mixed together, a white precipitate of calcium phosphate (Ca3(PO4)2) forms as a result of a double displacement reaction. The net ionic equation for this reaction is:
2 PO4^3- (aq) + 3 Ca^2+ (aq) → Ca3(PO4)2 (s)
In this equation, the phosphate (PO4^3-) and calcium (Ca^2+) ions from the reactants combine to form the solid precipitate of calcium phosphate, while the sodium and chloride ions remain in the solution as spectator ions.

In this reaction, sodium phosphate (Na3PO4) and calcium chloride (CaCl2) react to form calcium phosphate (Ca3(PO4)2) and sodium chloride (NaCl). The net ionic equation for this reaction is:
3Ca2+ + 2PO43- → Ca3(PO4)2
In this equation, the sodium and chloride ions are spectator ions and do not participate in the reaction. The calcium ions (Ca2+) and phosphate ions (PO43-) combine to form solid calcium phosphate. This solid appears as a white precipitate when the aqueous solutions of sodium phosphate and calcium chloride are mixed together.
Overall, the reaction can be represented as:
3Na3PO4 + 2CaCl2 → Ca3(PO4)2 + 6NaCl
This reaction involves the exchange of ions between two ionic compounds, leading to the formation of a new solid compound. The precipitate forms due to the insolubility of calcium phosphate in water.
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Answer:

Make Recycle Bins Easily Accessible

Ditch Single-Use Waste

Minimise Paper Waste

Designate a Drawer for Scrap Paper

Eco-Friendly Lunches

The amount of concentrated solution needed is (0.286 M)(65 mL) / C M, and the amount of water needed is 65 mL minus the volume of the concentrated solution.

To calculate the molarity of Kool Aid desired, we need to determine the number of moles of Kool Aid powder and sugar in the package. Since the molecular formula for sugar is C12H22O11, we can calculate its molar mass as follows:

Molar mass of C12H22O11 = (12 * 12.01) + (22 * 1.01) + (11 * 16.00)

= 144.12 + 22.22 + 176.00

= 342.34 g/mol

Given that the package contains 4.25 grams of Kool Aid powder, we can calculate the number of moles of Kool Aid powder using its molar mass:

Number of moles of Kool Aid powder = Mass / Molar mass

= 4.25 g / 342.34 g/mol

≈ 0.0124 mol

Similarly, for the sugar, which has a molar mass of 342.34 g/mol, we can calculate the number of moles of sugar using its mass:

Number of moles of sugar = Mass / Molar mass

= 192.00 g / 342.34 g/mol

≈ 0.5612 mol

Now, to calculate the molarity of the desired Kool Aid solution, we need to determine the volume of water. Given that 1.06 quarts is equal to 1 liter, and we have 2.00 quarts of water, we can convert it to liters as follows:

Volume of water = 2.00 quarts * (1.06 liters / 1 quart)

= 2.12 liters

To find the molarity, we use the formula:

Molarity (M) = Number of moles / Volume (in liters)

Molarity of Kool Aid desired = (0.0124 mol + 0.5612 mol) / 2.12 L

≈ 0.286 M

To prepare 65 mL of the desired molarity, we can use dilution calculations. We need to determine the volume of concentrated solution and the volume of water needed.

Let's assume the concentration of the concentrated Kool Aid solution is C M. Using the dilution formula:

(C1)(V1) = (C2)(V2)where C1 is the initial concentration, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume.

Given that C1 = C M and V1 = V mL, and we want to prepare a final volume of 65 mL (V2 = 65 mL) with a final concentration of 0.286 M (C2 = 0.286 M), we can rearrange the formula to solve for the volume of the concentrated solution:

(C M)(V mL) = (0.286 M)(65 mL)

V mL = (0.286 M)(65 mL) / C M

So, the amount of concentrated solution needed is (0.286 M)(65 mL) / C M, and the amount of water needed is 65 mL minus the volume of the concentrated solution.

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Answer:

Solid

Liquid

Gas

Hope this helps :)

- jp524

The sequence of atomic numbers 1, 2, 3, and 4 denotes the periodic table's ordering of following elements.

Series are significant because they offer a possible point of entry. It's possible for a user to merely be aware of the fact that a publication is part of a specific series or to be searching for all publications in that series without being aware of any of the individual titles. The series could potentially be used as a storage and control system.

There are two ways to recognize elements in a series: The elements are in series if there are two and only two connections between them and a single node. When two elements' currents are determined to be similar by KCL at a node, the elements are in series.

