Match each subatomic particle with the correct descriptions

Answer:Atomic radius gets bigger

Explanation:

Atomic radius bigger because not only do the atoms have more and more protons and neutrons, and thus more mass in general, there is also stronger shielding affect. Shielding affect is when electrons closer to the nucleus block the positive charge from reaching electrons farther from the nucleus, and thus those far electrons are not drawn towards the nucleus as strongly, and spread out more, increasing atomic radius.

Answer:

the periodic table

Explanation:

Elements with similar properties are in columns called groups. Elements to the left of this line are metals. Elements in the same group of the periodic table have the same number of electrons in their outer shell. This gives them similar chemical properties.

Hope this helps!

Answer:

gases have no definite volume and shape

Water has a 1 g/cm3 density. Weight of water in grammes when a bottle is completely filled with that amount of water.

Density bottle volume:

The empty density bottle weighs M1 = 4 kg.

Bottle weight plus water equals 12.5 kg Bottle weight plus water equals 12.5 kg Mass of water filling the density container to the top equals M2 — M1 (12.5—4=8.5 kg).

However, 1 g of water has a volume of 1 cc.

∴ water volume equals 8.5 cubic centimetres, or 8.5 ml, in a density bottle.

Define density.

The ratio between a substance's mass and volume is referred to as its density.

Volume/Mass = Density

The substance's mass per unit of volume is known as its density (volumetric mass density or specific mass). Although the Latin letter D may also be used, the sign most frequently used for density is (the lower case Greek letter rho). Mass divided by volume is the definition of density in mathematics: where is the density, m is the mass, and V is the volume.

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The given molecule has only 1 rhed – region of high electron density because of presence of one triple bond.

An electron density zone might be either bonding or non-bonding. Electrons in a covalent bond between two atoms are counted as one region, whether the link is single, double, or triple (or anything in between). The amount of lone pairs on the core atom is used to count non-bonding areas.

Double and triple bonds qualify as one high electron density region. A single unpaired electron counts as one high electron density region. One can utilize any of the resonance structures for molecules or ions that have resonance structures.

A high electron density atom or group indicates that some component of the molecular structure (such as resonance or inductive effects) is transferring negative charge towards this location in the molecule.

In the given molecule, A – B ≡ C

Only one triple bond is there and no lone pairs of electrons. Hence, only 1 rhed (region of high electron density) is present within the molecule.

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According to the given statement chemical reactions occur when atoms are rearranged in different combinations

The correct option is C.

The fact that Dalton's atomic theory does not break a number of fundamental rules of chemical combination, including the law of definite proportions, the law of multiple proportions, and the law of conservation of mass, is one of its most significant advantages.

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The ideas on atoms proposed by Dalton constitute a theory, while the ideas proposed by Democritus do not because Democritus' theories did not explain chemical behavior and were not supported by experimental findings.

Dalton's theories were scientifically based and did explain chemical behavior; his tests revealed that the ratios in which elements were mixed were whole numbers. Democritus' theories were in line with later scientific theories, but they did not account for chemical activity. Democritus' method was not based on science, so it also lacked experimental support.

 According to the first section of Dalton's theory, all matter is composed of indivisible atoms. According to the second component of the theory, the mass and characteristics of every atom in a specific element are the same. Compounds, according to the third section, are combinations of two or more different kinds of atoms.

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Answer:

the measure of net molecular polarity, which is the magnitude of the charge Q at either end of the molecular dipole times the distance r between the charges.

Explanation:

It is a separation of charge forming a positive and a negative end of a molecule

Answer: 192 over 77 Ir

Explanation:

Iridiums atomic mass is 192.217 and to get 192 you would add both protons and neutrons to get the atomic mass. When writing in isotope notation, the mass goes on top.

