Why do gas molecules move at different speeds at a given temperature?

The  name of the organic compound with structural formula of nine carbons and sixteen hydrogens  depends on different factors

The nomenclature of the organic molecule comprising nine carbons and sixteen hydrogens is determined by the arrangement of its atoms as well as the nature of the chemical bonds linking them together. Cyclononane is a circular formation of nine carbon atoms.

An organic substance belongs to a group of chemicals that have carbon atoms linked to each other and other atoms through covalent bonds, and are present in the biological cells. Organic compounds contain usual elements such as carbon, as well as hydrogen, oxygen, and nitrogen.

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Answer:

0.083 M

Explanation:

We'll begin by calculating the number of mole in 0.43 g of KHP (potassium hydrogen phthalate, C₈H₅O₄K). This is can be obtained as follow:

Mass of C₈H₅O₄K = 0.43 g

Molar mass of C₈H₅O₄K = (8×12) + (5×1) + (16× 4) + 39

= 96 + 5 + 64 + 39 = 204 g/mol

Mole of C₈H₅O₄K =?

Mole = mass / molar mass

Mole of C₈H₅O₄K = 0.43 / 204

Mole of C₈H₅O₄K = 0.002 mole

Next, we shall determine the number of mole of NaOH required to react with 0.43 g (i.e 0.002 mole) of KHP. This can be obtained as follow:

C₈H₅O₄K + NaOH → C₈H₄O₄KNa + H₂O

From the balanced equation above,

1 mole of KHP reacted with 1 mole of NaOH.

Therefore, 0.002 mole of KHP will also react with 0.002 mole of NaOH.

Next, we shall convert 24.11 cm³ to L. This can be obtained as follow:

1000 cm³ = 1 L

Therefore,

24.11 cm³ = 24.11 cm³ × 1 L / 1000 cm³

24.11 cm³ = 0.02411 L

Finally, we shall determine the molarity of NaOH. This can be obtained as follow:

Mole of NaOH = 0.00 2 mole

Volume = 0.02411 L

Molarity of NaOH =?

Molarity = mole /Volume

Molarity of NaOH = 0.002 / 0.02411

Molarity of NaOH = 0.083 M

Which statement describes how the binary ionic compound KBr is named? The metal is named first, and the name is unchanged. Which of these is a property of a substance that is composed of atoms that are held together by ionic bonds?

B. The metal is named first and the name is unchanged.

Answer:

285 kJ

Explanation:

potential energy

= m g h

= 95,000 g × 10 m/s² × 300 meters

= 95 kg × 10 m/s² × 300 meters

= 950 kgm/s² × 300 meters

= 285,000 J

= 285 kJ

The volume occupied by the 0.75 mole of the gas at 295 K and a pressure of 1.5 atm is 12.11 L

From the question given above, the following data were obtained:

Ideal gas equation is written as shown below:

PV = nRT

When we input the given parameters, the volume occupied is obatined as:

1.5 × V = 0.75 × 0.0821 × 295

Divide both sides by 4.31

V = (0.75 × 0.0821 × 295) / 1.5

V = 12.11 L

Thus, from the above calculation, we can say that the volume occupied by the gas is 12.11 L

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Answer:

Below

Explanation:

Let n be the quantity of matter in the Calcium Bromide

● n = m/ M

M is the atomic weight and m is the mass

M of CaBr2 is the sum of the atomic wieght of its components (2 Bromes atoms and 1 calcium atom)

M = 40.1 + 2×79.9

● 0.422 = m/ (40.1+2×79.9)

●0.422 = m/ 199.9

● m = 0.422 × 199.9

● m = 84.35 g wich is 88.4 g approximatively

88.4 g approximatively is  the mass in grams of 0.442 moles of calcium bromide, CaBr2 ,therefore option (d) is correct.

Mass is the amount of matter that a body possesses. Mass is usually measured in grams (g) or kilograms (kg) .

