box a and box b have the same density. box a had more volume. which box has more mass?

In the Lewis structure of methanol (CH3OH), the OH group is placed on the outside because it is an important functional group that influences the chemical properties and reactivity of the molecule.

The Lewis structure is a representation of a molecule that shows the arrangement of atoms and valence electrons. In methanol, carbon (C) is the central atom bonded to three hydrogen (H) atoms and one oxygen (O) atom. The oxygen atom forms a single bond with carbon and also has two lone pairs of electrons.

The placement of the OH group (hydroxyl group) on the outside of the Lewis structure is significant because it determines the chemical behavior of methanol. The OH group consists of an oxygen atom bonded to a hydrogen atom and represents the presence of an alcohol functional group.

In organic chemistry, functional groups are specific arrangements of atoms within a molecule that give rise to characteristic chemical reactions and properties. The presence and position of functional groups can greatly influence the behavior and reactivity of a compound. In the case of methanol, the hydroxyl group provides the molecule with its characteristic properties.

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(a) The speed of light in the unknown substance is determined 1.82 x 10⁸ m/s.

(b) The light will bend away from the normal since speed of light in air is not equal to speed of light in the substance.

The speed of light passing from air into the substance is calculated as follows;

refractive index = speed of light in air / speed of light in the substance

speed of light in the substance = speed of light in air/refractive index

speed of light in the substance = (3 x 10⁸) / (1.65)

speed of light in the substance = 1.82 x 10⁸ m/s

Thus, the light will bend away from the normal since speed of light in air is not equal to speed of light in the substance.

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Kc = [ \(Cl^-\)][\(Ag^+\)]/[AgCl] is the equilibrium constant for the given balanced equation AgCl(s) ⇌ \(Ag^+\)(aq) + \(Cl^-\)(aq).

When a chemical process reaches equilibrium, the equilibrium constant (typically indicated by the symbol K) offers information on the relationship among the products and reactants. The equilibrium constant of concentration (denoted by Kc) between a chemical reaction at equilibrium, for example, can be defined as the ratio of product concentration to reactant concentration, each increased to their respective stoichiometric coefficients.

Kc = [product]/[reactant]

Kc = [ \(Cl^-\)][\(Ag^+\)]/[AgCl]

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The location are Solid, reactants, aqueous, liquid, gas.

A strong has a precise form and volume. A liquid has a particular quantity, but takes the shape of its field. A gasoline lacks either a defined form or quantity. Plasma is similar to a gasoline in that its particles are very some distance aside, but a gasoline is electrically neutral and plasma has a rate.

A chemical reaction occurs while one or greater chemical substances are modified into one or greater other chemical compounds. Examples: iron and oxygen combining to make rust. vinegar and baking soda combining to make sodium acetate, carbon dioxide and water.

A strong is a state of be counted that keeps its form and density when now not constrained.

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Approximately 0.09 moles of ammonia (NH3) can be produced from the given conditions.

To determine the number of moles of ammonia (NH3) that can be produced, we need to use the ideal gas law and the balanced chemical equation for the reaction.

The balanced chemical equation for the reaction between hydrogen (H2) and nitrogen (N2) to produce ammonia (NH3) is:

3H2 + N2 -> 2NH3

From the equation, we can see that 3 moles of hydrogen react with 1 mole of nitrogen to produce 2 moles of ammonia.

First, let's convert the given volume of hydrogen to moles using the ideal gas law:

PV = nRT

Where:

P = pressure (in atm)

V = volume (in liters)

n = moles

R = gas constant (0.0821 L·atm/(mol·K))

T = temperature (in Kelvin)

First, we need to convert the temperature from Celsius to Kelvin:

T(K) = T(°C) + 273.15

T(K) = 50.0 + 273.15 = 323.15 K

Using the ideal gas law, we can calculate the number of moles of hydrogen:

n(H2) = PV / RT

n(H2) = (1.2 atm) * (4.0 L) / (0.0821 L·atm/(mol·K) * 323.15 K)

n(H2) ≈ 0.18 moles

Since we have an excess of nitrogen, the amount of nitrogen will not limit the reaction. Therefore, the number of moles of ammonia produced will be half the number of moles of hydrogen:

n(NH3) = 0.5 * n(H2)

n(NH3) ≈ 0.5 * 0.18 moles

n(NH3) ≈ 0.09 moles

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In kinematics, a scalar variable known as the speed of an object is frequently used to express how much its position varies over time or how much it changes per unit of time.