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Answer:

Number of atoms = 5.1345 x 10²³

Explanation:

Given:

Mass of sodium = 19.6

Find:

Number of atoms

Computation:

We know that atomic mass of sodium is 22.98

So,

Number of atoms = [Mass of sodium/atomic mass of sodium]Avogadro's number

Number of atoms = [19.6 / 22.98]6.02 x 10²³

Number of atoms = 5.1345 x 10²³

In a molecule, bond angles refer to the angle between the two bonds' path and indicate how molecules are structured. The bond angles related to each electron-domain geometry are given below:Linear: The bond angles for linear electron-domain geometry are 180°.

Trigonal Planar: For trigonal planar electron-domain geometry, the bond angles are 120°.Tetrahedral: The bond angles in a tetrahedral electron-domain geometry are 109.5°.Trigonal Bipyramidal: The bond angles of trigonal bipyramidal electron-domain geometry are 90° and 120°.Octahedral: The bond angles for an octahedral electron-domain geometry are 90° and 180°.The correct options for the bond angles associated with each electron-domain geometry are as follows:Linear: 180°Trigonal Planar: 120°Tetrahedral: 109.5°Trigonal Bipyramidal: 90° and 120°Octahedral: 90° and 180°Therefore, the correct answer to the given question is:Option 1: Trigonal Planar has bond angles of 120°, Tetrahedral has bond angles of 109.5°, Octahedral has bond angles of 90° and 180°, Trigonal Bipyramidal has bond angles of 90° and 120°.

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Answer:

\(\boxed {\boxed {\sf 75 \ radioactive \ nuclei}}\)

Explanation:

Radioactive decay occurs in unstable atom nuclei. The ratio of protons to neutrons is off, causing the instability. The nuclei release particles and radiation to change into different atoms.

The half-life is the time it takes for half of the nuclei to decay. We don't know the half-life of the sample, but we know it undergoes 3 half-lives. Therefore, the number of radioactive nuclei halves every time the sample undergoes a half-life.

We can divide the number of nuclei in half 3 times to find the amount left after 3 half-lives.

After 3 half-lives, 75 radioactive nuclei remain undecayed.

The required correct answer that describes an endothermic reaction is Option E : "At equilibrium, the reactants will predominate and adding a catalyst will ensure a higher yield of products".

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The required correct statement that describes an endothermic reaction is at equilibrium, the reactants will predominate and adding a catalyst will ensure a higher yield of products.

Endothermic reactions are chemical reactions that require energy input from the environment. These reactions absorb heat from the surroundings, causing a decrease in temperature. This means that the temperature of the surrounding environment must be raised to achieve a reaction.What are the characteristics of an endothermic reaction?Endothermic reactions absorb heat from the surroundings. They also have a positive ΔH (enthalpy change) and require energy to proceed. The bonds between the reactants in an endothermic reaction are weaker than the products formed. Therefore, more energy is required to break the bonds of the reactants than to make the products. The endothermic reaction absorbs this energy. The enthalpy of the products is higher than that of the reactants. When energy is added to the reactants, the products' enthalpy increases, and the reaction is endothermic. Therefore, the correct statement that describes an endothermic reaction is:At equilibrium, the reactants will predominate and adding a catalyst will ensure a higher yield of products.

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newton's first law of motion states than an object motion will not change unless subjected to an external force.

7.22 × 10³ grams of magnesium nitrate is equivalent to 4.306 × 10²⁵ molecules.

The number of molecules of a substance can be calculated by multiplying the number of moles in the substance by Avogadro's number as follows;

no of molecules = no of moles × 6.02 × 10²³

According to this question, 7.22 × 10³ grams of magnesium nitrate is given. The number of moles can be calculated as follows;

molar mass of Mg3N2 = 100.9494 g/mol

moles = 7.22 × 10³g ÷ 100.95g/mol = 71.52moles

no of molecules = 71.52 mol × 6.02 × 10²³

no of molecules = 4.306 × 10²⁵ molecules.

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Answer:

c) Electrons are unequally shared

According to Newton, whenever objects A and B interact with each other, they exert forces upon each other. ... These two forces are called action and reaction forces and are the subject of Newton's third law of motion. Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction.

There are total three laws of newtons, first law of newtons, second law of newton and third law of newton. Therefore, action and reaction forces are described by newtons  third law of motion.