The concentration of the acetic acid before titration is 0.1283m

25 ml CH_3 COOH  titrated with [tex]$0.1067 \mathrm{~m}$[/tex][tex]$\mathrm{NaOH}$[/tex] of [tex]$30.07 \mathrm{ml}$[/tex] where solution change colour, meany Equivalence point occurs. where

[tex]$$n_{\text {acid }}=n_{\text {base }}$$[/tex]

[tex]$\Rightarrow m_{\text {acid }} v_{\text {acid }}=m_{\text {base }} v_{\text {base}$[/tex]

[tex]$\left[\mathrm{CH}_3COO\mathrm{H}\right]=\frac{\left[\mathrm{NaOH}\right] \times V_{\mathrm{NaOH}}}{\mathrm{V}_{\mathrm{CHOOH}}}$[/tex]

[tex]$=\frac{(0.1067 \mathrm{~m}) \times(30.07 \mathrm{~ml})}{(25 \mathrm{ml})}$[/tex]

[tex]$=\frac{3.20847}{25} \mathrm{~m}$[/tex]

[tex]$=0.1283 \mathrm{~m}$[/tex]

Acetic acid, which has the molecular formula CH3COOH, is also referred to as ethanoic acid, ethylic acid, vinegar acid, and methane carboxylic acid. As a byproduct of fermentation, acetic acid gives vinegar its distinctive smell. About 4-6% of the acetic acid in vinegar is water.

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Atomic level to explain these differences and similarities are existing or occurring within an atom or atoms

Atomic level is the when photon are incident in the new medium and they are absorbed by the atom or electron and then remitted or converted to internal energy and here firework are colorful and neon are orange and when the electron run to lower energy level then they emit colored light and the neon never run out electrical energy is the sole resource that is consumed

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The best way to dry a liquid with a drying agent is to add it in small batches and observe the solution between each addition. It is also very helpful to swirl the mixture after each batch.

The ideal drying process involves using the least amount of drying agent possible. If too much of the reagent is used, a certain amount of the liquid being dried will be lost as it is adsorbed on the surface of the drying agent. The swirling in between each batch serves to check if enough of it has been added. The drying agent clumps together when it absorbs water, so when all the water has been absorbed, it will swirl free as a powder.

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21.0 g of hydrogen is mixed with 7.0 g of nitrogen then the maximum mass of ammonia that can be produced from this reaction is 8.51gram.

Limiting agent is reactant in a reaction which is in smallest amount, that is totally consumed when a chemical reaction is completed

The balanced reaction is

[tex]N_{2}+3H_{2}\rightleftharpoons 2NH_{3}[/tex]

moles of nitrogen= 7.0÷28=0.25

moles of hydrogen=21.0÷2.016=10.41

To know the limiting reagent we have to divide moles by stoichiometry

0.25÷1=0.25

10.41÷3=3.47

0.25 is lesser than 3.47 so Nitrogen is limiting reagent so reaction will run according this only

1 Moles of nitrogen=2 mole of ammonia

0.25 mole of nitrogen = 2×0.25=0.5 mole of ammonia

mass of ammonia= 0.5mole×Molar mass of ammonia

                             = 0.5×17.031

                                =8.51g

Thus the mass of ammonia formed is 8.51g

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Answer:

Unbalanced forces affect motion of objects by causing them to accelerate, decelerate or change direction.

Eukaryotic cells are organelles with a developed nucleus. Eukaryotic cell contains a structure called cytoskeletal structure which is distinct central organelle that contains the cells genetic material DNA.

There are two type of cells based on the nucleus. If the cell is having a well developed nucleus it is called eukaryotic cells and the cell which have no developed nucleus is called prokaryotic cell.

Eukaryotic cells contains nucleus, cytoplasm, endoplasmic reticulum, lysosomes, mitochondria and ribosomes.

In eukaryotic cells contains a cytoskeletal structure inside cytoplasm consist of fibers, microtubules and filaments which make it strong.

The genetic material DNA is placed inside this cytoskeleton. Cytoskeleton provide perfect shape to the cell and helps to stimulate the cell movement.

Therefore, the special organelle contained in eukaryotic cells which contains the genetic material DNA.

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The correct answer of chemical reaction is option (C) an odor is produced by burning a sugar.

An odor is produced by burning a sugar is a statement which indicates that a chemical reaction has taken place.