In Newtonian physics, an object's linear momentum, translational momentum, or simply momentum is defined as the product of its mass and velocity. It is a vector quantity since it has both a magnitude and a direction. The formula mathbfp = m mathbfv determines an object's momentum p if it has mass m and velocity v.

The vehicle will travel 300 cm farther while traveling at a high speed than when moving more slowly.

The truck's speed will be reduced by the weight of the 50g of earth it contains since speed is calculated as distance * time. increasing the amount of time needed to travel a distance.

When the truck is empty, however, it will take less time to travel that distance since the weightlessness will increase its speed.

The weight of an object refers to the gravitational force acting on it. Weight is the term used in many widely used textbooks to describe the gravitational force exerted on the object. Weight is sometimes referred to as a scalar quantity that gauges the strength of the gravitational pull.

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Explanation: 5.6g

the molars of FeCl3 is \(\frac{16,25}{56+35,5.3}= 0.1\) (mol)

have:

2Fe + 3Cl2  ⇒ 2FeCl3

 0.1 <=                   0.1

=> the molars of Fe is 0.1 mol

=> the mass of Fe is 0,1.56 = 5.6 (g)

The mass of iron required to make 16.25g of iron chloride is 5.59 g.

A limiting reagent can be defined as a reactant that is fully exhausted from the reaction mixture at the completion of a reaction.

When reactants are not taken in stoichiometric quantities, the limiting reactant will decide the amount of product will be formed in a reaction from the reactants.

Given, a balanced chemical equation of the reaction between iron and chlorine is:

2Fe + 3Cl₂ → 2FeCl₃

Given, the amount of iron chloride = 16.25 g

The molecular mass of the iron chloride = 162.2 g/mol

The number of moles of iron oxide = 16.25/162.2 = 0.10 mol

2 moles of iron chloride produced from iron = 2mol

0.10 mol of iron chloride produced from iron =  0.10 mol

The mass of the iron required = 0.10 × 55.85 = 5.59 g

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The mass of PCl3 needed to completely react with 6.5 g of water is 49.24 g.

To calculate the mass of PCl3 needed to completely react with 6.5 g of water, you need to first calculate the moles of water by using the formula: moles = mass/molar mass. The molar mass of water is 18.015 g/mol, so the moles of water in 6.5 g is 0.360 moles.

Next, you need to determine the ratio of PCl3 to water by looking at the chemical equation for the reaction: PCl3 + H2O → H3PO3. In this equation, one mole of PCl3 is needed to react with one mole of H2O.

So, the ratio of moles of PCl3 to moles of H2O is 1:1. Since there are 0.360 moles of H2O, there will be 0.360 moles of PCl3 required to react with it. The mass of PCl3 can be calculated by using the formula: mass = moles x molar mass.

The molar mass of PCl3 is 137.33 g/mol, so the mass of PCl3 needed to completely react with 6.5 g of water is 49.24 g.

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Answer:

1.25 moles

Explanation:

hope that helps :)

ps. im learning about that in school rn too

Answer: the answer is A

Explanation:

The answer is: "can be crystalline".

To make the information in the table accurate, we need to consider the characteristics of substances and their classification as either crystalline or amorphous. Crystalline substances have a well-defined, repeating three-dimensional arrangement of particles, while amorphous substances lack long-range order.

The blank cell should be filled with "can be crystalline" because crystalline substances can indeed be made of charged particles or neutral particles. Examples include ionic crystals (charged particles) and covalent crystals (neutral particles), both of which exhibit crystalline structures. Amorphous substances, on the other hand, do not have a regular arrangement and can be made of charged or neutral particles as well.

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The appropriate alkyl bromide to be used in the malonic ester synthesis of the given carboxylic acid, CH2CH2COH, is option III, CH3CH2Br.

The malonic ester synthesis is a method used to synthesize carboxylic acids by reacting an alkyl halide (in this case, an alkyl bromide) with diethyl malonate. The alkyl bromide serves as the alkylating agent in the reaction, introducing the desired alkyl group into the malonic ester.

