According to the particle theory of matter, there is space between the small particles that make up matter. The space between particles differs depending on the state of the matter. Which list ranks the states of matter, according to the spacing between particles, from largest to smallest

a) The collision frequency of dimethyl ether can be calculated using the kinetic theory of gases. The collision frequency is given by the equation:

\(\[\text{{Collision frequency}} = \frac{1}{4} \sqrt{\frac{8 \cdot k \cdot T}{\pi \cdot m}}\]\)

where k is the Boltzmann constant, T is the temperature in Kelvin, and m is the mass of dimethyl ether molecule. Given that the angle-averaged radius of dimethyl ether is 0.25 nm, we can calculate the mass of the molecule using its density or molar mass.

b) To calculate the decomposition rate constant of (CH3)2CO, we need additional information such as the reaction mechanism and reaction conditions. The rate constant for a chemical reaction depends on factors like temperature, activation energy, and the presence of catalysts. Without these details, it is not possible to calculate the decomposition rate constant accurately.

In conclusion, the collision frequency of dimethyl ether at a specific temperature can be calculated using the kinetic theory of gases. However, to calculate the decomposition rate constant of (CH3)2CO, additional information about the reaction conditions and mechanism is needed.

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The amount of zinc metal in grams consumed in the given reaction is 20.27g.

The mass of a substance in a stoichiometric calculation can be proceeded as follows;

According to this question, a sample of zinc metal reacts completely with an excess of hydrochloric acid. The number of moles of the hydrogen gas produced can be calculated thus;

PV = nRT

0.980 × 7.8 = n × 0.0821 × 298

7.644 = 24.47n

n = 0.31 moles.

In the reaction, 1 mole of zinc metal produces 1 mole of hydrogen gas. Hence, 0.31 moles of zinc metal will be required to produce 0.31 moles of hydrogen gas.

mass of Zn = 0.31 mol × 65.38g/mol = 20.27g

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Answer:

Even though plants are rooted in the ground, they still move, exert force, and do work.

Plant cells have very strong cell walls that allow pressure to build up inside of the cell as water is absorbed. This pressure is called turgor.

When turgor pressure is high enough in a cell, the cell walls become firm and as a result, the cell becomes rigid and the plant is able to stand tall and straight.

When a plant does not get enough water, the turgor pressure inside of the cells decreases. A decrease in pressure pushing against the cell wall causes the cells to lose their shape and shrink. This causes the plant to begin to droop or wilt.

When the wilted plant gets enough water, the cells will become rigid again, and the plant will stand firm and straight once again.

Explanation:

Answer:

Electrons have a negative charge and are found in the area of an atom called Outer Shell

Electrons have a negative charge and are found in the area of an atom called electron shells.

The molecular formula of the compound which contains 18.7% lithium, 16.3% carbon, and 65.0% oxygen by mass is calculated to be as  Li₂CO₃.

We have the given details in the question as:

Percentage of oxygen given as= 65.0%

Percentage of lithium given as= 18.7%

Percentage of carbon given as= 16.3%

The gram atoms for the above can be calculated as :

Given Number of gram atoms of C = 16.3/12 = 1.4

Given Number of gram atoms of Li = 18.7/6.94 = 2.7

Given Number of gram atoms of O = 65.0/ 16 = 4.1

The atomic ratio can be formulated as:

Li              :            C          :    O

2.7/1.4      :       1.4/1.4         :   4.1/1.4

    2          :            1           :     3  

Li : C : O = 2 : 1 : 3

The molecular formula can be calculated as Li₂CO₃.

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The property of matter that is conserved in chemical reactions and shown by balanced equations is known as the Law of Conservation of Mass. According to this law, mass can neither be created nor destroyed in a chemical reaction; it can only be transformed from one form to another.For instance, when two substances are combined, they react and form a new substance.

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D. all of the above often forms sedimentary rock.

All of the options listed often contribute to the formation of sedimentary rocks. Sedimentary rocks are formed from the accumulation and consolidation of sediments, which are particles or fragments of pre-existing rocks or organic material.

A. Mud and sand: Sedimentary rocks such as shale, mudstone, and sandstone are primarily composed of compacted and cemented mud and sand particles, respectively. Over time, these particles settle and undergo compaction and lithification processes to form sedimentary rocks.

B. Plant and animal remains: Organic matter, including plant and animal remains, can accumulate in certain environments such as swamps, lakes, and marine environments. Over time, these organic materials may undergo partial decomposition and become incorporated into sediment layers. Under specific conditions, this organic material can be preserved and eventually transformed into coal, oil, or natural gas. These substances can be found in sedimentary rocks such as coal beds or oil shale.