To calculate mass in grams of 0.442 moles of calcium bromide, CaBr2,

Let n be the quantity of matter in the Calcium Bromide

M is the atomic weight and m is the mass

M of CaBr2 is the sum of the atomic weight of its components

Mass of  Ca = 40.1 , Mass of Br = 79.9

M = 40.1 + 2×79.9

  0.422 = m/ (40.1+2×79.9)

  0.422 = m/ 199.9

  m = 0.422 × 199.9

  m = 84.35 g which is 88.4 g approximatively .

Thus ,88.4 g approximatively is  the mass in grams of 0.442 moles of calcium bromide, CaBr2 , hence option (d) is correct .

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When the soil is saturated in a gently sloping area, any additional rainfall in the area will most likely become surface run off.

Super saturation occurs with a chemical solution when the concentration of a solute exceeds the concentration specified by the value equilibrium solubility.

Additional water into the soil will cause the soil to be super saturated and eventually runs off due to the steepness of the area.

Thus, when the soil is saturated in a gently sloping area, any additional rainfall in the area will most likely become surface run off.

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Uranium-238

The process by which an atomic nucleus looses energy by radiation is known as radioactivity.

An alpha particle, have an atomic number of 2 and a mass number of 4 as shown;

When this is combined with Th-234, it forms Uranium-238. This shows that the uranium nucleus emits alpha particle to form Th-234 according to the chemical equation below;

Answer:

Explanation:

no becuase everything goes in the mass shouldn't change unless you put extra

Approximately 4.37 x 10^23 molecules of HCl would be required to form 34.52 g of MgCl₂.

To determine the number of molecules of HCl required to form 34.52 g of MgCl₂, we need to use the molar mass and stoichiometry of the balanced equation:

Mg(OH)₂(s) + 2 HCl(aq) → 2 H₂O(l) + MgCl₂(aq)

The molar mass of MgCl₂ is 95.21 g/mol.

First, we need to calculate the number of moles of MgCl₂ formed:

Moles of MgCl₂ = mass of MgCl₂ / molar mass of MgCl₂

Moles of MgCl₂ = 34.52 g / 95.21 g/mol

Moles of MgCl₂ = 0.363 mol

According to the balanced equation, the stoichiometric ratio between HCl and MgCl₂ is 2:1. Therefore, the moles of HCl required can be calculated as follows:

Moles of HCl = 2 * Moles of MgCl₂

Moles of HCl = 2 * 0.363 mol

Moles of HCl = 0.726 mol

To calculate the number of molecules, we need to use Avogadro's number, which is approximately 6.022 x 10^23 molecules/mol.

Number of molecules of HCl = Moles of HCl * Avogadro's number

Number of molecules of HCl = 0.726 mol * 6.022 x 10^23 molecules/mol

Number of molecules of HCl = 4.37 x 10^23 molecules

Therefore, approximately 4.37 x 10^23 molecules of HCl would be required to form 34.52 g of MgCl₂.

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Explanation:

To find ΔrH for the combustion of naphthalene, we can use the equation: ΔrH = qp / n

where qp is the heat absorbed by the bomb calorimeter and n is the number of moles of naphthalene.

First, we need to find qp. We can use the formula: qp = mcΔT

where m is the mass of naphthalene, c is the specific heat capacity of the calorimeter, and ΔT is the change in temperature.

Given that m = 1.312 g, c = 4.184 J/g°C, and ΔT = 30.188 - 24.710 = 5.478 °C

qp = (1.312 g)(4.184 J/g°C)(5.478 °C) = 27.948 J

Next, we need to convert the mass of naphthalene to moles. We can use the molar mass of naphthalene, which is 128.17 g/mol

n = m / M = 1.312 g / 128.17 g/mol = 0.0103 mol

Finally, we can use the equation ΔrH = qp / n to find ΔrH:

ΔrH = qp / n = 27.948 J / 0.0103 mol = 2713.8 J/mol

Therefore, the ΔrH for the combustion of naphthalene at 298 K is 2713.8 J/mol.

In addition to the 4Ps of marketing, it is also important to consider the sustainability, ethics and social responsibility in the twenty-first century marketplace when launching a campaign. It is important to consider the impact the product, service or campaign has on the environment and the society, how it is produced and how it is marketed to the public. Additionally, understanding the target audience, their demographics and what they value is important to create an effective marketing campaign.