Newton's first law is also called law of inertia. An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.

Third law states that for every action there is an equal and opposite reaction. Third law is applicable in many field of physics. The third law is applicable in the running of rockets. The third law is also used by swimmers during swimming in pool.

Therefore, action and reaction forces are described by newtons  third law of motion.

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Answer:

The correct answer is B, "Specific heat capacity of the substance."

Explanation:

I just took the test. I hope this helps!

Heat absorbed changes the bonds of the molecules or the compounds to alter their state. The specific heat capacity affects the amount of heat absorbed. Thus, option B is correct.

Specific heat capacity is defined as the amount of heat or energy absorbed by the kilogram of the solid reactant when the system experiences a rise in temperature. It is measured in J/(kg K) or J/(kg °C).

The specific heat capacity, the mass of the substance, temperature, and the phase of the substance affects the absorption of the heat from the surrounding. The specific heat affects absorption as it tells about the substance's ability to take the heat energy.

Therefore, specific heat capacity affects heat absorption.

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a) The overall charge on the tetrachloridocuprate(II) ion is 2-.

b) The overall charge on the tetraamminedifluoridoplatinum(IV) ion is 4+.

c) The overall charge on the dichloridobis(ethylenediamine)cobalt(III) ion is 3+.



In order to determine the overall charge on each complex ion, we need to look at the oxidation state of the central metal ion and the charges of the ligands surrounding it.

a) In tetrachloridocuprate(II) ion, the central metal ion is copper, which has an oxidation state of +2. The four chloride ligands surrounding the copper ion each have a charge of -1, resulting in a total charge of -4 for the ligands. Therefore, the overall charge on the complex ion is 2- (2+ - 4 = 2-).

b) In tetraamminedifluoridoplatinum(IV) ion, the central metal ion is platinum, which has an oxidation state of +4. The four ammine ligands surrounding the platinum ion each have a neutral charge, while the two fluoride ligands each have a charge of -1. Therefore, the overall charge on the complex ion is 4+ (4+ - 2 = 4+).

c) In dichloridobis(ethylenediamine)cobalt(III) ion, the central metal ion is cobalt, which has an oxidation state of +3. The two ethylenediamine ligands each have a neutral charge, while the two chloride ligands each have a charge of -1. Therefore, the overall charge on the complex ion is 3+ (3+ - 2 = 3+).

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The new concentration of the solution can be obtained as  0.0147 M.

Based on the original concentration and the dilution factor, the dilution formula is used to determine the concentration of a solution after dilution. The final volume to beginning volume ratio is known as the dilution factor.

The dilution equation is

C1V1 = C2V2

where C1 is the solution's initial concentration, V1 is its initial volume, C2 is its final concentration, and V2 is the solution's final volume following dilution.

By the use of the dilution formula;

0.1176 * 30 = x * 240

x = 0.0147 M

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Answer:

Explanatthe tryposphereion:

Answer:

\(\boxed {\boxed {\sf \rho= 0.1 \ g/cm^3 }}\)

Explanation:

Density is found by dividing the mass by the volume.

\(\rho=\frac{m}{v}\)

The mass is 50 grams, but we have to find the volume.

Assuming this is a solid rectangular object, we can use this formula for volume:

\(v=l*w*h\)

The length is 25 centimeters, the width is 10 centimeters, and the height is 2 centimeters.

\(v= 25 \ cm * 10 \ cm * 2 \ cm\)

\(v= 250 \ cm^2 * 2 \ cm\)

\(v= 500 \ cm^3\)

Now we know the mass and volume:

\(m= 50 \ g\\v= 500 \ cm^3\)

Substitute the values into the formula.

\(\rho = \frac{50 \ g}{500 \ cm^3}\)

\(\rho= 0.1 \ g/cm^3\)

The density of the object is 0.1 grams per cubic centimeter.

Elodea leaf was the subject of a test by Ms. Sanchez. Using a light source and oxygen gas, she conducted an experiment in which she counted the number of bubbles emitted by an elodea leaf.

Elodea plants transfer the created oxygen from leaves to stem during photosynthesis. A small amount of oxygen escapes from the leaves to generate oxygen bubbles in the water, but the majority of oxygen leaves the stem because the intracellular air spaces in the stem are greater.

The oxygen that surges up from an underwater plant's leaves. Plants create food and oxygen from carbon dioxide and water through a process known as photosynthesis.

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Answer:

changes that dont result in the formation of new substance with new properties.