_____ and neutrons are located in the center of the
atom.

I will mark you as brain-

a. False. In the same OSM (Operating System Memory), it is not necessary for all pages to have the same size. Different pages can have varying sizes depending on the memory allocation requirements of the system.

b. False. In the same OSM, all segments do not need to have the same size.

Segments can have different sizes based on the specific needs of the programs or processes running in the system.

Segmentation allows for flexible memory allocation by dividing the memory into logical segments.

c. True. Internal fragmentation occurs when memory is divided into smaller areas to accommodate smaller data blocks, but the remaining memory within each block is too small to be utilized for another block.

As a result, these small unused portions of memory remain empty, leading to inefficient memory utilization.

This is a disadvantage of the paging architecture employed in a computer's memory management system. It can result in wasted memory space and lower overall system performance.

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12M HNO3

Explanation:

A 600-ml solution of 16M nitric acid contains

16M HNO3 × 0.6 L = 9.6 m HNO3

so by increasing the volume by 200 ml the molarity of the solution becomes

Molarity = (9.6 mol HNO3)/(0.800 L)

= 12M HNO3

Answer:

c

Explanation:

it must absorb electrical energy

Answer:

Answer:

C. The dissolving reaction of A was exothermic and the dissolving of reaction B was endothermic

Explanation:

Here is stuff to help you:

Hope this helps! Please let me know if you need more help, or if you think my answer is incorrect. Brainliest would be MUCH appreciated. Have a great day!

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Answer:

functional group

Explanation:

The number of half lives necessary for a given number of nuclei to decay to a specific proportion of their initial number depends on the nuclei's rate of decay. In this instance, the original number of nuclei is indicated to be 6.02x1023, while the percentage of decay is given to be 6.25%, or 0.376x1023.

We may use the equation N(t) = N_0*(1/2)t, where N(t) is the amount of nuclei at time t, N_0 is the starting quantity of nuclei, and t is the number of half lives, to calculate the necessary number of half lives.

We may solve for t by rearranging this equation, giving us t = log_2(N_0/N(t)). Using the supplied numbers as inputs, we obtain t = log_2(6.02x1023/0.376x1023), which is abbreviated to t = 5.7. As a result, it would require 5.7 half.

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The heat released in each reaction is:

Reaction 1: 3700J

Reaction 2: 3200J

What is heat?

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The macromolecule that exists with a backbone where the functional groups are the amine and the carboxylic acid is a polypeptide.

The macromolecule that contains sugar, phosphate group and nitrogenous base is a nucleic acid, specifically DNA or RNA. A nitrogenous base is a nitrogen-containing compound that plays a critical role in the structure and function of nucleic acids such as DNA and RNA. As in carboxylic acid and in DNA, the nitrogenous bases are adenine (A), thymine (T), cytosine (C), and guanine (G) and they form the base pairs that hold the two strands of DNA together. Adenine pairs with thymine (A-T) while guanine pairs with cytosine (G-C). These base pairs are held together by hydrogen bonds, which are relatively weak chemical bonds, but they provide the stability that is needed for the double helix structure of DNA. In RNA, the nitrogenous bases are adenine, cytosine, guanine, and uracil (U) instead of thymine. Uracil pairs with adenine (U-A) and the other base pairs are the same as in DNA. The nitrogenous bases in RNA play a critical role in the genetic code, as the sequence of bases in the RNA molecule determines the sequence of amino acids in a protein. In addition to their role in nucleic acids, nitrogenous bases are also found in other biomolecules such as ATP, NAD and coenzyme A, which are all important for cellular metabolism.

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The major product formed when hydrogen chloride reacts with 2−methyl−2−butene proceeds through a tertiary carbo cation intermediate.

An addition reaction occurs when 2 methyl 2 butene and hydrogen chloride are combined. The Markovnickov rule states that the carbon atom with the fewest hydrogen atoms receives the negative part of the addition. As a result, carbon 2 will be increased by the addendum's negative portion.

The carbocation will be carbon-2 as indicated in the figure that is linked to this answer since this reaction proceeds through an ionic mechanism. This carbon atom is the one to which chlorine will finally bond.

A chemical compound known as hydrogen chloride (HCl) contains a polar covalent bond between chlorine and hydrogen atoms.

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Answer:

Anything that occupies space and has mass is matter but the matter that has specific composition and chemical characteristics is substance

Answer:

Substance: Something that has only 1 atom, for example; Water.

Matter: Made up of more than 1 atom, example; Humans

Explanation:

As said a substance is something that has only 1 atom like water or tin.

Matter is well almost everything in the universe, there's a reason some people say; This is Human Matter. I'm pretty sure it's somewhere in the bible too.

If you were to search it up the other persons answer would come up

One cubic centimeter of 7.15 g/cm³ will contain 9.2 x 10²² Cr atoms.

The density of Cr is 7.15 g/cm³.

It means, one cm³ contains 7.15 grams of Cr.

We know moles are given by,

n = mass/molar mass

n = number of atom/Avogadro number

Molar mass of Cr is 51 g/mol.