In the given options, option III, CH3CH2Br, corresponds to ethyl bromide. This alkyl bromide can be used to alkylate the diethyl malonate, resulting in the desired carboxylic acid, CH2CH2COOH.

Option I, Br, is not a specific alkyl bromide and does not provide the necessary alkyl group for the synthesis.

Option II, CH CH Br, is a polybrominated compound and not suitable for the malonic ester synthesis.

Option IV is not provided in the question.

Option V is not provided in the question.

Therefore, the correct answer is option III, CH3CH2Br, which is the appropriate alkyl bromide to be used in the malonic ester synthesis of the given carboxylic acid.

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If the reaction between 8.3g of sodium & 4.5g of chlorine produces an actual yield for sodium chloride of 6.4g, so the percent yield becomes 86%.

The ionic compound salt, also known as sodium chloride, has the chemical formula NaCl. Sodium chloride is utilized as electrolytes replenisher to help lessen heat cramps caused over by excessive sweating. This drug is also used to make a standard isotonic sodium chloride solution. It's used as a preservative as well as a spice for enhance flavor. In addition, sodium chloride is used to make polymers and other products.

By using the formulae -

Actual yield divided by theoretical yield multiplied by 100 to get percent yield.

percent yield = 6.4 / 7.4 × 100

percent yield = 86%

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The relative atomic mass (Ar) : 137 and the element : Ba

The naming of chemical compounds is giving a special name to a compound that aims to facilitate the classification of compounds and facilitate the identification of a compound. The rules for naming chemical compounds have been determined by the IUPAC (International Union of Pure and Applied Chemistry)

This nomenclature includes the naming of ion compounds, covalent compounds, and polyatomic

The molar mass of a compound is given by the sum of the relative atomic mass of Ar  

M AxBy = (x.Ar A + y. Ar B)  

Group 2 metals have a +2 charge : M²⁺

So the compound of metal carbonate : MCO₃

Ar C = 12, O = 16

M MCO₃ = (1.Ar M + 1. Ar C+ 3. Ar O)  

\(\tt 197=1. Ar~M+1.12+3.16\\\\197=Ar~M+12+48\\\\Ar~M=137\)

The element with relative atomic masses 137 is Ba

So the compound : BaCO₃

The flaw in Regina’s plan is that the time frame is unrealistic (option B).

Goal setting involves the development of an action plan designed in order to motivate and guide a person or group toward a goal, which is a result that one is attempting to achieve.

Effective goal setting lets you measure progress, overcome procrastination and visualize your dreams. However, setting goals is said to be effective when it is done in an adequate time frame.

According to this question, Regina identifies her goal and hastily writes it down as follows: I will make an A on my English literature term paper that is due next week.

This goal, although is great, is unlikely to be met because of the time frame. One cannot get an excellent result in something that lacks adequate preparation, which includes adequate time.

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In the early 1900's, Paul Drüde came up with the "sea of electrons" metallic bonding theory by modeling metals as a mixture of atomic cores (atomic cores = positive nuclei + inner shell of electrons) and valence electrons. Metallic bonds occur among metal atoms. Whereas ionic bonds join metals to non-metals, metallic bonding joins a bulk of metal atoms. A sheet of aluminum foil and a copper wire are both places where you can see metallic bonding in action.

Metals tend to have high melting points and boiling points suggesting strong bonds between the atoms. Even a soft metal like sodium (melting point 97.8°C) melts at a considerably higher temperature than the element (neon) which precedes it in the Periodic Table. Sodium has the electronic structure 1s22s22p63s1. When sodium atoms come together, the electron in the 3s atomic orbital of one sodium atom shares space with the corresponding electron on a neighboring atom to form a molecular orbital - in much the same sort of way that a covalent bond is formed.

The difference, however, is that each sodium atom is being touched by eight other sodium atoms - and the sharing occurs between the central atom and the 3s orbitals on all of the eight other atoms. Each of these eight is in turn being touched by eight sodium atoms, which in turn are touched by eight atoms - and so on and so on, until you have taken in all the atoms in that lump of sodium. All of the 3s orbitals on all of the atoms overlap to give a vast number of molecular orbitals that extend over the whole piece of metal. There have to be huge numbers of molecular orbitals, of course, because any orbital can only hold two electrons.