C. Chemicals on the ocean floor: Sedimentary rocks can also form from the precipitation of dissolved chemicals in bodies of water, including the ocean. As water evaporates or becomes oversaturated with certain minerals, these minerals can precipitate and settle on the ocean floor. Over time, these accumulated minerals can compact and form sedimentary rocks such as limestone, gypsum, or rock salt.

Therefore, all of the options mentioned (mud and sand, plant and animal remains, and chemicals on the ocean floor) contribute to the formation of sedimentary rocks through different geological processes.

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Answer:

potential energy

Explanation:

Energy, potential energy, is stored in the covalent bonds holding atoms together in the form of molecules. This is often called chemical energy.

The steps done and develops human skills or builds structures to reduce risk you are doing​ is a. capacity building.

The capacity building is the process of the developing the skill or the strengthening the skills. There are the four steps in the capacity building.

1) Needs the assessment

2) Design

3) Implementation

4) Monitoring

These are process to reduce the risk of what you are doing. The capacity building includes the leadership developments. The capacity budling consist of the training and the mentorships.

Thus the capacity budling is The steps done and develops human skills or builds structures to reduce risk you are doing​

This question is incomplete, the complete question is :

The step done and develops human skills or builds structures to reduce risks you are doing.

a. capacity building

b. training

c. facility constructing

d. skills honing

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Answer:

The answer is

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

volume = 40 mL

density = 0.80 g/mL

The mass is

mass = 40 × 0.8

We have the final answer as

Hope this helps you

Answer:

Explanation: the answer is in the picture

Answer:

Know this

(i) 1mole of a substance contains 6.022 x 10^23atoms

(ii) 1mole of a substance contains 6.022x10^23molecules

Now

1.) 4.5x10²²atoms of Cu x 1mole of Cu/6.022x10²³atoms of Cu

=0.075moles of Cu.

2.) 8.5x10²⁴molecules of N2 x 1mole of N2/6.022x10²³molecules

=14.11moles of N2

3.) 0.025moles of CH4 x 6.022x10²³molecules/1mole of CH4

=1.51x10²²molecules of CH4

4.)1.26moles of Pb x 6.022x10²³atoms/1mole of Pb

=7.59x10²³atoms of Pb

5.) 0.56moles of CO2 x 6.022x10²³molecules/1mole

=3.37x10²³molecules.

That's pretty Much Everything

The ground state electron configuration for a neutral atom of each element Titanium and Vanadium is 1s² , 2s² , 2p⁶ , 3s² , 3p⁶ , 4s² , 3d² and 1s² , 2s² , 2p⁶ , 3s² , 3p⁶ , 4s² , 3d³ respectively.

Electrons are filled in the order of increasing energy i.e.

from,  1s , 2s , 2p , 3s , 3p , 4s and 3d

's' orbital can accommodate 2 electrons

'p' orbital can accommodate 6 electrons

'd' orbital can accommodate 10 electrons

For Titanium, atomic number, z = 22

So, ground state electron configuration for a neutral atom,

1s² , 2s² , 2p⁶ , 3s² , 3p⁶ , 4s² , 3d²

For Vanadium, atomic number, z = 23

So, ground state electron configuration for a neutral atom,

1s² , 2s² , 2p⁶ , 3s² , 3p⁶ , 4s² , 3d³

So, this is the electron configuration of Titanium and Vanadium.

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When diluting a strong acid with water, it is recommended to add the acid to the water and not the other way around. The statement is true.

This is because adding water to the acid can cause a rapid and exothermic reaction, leading to splattering and potential injury.

When the acid is added to the water, the heat generated is absorbed by the water, reducing the potential for splattering. Additionally, adding the acid to water allows for better mixing and reduces the risk of creating concentrated acid pockets that can be dangerous.

Overall, it is important to follow safe laboratory practices when working with acids and to consult with a trained professional if you are unsure about the proper procedures.

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Answer:

I think the answer is A - they used X-ray analysis.

Explanation:

Answer:They used X-ray analysis

Explanation:

It’s in the text

It is highly probable that your unknown compound is a ketone.

Based on the information provided, the most likely identity of your unknown compound is a ketone.

The presence of a carbonyl peak at 1730 cm-1 in the IR spectrum suggests that the compound contains a carbonyl functional group, which is commonly found in ketones.

Additionally, the boiling range of 121-124 oC is consistent with the boiling range of many ketones. Therefore, it is highly probable that your unknown compound is a ketone.

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Answer:

the water is not warm enough for her

Explanation:

Given that

Her preferred temperature = 82°F

Thermometer in water reads = 24°C

Convert the preferred temperature to °C

°C=5/9 (82-32)

°C = 27.8 °C

Hence the water is not warm enough for her

The water is not warm enough for her to swim in.