So, the number of atoms per cubic centimeter can be found as,

7.15/51 = Number of atom/6.603 x 10²³

Number of atoms = 9.2 x 10²²

So, one cubic centimeter will contain 9.2 x 10²² atoms of Cr.

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During the formation of a coordination compound, ligands act as:

A) Lewis bases.

Ligands are molecules or ions that bind to a central metal ion or atom in a coordination complex. They typically have one or more lone pairs of electrons available for donation. In this context, ligands are considered Lewis bases because they donate electron pairs to the central metal ion or atom. The central metal ion or atom, in turn, acts as a Lewis acid by accepting electron pairs from the ligands to form coordination bonds.

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The compound with ionic bonding is LiBr (b), which consists of a lithium ion (Li⁺) and a bromide ion (Br⁻) held together by electrostatic attraction.

Ionic bonding occurs between a metal and a non-metal, where the metal loses one or more electrons to become a cation (positively charged ion) and the non-metal gains one or more electrons to become an anion (negatively charged ion). The resulting oppositely charged ions are held together by electrostatic attraction, forming an ionic compound.

In the case of LiBr, lithium (Li) is a metal that easily loses one electron to form a Li⁺ ion, while bromine (Br) is a non-metal that readily gains one electron to form a Br⁻ ion. The resulting Li⁺ and Br⁻ ions are strongly attracted to each other by their opposite charges, forming the ionic compound LiBr.

In contrast, compounds such as S (a), H₂O (c), Na (d), and He (e) do not have ionic bonding. S and Na are both elements and do not form ionic compounds with themselves. H₂O is a covalent compound that shares electrons between its atoms, while He is a noble gas that exists as a single atom and does not form chemical bonds with other atoms.

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The temperature that must be maintained on 0.500 mole of the gas in order to maintain the pressure is 21.76 °C

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

Using the ideal gas equation, we can obtain the temperature as follow:

PV = nRT

1.21 × 10 = 0.500 × 0.0821 × T

12.1 = 0.04105 × T

Divide both sides by 0.04105

T = 12.1 / 0.04105

T = 294.76 K

Subtract 273 to obtain answer in °C

T = 294.76 - 273 K

T = 21.76 °C

Thus, the temperature needed is 21.76 °C

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An exothermic reaction releases energy in the form of heat, light or sound, whereas an endothermic reaction absorbs energy from its surroundings. In other words, exothermic reactions release heat and endothermic reactions absorb heat. Exothermic reactions are characterized by a negative change in enthalpy, while endothermic reactions have a positive change in enthalpy. An example of an exothermic reaction is the combustion of a fuel, while an example of an endothermic reaction is the process of melting ice.
The difference between exothermic and endothermic reactions lies in the energy changes. In an exothermic reaction, energy is released to the surroundings, typically in the form of heat. Conversely, in an endothermic reaction, energy is absorbed from the surroundings, usually as heat.Exothermic and endothermic are two terms used to describe the direction of heat flow in a chemical or physical process.

Exothermic processes release heat into the surrounding environment, while endothermic processes absorb heat from the environment.An exothermic reaction is a chemical reaction that releases heat into the surrounding environment, typically in the form of light or heat energy. This type of reaction is characterized by a negative enthalpy change, meaning that the products of the reaction have less energy than the reactants. Examples of exothermic reactions include combustion reactions, such as burning of fuels like wood, coal or gas, and oxidation of metals, such as rusting of iron.

In contrast, an endothermic reaction is a chemical reaction that absorbs heat from the surrounding environment, typically causing the reaction mixture to feel colder. This type of reaction is characterized by a positive enthalpy change, meaning that the products of the reaction have more energy than the reactants. Examples of endothermic reactions include the melting of ice, the evaporation of water, and the reaction between citric acid and baking soda in a cold pack.Similarly, physical processes can also be exothermic or endothermic. For example, the process of condensation of water vapor into liquid water releases heat, making it an exothermic process. On the other hand, the process of melting of ice absorbs heat, making it an endothermic process.

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Answer:

A) 2.2 mol

Explanation:

Given data:

Number of moles of O₂ produced = ?

Number of moles of N₂O₅ decomposed = 4.3 mol

Solution:

Chemical equation:

2N₂O₅    →   4NO₂ + O₂

Now we will compare the moles of N₂O₅ and O₂.

            N₂O₅       :        O₂

             2            :         1

            4.3         :       1/2×4.3 = ×2.2

Thus, from 4.3 moles of  N₂O₅ 2.2 moles of O₂ are produced.

Answer:

D.Ag is most conductive, Sn is intermediate in conductivity, S is least conductive.

Sorry if this is late, hope this helps for anyone viewing!

The standard reduction potential for the half-reaction M3+(aq) + 3e- → M(s) can be determined by subtracting the standard reduction potential of the half-reaction Ag+(aq) + e- → Ag(s) from the overall reaction's standard potential.