A chemical reaction is a manner that leads to the chemical transformation of 1 set of chemical substances to some other. A chemical reaction is a technique in which one or extra materials, also called reactants, are converted to 1 or greater special materials, known as merchandise. substances are both chemical factors or compounds.

A chemical reaction is a system in which reactants react chemically and convert into merchandise by chemical transformation. as an example, breathing we inhale oxygen which reacts with glucose and produces carbon dioxide, water and energy.

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The central atom of the molecule has three electrons on its valence shell.

The valance shell electron pair repulsion theory shows us the number of electron pairs that can be found on the valance shell of the central atom of the molecule. Recall that the shape  of the molecule is determined by the number of electron pairs that can be found on the valance shell of the central atom of the molecule.

Hence, given the fact that the  molecule contains 3 atoms. It has 1 triple bond and 1 single bond, we can be able to conclude that the molecule has three electron pairs on its valance shell.

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The volume of gas that is CO2 generated when 58.0 L of oxygen reacts at STP is 38.67 L.

At STP, Temperature is 0°C and Pressure is 1 atm. So in this condition the one mole of gas will occupy  a volume of 22.4 L.

Since the given equation goes to completion as given in the question, the balanced chemical equation will be:

              CH₃CH₂OH  + 3O₂  ⇒ 2CO₂ + 3H₂O

From this we can calculate the mole ratio O2 to Co2 and that is 3:2.

From this we can find the volume of Co2,

Volume of CO₂ = 58  × ²/₃

Volume of CO₂ = 38.67 L

Hence the volume of gas that is CO2 generated when 58.0 L of oxygen reacts at STP is 38.67 L.

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Answer-

The law of conservation of mass says that matter is not created or destroyed in a closed system. That means if we have a chemical reaction, the amount of each element must be the same in the starting materials and the products.

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The temperature of the ideal gas that must be heated to maintain the pressure is 703.61 K.

We need to know about the ideal gas theory to solve this problem. The ideal gas is assumed that there is no interaction between particles in a gas. It can be determined by the equation

P . V = n . R . T

where P is pressure, V is volume, n is the number of moles gas, R is the ideal gas constant (8.31 J/mol.K) and T is temperature.

From the question above, we know that

The initial condition of the sample is

V1 = 268 cm³

T1 = 18⁰ C = 291 K

P1 = 748 torr

V2 = 648 cm³

P2 = 748 torr

When the initial and final pressure is the same, we can use the ratio of temperature and volume as

V1/T1 = V2/T2

268 / 291 = 648 / T2

T2 = 703.61 K

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Frequency of light that will create photoelectrons with a KE of 1.88 eV is 1.54 × [tex]10^{15}[/tex].

The frequency of a repeating event is the number of occurrences per unit of time. It is also known as temporal frequency to distinguish it from spatial frequency and ordinary frequency to distinguish it from angular frequency.

Frequency is defined as the number of waves that pass through a fixed point in one unit of time; it is also defined as the number of cycles or vibrations that a body in periodic motion goes through in one unit of time. The number of periods or cycles per second is defined as frequency. The hertz is the SI frequency unit (Hz). A hertz is one cycle per second.

Kinetic energy of photoelectrons = Planks constant × frequency - work function

KE =  h ×f - Ф (h = planks constant = 6.62610 × [tex]10^{-34}[/tex]

1.88 + Ф = h × f

1.88 + 4.50 = h × f

f = 1.54 × [tex]10^{15}[/tex]

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Answer:

Carbon trisulfide or tetracarbon trisulfide.

Explanation:

I don't know if this compound actually exists.  The C is carbon and the S is sulfur.  The carbon retains its name and is in first position in the name.  A compound of sulfur is given the nickname "sulfide."  The number of S atoms needs to be identified using the latin prefix "tri."  The number of C atoms is often not identified in chemical naming, based on the irritating assumption that anyone looking at the three sulfurs would be able to determine that 3 carbons are necessary.  But that is often not obvious, as in this case.  So I prefer adding the latin prefix for 4 (tetra-) for the sulfur, to make it tetrasulfur trisulfice.  {Try fitting that into a bottle}.