Answer: H2o

Explanation:

because oxygen is in the air

During a baseball game, the sound of the bat hitting the ball can be heard in most parts of the stadium. That sound is weaker at greater distances. The cause of this phenomenon is inverse-square law.

Sound is a physical disturbance from an equilibrium condition that travels via an elastoplastic medium. A completely subjective definition of sound, as perceived by the ear, is also viable, but it is not especially informative and is overly limited, because it is important to speak of noises which can be heard by the auditory system, such as those produced by dog whistles or sonar technology.

The inverse-square law, that states that the strength of a sound wave is inversely related to the square of the distance to the source, is the cause of this phenomena. The strength of such sound wave reduces as the distance to the source rises.

Therefore,  the cause of this phenomenon is inverse-square law.

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Answer:

The answer is Phospholipids.

Explanation:

A phospholipid bilayer. Phospholipids spontaneously form stable bilayers, with their polar head groups exposed to water and their hydrophobic tails buried in the interior of the membrane.

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Dark, choppy, dynamic contrasts the following is the best description of the music Mussorgsky wrote to accompany the Gnome.

The composer Modest Mussorgsky is known for creating unique Russian music such as Night on Bald Mountain Pictures at an Exhibition, and the opera Boris Godunov. Mussorgsky is famous for his operas and songs. He discovered a new spelling of the voice that is highly melodic and yet also corresponds to the Russian language. His most famous opera is Boris Godunov.

He wrote the overture Night on the Mountain. Modest Petrovich Mussorgsky 1839-1881 was one of five Russian composers known as the Mighty Fists for their nationalist tendencies. Mussorgsky was one of music's greatest originals. Everything he composed was conceived in relation to the natural rhythms, melodies, and harmonies of Slavic folk music. Art songs by contrast are intended for performance by professional singers or at least carefully trained singers usually accompanied by a piano or instrumental ensemble.

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Answer: c????????

Explanation:

To determine the concentration of vinegar (acetic acid) based on the titration with sodium hydroxide, we need to use the concept of stoichiometry and the volume and concentration of the sodium hydroxide solution.

Let's assume that each drop of the sodium hydroxide solution is approximately 0.03 mL. Based on this assumption, the volume of sodium hydroxide solution used would be:

Volume of NaOH = 43 drops × 0.03 mL/drop = 1.29 mL

Now, we need to determine the moles of sodium hydroxide used in the titration. Using the volume and concentration of the sodium hydroxide solution:

Moles of NaOH = Volume of NaOH (L) × Concentration of NaOH (mol/L)

             = 1.29 mL × (1 L / 1000 mL) × 0.600 mol/L

             = 0.000774 mol

Since acetic acid (CH3COOH) and sodium hydroxide (NaOH) react in a 1:1 molar ratio, the moles of acetic acid present in the vinegar can be determined as well:

Moles of CH3COOH = Moles of NaOH = 0.000774 mol

Finally, we need to calculate the concentration of acetic acid (vinegar) in the solution. Assuming the volume of vinegar is 1 L:

Concentration of CH3COOH = Moles of CH3COOH / Volume of CH3COOH

                      = 0.000774 mol / 1 L

                      = 0.000774 M

Therefore, the concentration of the vinegar (acetic acid) is approximately 0.000774 M.

Answer:

The plant cell has a cell wall, chloroplasts, plastids, and a central vacuole—structures not found in animal cells.

Explanation:

that is my answer

Answer:

C3H7O + O2 → CO2 + H2O

Explanation:

a) The full symbol equation for the oxidation reaction of an isomer of C3H7O can be represented as:

C3H7O + O2 → CO2 + H2O

b) The proper reagent for this oxidation reaction is O2 (oxygen gas). The catalyst required for this reaction depends on the specific conditions. Common catalysts used for oxidation reactions include transition metals such as platinum (Pt), palladium (Pd), or copper (Cu).

c) There is no need to remove the product (CO2 and H2O) from the reaction vessel because they are typically in the gas or liquid phase and do not significantly interfere with the reaction. The product gases can be easily vented out of the vessel, while the liquid water can be left in the reaction mixture. Additionally, the product CO2 is a stable and inert gas, which does not pose any hazards in most cases. Therefore, it is often not necessary to remove the products after the reaction is complete.