Given:

E°(overall reaction) = +2.46 V (from the balanced equation)

E°(Ag+(aq) + e- → Ag(s)) = +0.80 V (given)

To find E°(M3+(aq) + 3e- → M(s)):

E°(M3+(aq) + 3e- → M(s)) = E°(overall reaction) - E°(Ag+(aq) + e- → Ag(s))

E°(M3+(aq) + 3e- → M(s)) = +2.46 V - (+0.80 V)

E°(M3+(aq) + 3e- → M(s)) = +1.66 V

Therefore, the standard reduction potential for the half-reaction M3+(aq) + 3e- → M(s) is +1.66 V.

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Answer:

Pb, Sn, Te, S, Cl

Explanation:

The voltage needed = 120 V

Electric current (symbolized by the letter "i) is the amount of charge flowing in the conductor of each unit of time  

Can be formulated:  

\(\large{\boxed{\bold{I=\frac{Q}{t}}}\)

Q = charge (Coulomb)  

t = time (seconds)  

The international standard unit of electric current is Coulomb/second or Ampere (A).  

Electric current is also a ratio between the voltage and the amount of resistance at the conductor.  

Can be formulated  

\(\large{\boxed{\bold{I=\frac{V}{R}}}\)

V = Voltage (volts)  

R = resistance (ohms)  

I=current=4 A

R=resistance=30 Ω

The voltage needed :

\(\tt V=I\times R\\\\V=4\times 30\\\\V=\boxed{\bold{120~V}}}\)

A voltage is generated between the two cell halves in the \(Zn/Zn^{2+}\)concentration cell. The electrode with the increased concentration of \(Zn^{2+}(1.0 M)\) will be oxidized, while \(Zn^{2+}\) the electrode with the lower concentration of \(Zn^{2+}(10^{-2} M)\) will be reduced.

In a concentration cell, the difference in ion concentration between two electrodes produces a potential difference or voltage. In this case, both electrodes are pure zinc (Zn), and the \(Zn^{2+}\) concentration differs between the two cell halves.

The cell reaction can be depicted as follows:

Zn(s) → \(Zn^{2+}\)(1.0 M) + 2e-  (oxidation at the electrode with 1.0 M \(Zn^{2+}\))

Zn(s) + 2e- → \(Zn^{2+}(10^{-2} M)\) (reduction at the electrode with 10-2 M Zn2+)

The Nernst equation can be utilized to calculate the Ecell.

Ecell = E°cell - \((\frac{RT}{nF}) ln(Q)\)

where:

E°cell=standard cell potential = 0 V

R = gas constant (8.314 J/mol·K)

T = 25°C = 298 K

n = number of electrons transferred = 2

F = Faraday constant = 96,485 C/mol

Q = reaction quotient = ratio of concentrations of \(Zn^{2+}=(\frac{1.0 M}{10^{-2} M})\)

We know that the E°cell is 0 V and the logarithm of Q will be greater than 0 as \((\frac{1.0 M}{10^{-2} M})\) is greater than 1. So, the product of (RT/nF) and ln(Q) will also be positive. Therefore, a voltage is generated between the two cell halves.

So, the electrode with the increased concentration of \(Zn^{2+}(1.0 M)\) will be oxidized, while \(Zn^{2+}\) the electrode with the lower concentration of \(Zn^{2+}(10^{-2} M)\) will be reduced.

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Answer: 7

Explanation:

Before a number but after a decimal. The zeros at the end would usually mean that it doesn't count but since the numbers are before the zeros and after a decimal it's 7 sig figs

Answer:

True.

Explanation:

According to this, an object's rate of change in velocity is directly proportional to the force used and moves in the direction of the applied force. The following formula encapsulates it: force (N) = mass (kg) x acceleration (m/s2). A constant mass item will therefore accelerate in direct proportion to the force exerted.

Answer:

true, I am pretty sure it's true

Answer:

The thermos should have more heat energy because of the greater mass.

Mole ratio is the conversion factor used to convert from moles of substance A to moles of substance B (option C).

Mole ratio is a ratio of the number of moles of one substance to the number of moles of another substance in a balanced chemical equation.

It allows us to convert between moles of different substances involved in a chemical reaction. Molar mass (A), Avogadro's number (B), and the mass of 1 mole (D) can be used to convert between moles and other units, such as mass and number of particles.

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Answer:

1) Conditions necessary for rusting are:

a) Presence of atmospheric oxygen or air

b)Presence of water or moisture

2) For protecting the iron gate, we can paint it because the paint will coat it and protect it from atmospheric oxygen and water.

3) Magnesium, Carbon and Oxygen (MgCO₃)

Short- and medium-chain fatty acids are transported to the liver in the portal vein, whereas long-chain fatty acids are circulated away from the small intestine in the lymphatic system.

The portal vein is responsible for carrying nutrient-rich blood from the small intestine to the liver. Short- and medium-chain fatty acids, which are smaller in size and more water-soluble, are absorbed by the intestinal cells and directly transported to the liver through the portal vein. On the other hand, long-chain fatty acids, which are larger and less water-soluble, are first packaged into chylomicrons by the intestinal cells and then enter the lymphatic system before reaching the bloodstream. This allows for efficient absorption and transport of different types of fatty acids to their respective destinations.

In summary, the portal vein carries short- and medium-chain fatty acids to the liver, while the lymphatic system carries long-chain fatty acids away from the small intestine.

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