Answer:

models 1,2,3,4

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The solubility in moles/liter for aluminum hydroxide at 25 degrees Celcius is  2.47×109 M

What is solubility?

The maximum amount of a substance that can be dissolved in a given volume of a solvent at a particular temperature is referred to as the substance's solubility. The solubility of a given solute-solvent combination is a quality that is unique to that combination; yet, the solubility of individual compounds can vary substantially.

Given that,

Temperature= 25 degrees Celcius

Ksp value= 1.0 X 10^-33

Al(OH)3(s) ==> Al3+(aq) + 3OH-(aq)

Ksp = [Al3+][OH-]3

Let x = [Al3+], then [OH-] = 3x

1.3x10-33 = (x)(3x)3

1.3x10-33 = 27x4

x4 = 4.8x10-35

x = 2.5X10-9 M = molar solubility of Al(OH)3

Hence, the answer rounded off to one decimal point since in decimal part .466 digits in 2nd and 3rd place (66) and greater than 50. the previous digit is converted to the next digit (4-5) Even if you want to give the answer up to two decimal points then the digit in 3rd place (6) is greater than (5) so the digit in 2nd decimal place converts to (67) the answer will be 2.47×109.

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Answer:

avg is 85.4678 atomic mass unit

The reaction where electrons are removed from carbon initially present in glucose is the formation of Glyceraldehyde-3-phosphate and Dihydroxyacetone phosphate.

Glycolysis is the process of the formation of glucose into 2 molecules of pyruvate. It is a cellular process, the molecule reduces in carbon number to form pyruvate thus electrons are removed in the fourth step of glycolysis. The reaction is:

Fructose-6-phosphate(6 carbon) →→→ Glyceraldehyde-3- phosphate(3 carbon) +  Dihydroxyacetone phosphate (3 carbon)

This reaction occurs in the presence of the enzyme Fructose bisphosphate aldolase. The reaction generates a reduced electron carrier NAD⁺

Dihydroxyacetone phosphate further reverses into glyceraldehyde-3-phosphate, thus leading to the formation of 2 molecules of pyruvate(a 3-carbon molecule).

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Using Avogadro’s law, the new volume of the gas is found to be 9.11L

Avogadro's law is a gas law that relates the volume of a gas to the amount of gas substance present. According to Avogadro's law, "equivalent volumes of all gases have the same number of molecules at the same temperature and pressure." Avogadro's law asserts that given the same temperature and pressure conditions, similar volumes of different gases contain an equal number of molecules.

Given:

V1 = 3.61L

n1 = 1.75 moles

n2 = 4.42 moles

To find:

V2 = ?

Formula:

V1/V2 = n1/n2

Calculation:

V2 = V1n2/n1

V2 = 3.61 x 4.42 / 1.75

V2 = 9.11L

Result:

The volume of the gas is found to be 9.11L

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1. Physical change

In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed.

2. Chemical change

A chemical change is a change of materials into another, new materials with different properties and one or more than one new substances are formed. It results when a substance combines with another to form a new substance.

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The resulting gas pressure will be 512.08 torr.

By ideal gas law, PV = nRT

P = pressure

V = volume

n = number of mole of gas

R = gas constant

T = temperature

Using ideal gas law, P₁V₁/ T₁ = P₂V₂/ T₂

P₁= 402 torr

V₁ = 7.22 L

T₁ = 60.0°C

P₂ = ?

T₂ = 56° C

V₂ = 5.29 L

Put these values in formula, P₁V₁/ T₁ = P₂V₂/ T₂

P₂ =  P₁V₁T₂/ T₁ V₂

P₂ = 402 torr ×7.22 L ×56° C / 60.0°C ×5.29 L

P₂ = 512.08 torr

Hence, the resulting gas pressure will be 512.08 torr.

The ideal gas equation is formulated as: PV = nRT.

In this equation, P refers to the pressure of the ideal gas, V is the volume of the ideal gas, n is the overall quantity of ideal gas this is measured in terms of moles, R is the universal gas constant, and T is the temperature.

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