The actual iupac name for the chemical compounds is 6,6-diethyl-5-hexen-4-ol. The International Union of Pure and Applied Chemistry is a worldwide association of National Adhering Organizations.

Striving to establish vocabulary and nomenclature in order to enhance the chemical sciences. The organisation belongs to the International Science Council (ISC). Chemical compounds are made up of numerous similar molecules (or molecular entities) that contain atoms from multiple chemical elements and are joined by chemical bonds. Therefore, a molecule made up of atoms from only one element is not a compound. Multiple types of atoms are joined together by chemical bonds to form compounds. Compounds can become simpler substances as a result of chemical processes. Water (H2O) and table salt are examples of compounds (NaCl).

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\(\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}\)

The mas.s of evaporating dish is 21.345g B.

Answer:

\(16\ \text{ppm}\)

Explanation:

Mass of one tablet = 20 mg

Mass of two tablets = \(2\times 20=40\ \text{mg}\)

Percent that is soluble in water = 40%

Mass of tablet that is soluble in water = \(0.4\times 40=16\ \text{mg}\)

So, mass of solute is \(16\ \text{mg}\)

Density of water = 1 kg/L

Volume of water = 1 L

So, mass of 1 L of water is \(1\times 1=1\ \text{kg}=1000\ \text{g}\)

PPM is given by

\(\dfrac{\text{Mass of solute}}{\text{Mass of solvent}}\times 10^6=\dfrac{16\times 10^{-3}}{1000}\times 10^6\\ =16\ \text{ppm}\)

Hence, the concentration of iodine in the treated water \(16\ \text{ppm}\).

Answer: This would be C.) 70%

Explanation:

Answer:

0.25 of the original

Explanation:

(0.5)^(90/45)

The fraction of iron-59 after 90 days is 0.25.

Iron-59 decays following first-order kinetics. Given the half-life (\(t_{1/2}\)) of 45 days, we can calculate the rate constant (k) using the following expression.

\(k = \frac{ln2}{t_{1/2}} =\frac{ln2}{45day} = 0.015 d^{-1}\)

For first-order kinetics, we can find the fraction of Fe ([Fe]/[Fe]₀) after and an elapsed time (t) of 90 days, using the following equation.

\(\frac{[Fe]}{[Fe]_0} =e^{-k \times t } = e^{-0.015 d^{-1} \times 90 d } \approx 0,25\)

The fraction of iron-59 after 90 days is 0.25.

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In terms of oxidation number, oxidation can be defined as the chemical change in which there occurs an increase in the oxidation number of an atom. Reduction may be defined as a chemical change in which there occurs a decrease in the oxidation number of an atom. The correct option is D.

An oxidizing agent is a substance which suffers a decrease in the oxidation number of one or more of its elements and a reducing agent is a substance which suffers an increase in the oxidation number of one or more of its elements.

In the reaction, oxidation state of 'Ca' increases from 0 to +2, so calcium is oxidized and acts as a reducing agent.

Thus the correct option is D.

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Answer: The answer is incus

Answer:

7.92gml-1

Explanation:

water=25.20ml

water+iron=25.92ml

iron=5.7g

P=mass/volume (formula of density)

mass=5.7g

volume=25.92-25.20

=0.72ml

p=5.7/0.72

=7.92gml-1

Given:

Initial volume of water = 25.20mL

Volume of water after iron is added = 25.92mL

Mass of iron = 5.7g

So, the volume of iron = 25.92mL - 25.20mL = 0.72mL

∴ Density of iron will be

Density = Mass/Volume

Density = 5.7g / 0.72mL

Density = 7.91 g/mL

The density of a substance is the relationship between its mass and how much space it takes up. Density equals the mass of the substance divided by its volume, D = m/v.

Though SI unit of density is kg/m³ solids, g/ml for liquids and g/L for gases.

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Answer:

How do amoeba respire.

How do plants respire.