We have to convert Emma's preferred temperature to °C

°C=  5/9 x (F - 32)

°C=5/9 (82-32)

°C = 27.8

Therefore the temperature is 27.8°C

This means that the temperature of the water is not warm enough for her

to swim in.

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Answer:

N2 + H2 --> 2 NH

Explanation:

You need to add 2 to make it correct

Answer:

the answer is true

Explanation:

as sound travels through the air it creates a disturbance in the particles of the medium

There are 31. 5 moles in 2.00 kg of copper.We only needed the atomic weight to calculate the molar mass.

To calculate the number of moles of copper in 2.00 kg, we need to use the formula: number of moles = mass / molar mass

First, we need to convert the mass of copper from 2.00 kg to 2000 g. Then we can calculate the molarmass of copper using the atomic weight provided, which is 63.5 g/mol. Now we can substitute these values in the formula: number of moles = 2000 g / 63.5 g/mol = 31.5 mol

So there are 31.5 moles of copper in 2.00 kg. It's important to note that the density of copper given (8.90 g/cm3) was not needed to solve this problem, as it relates to the physical size of the copper sample rather than its chemical composition. We only needed the atomic weight to calculate the molar mass.

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The molarity of the 12 mL HCl solution needed to neutralise 20 mL 0.010 M Ca(OH)₂ solution is 0.033 M

2HCl + Ca(OH)₂ —> CaCl₂ + 2H₂O

From the balanced equation above,

The mole ratio of the acid, HCl (nA) = 2

The mole ratio of the base, Ca(OH)₂ (nB) = 1

MaVa / MbVb = nA / nB

(Ma × 12) / (0.01 × 20) = 2

(Ma × 12) / 0.2  = 2

Cross multiply

Ma × 12  = 0.2 × 2

Ma × 12 = 0.4

Divide both side by 12

Ma = 0.4 / 12

Ma = 0.033 M

Thus, the molarity of the HCl solution is 0.033 M

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Considering the chemical and physical properties of elements, the elements can be arranged into groups in the periodic table as follows:

Group 1 to 3 - metals

Group 14 - non-metals, metalloids, and metals

Group 15 to 18 - non-metals

Groups of elements refer to vertical columns or families that contain elements with similar chemical properties.

Each group in the periodic table has distinct properties and trends. For example:

These are just a few examples of the groups in the periodic table, and each group exhibits unique chemical properties and trends.

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An empirical formula represents the simplest ratio of atoms present in a compound. To determine the empirical formula, we need to simplify the given formulas to their simplest ratios.

Let's analyze the options:

A) CH2OHCH2OH: This formula can be simplified to C2H6O2. However, it is not in its simplest ratio, so it is not an empirical formula.

B) H2C204: This formula is already in its simplest ratio, so it is an empirical formula.

C) H2CO3: This formula is also already in its simplest ratio, so it is an empirical formula.

D) CH3COOH: This formula can be simplified to C2H4O2. However, it is not in its simplest ratio, so it is not an empirical formula.

Therefore, the empirical formulas among the given options are B) H2C204 and C) H2CO3.

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Creation of a carboxyl group is essential for a rearrange to take place.

One or even more chemicals, also referred to as reactants, are transformed all into or so other substances, often referred to as product, in a chemical reaction. Materials are composed of chemical compounds or elements.

A chemical reaction occurs when one or more components change into one or more other substances. An illustration of this happens when steel and oxygen combine to make rust. When vino and fizzy coke are combined, sodium chloride, oxide, and liquid are created. burning or exploding objects

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2.50 litres of a 10.0 M solution require the preparation of 25.0 moles of ethylene glycol.

Excellent antifreeze, anti-boil, and anti-corrosive qualities are produced when antifreeze and water are mixed in a 50/50 ratio. The proportion of conventional ethylene glycol to water in severely cold conditions can reach 70% antifreeze, 30% water. The maximum antifreeze to water ratio when using DEX-COOL® is 60/40.

moles = concentration (M) x volume (L)

Given that the desired concentration is 10.0 M and the volume needed is 2.50 L, the setup for calculating the total number of moles of ethylene glycol can be written as:

moles = 10.0 M x 2.50 L

moles = 25.0 mol

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Hope it helps.

If you have any query, feel free to ask.

Answer:

2.2 moles

Explanation:

right on test

Answer: C, 0

Explanation: just a mere guess

Answer:

See below, please.

Explanation:

With water

2Na+2H2O=2NaOH+H2 (gas)

With dilute acids

for example, HCl

2Na+2HCl=2NaCl+H2 (gas)