The electrons can move freely within these molecular orbitals, and so each electron becomes detached from its parent atom. The electrons are said to be delocalized. The metal is held together by the strong forces of attraction between the positive nuclei and the delocalized electrons Hope this helped

Answer:

Explanation:

9.3 put me as brainliest.

250 grams of Mix A (MxA) should be used to obtain the right diet for one animal.

To determine the number of grams of Mix A (MxA) needed to obtain the right diet for one animal, let's assume that x represents the number of grams of MxA used.

The protein content in MxA is 10%, which means 0.10x grams of protein will be obtained from MxA.

The fat content in MxA is 6%, which means 0.06x grams of fat will be obtained from MxA.

Since the desired diet for one animal should consist of 25 grams of protein and 5 grams of fat, we can set up the following equation based on the protein content:

0.10x = 25

Solving for x:

x = 25 / 0.10

x = 250 grams.

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Answer:

WASSUP BRO

Explanation:

The gases can be converted into liquids by bringing its particles closer so atmospheric either by decreasing temperature or by increasing pressure

Answer:

The gases can be converted into liquids by bringing its particles closer so atmospheric gases can be liquefied either by decreasing temperature or by increasing pressure.

Explanation:

Answer:

Multicellular organisms thus have the competitive advantages of an increase in size without its limitations. They can have longer lifespans as they can continue living when individual cells die. Multicellularity also permits increasing complexity by allowing differentiation of cell types within one organism.

The given reaction is a redox reaction where ammonium phosphate and molybdenum oxide are formed as products, along with water.

In this redox reaction, the reactants HPO4, 3NH4, and 12MoO4 combine to form the products (NH4)3PO4(MoO3)12 and 12H2O. The reaction can be balanced as follows:

3HPO4²⁻ + 9NH4⁺ + 36MoO4²⁻ + 46H⁺ → (NH4)3PO4(MoO3)12 + 12H2O

The reactants undergo oxidation and reduction processes to form the products, ammonium phosphate [(NH4)3PO4] and molybdenum oxide (MoO3)12, along with water (12H2O).

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When current is allowed to flow, the species that gets oxidized depends on the specific conditions of the system. However, based on the given options, the likely species to be oxidized would be A) Cr₂O₇²⁻.

When current flows in a system, oxidation and reduction reactions occur simultaneously at different electrode surfaces. The species that gets oxidized is the one that loses electrons. In the given options, Cr₂O₇²⁻ and MnO⁴ are both polyatomic ions with high positive oxidation states, while Cr³⁺ and Mn²⁺ have lower positive oxidation states. H³⁺ refers to a hydrogen ion, which is not a likely candidate for oxidation in this context.

In the case of Cr₂O₇²⁻, it has a higher positive oxidation state compared to Cr³⁺. Therefore, it is more likely to undergo oxidation and lose electrons when current is allowed to flow. The half-reaction for the oxidation of Cr₂O₇²⁻ to Cr³⁺ can be represented as follows:

Cr₂O₇²⁻ (aq) → 2Cr³⁺ (aq) + 3e⁻

This reaction involves the reduction of another species, which gains the electrons released during the oxidation of Cr₂O₇²⁻. It's important to note that the actual species being oxidized or reduced can vary depending on the specific conditions of the system, such as pH and the presence of other reactants.

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An element is a substance with its own characteristic structure and chemical properties as a result of its unique arrangement of protons, neutrons, and electrons.

An element (also called atomic structural compound), is a particular chemical substance that contains a given amount of subatomic particles, which include protons (positive charge), neutrons, and electrons (negative).

In conclusion, an element is a pure chemical substance with its own characteristic atomic structure and chemical properties as a result of its unique arrangement of protons, neutrons, and electrons.

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Answer:

A

Explanation:

The option A is draw well about sha

Answer:

European stability mechanism

Answer:

Free chlorine involves the amount of chlorine that's able to sanitize contaminants, while combined chlorine refers to chlorine that has combined directly with the contaminants. Total chlorine is basically the sum of free chlorine and combined chlorine.

Answer:

comets

Explanation:

Comets have been called "dirty snowballs." They are small celestial objects, made of ice, gas, dust, and a small amount of organic material, that orbit our Sun. There are about 1000 known comets and more are discovered each year.

Answer:

comets

Explanation:

once they start forming, and flying in space, it goes around the sun.