polysaccharides are made when monosaccharides are bound together through

1.Atomic Number (Z) = Mass Number (A) - Number of Neutrons

neutrons = mass number-atomic number

Atomic mass Cl-37= 17

Mass number Cl-37=37

Neutrons = 37-17=20

2. Mass atom X = mass isotope 1 . % + mass isotope 2.%...

\(\tt atomic~mass~X=0.0224\times 88+0.7832\times 90+0.1944\times 91=90.1\)

3. The energy in one photon can be formulated as

\(\large{\boxed{\bold{E\:=\:h\:.\:f}}}\)

f = c / λ, so :

\(\tt E\approx f\approx \dfrac{1}{\lambda}\)

Energy is directly proportional to frequency and inversely proportional to the wavelength

So, as the frequency of photon increases, the energy of photon increases

4. Based on answer number 3 :

A. The wavelength becomes longer, and the energy decreases

The pressure of the gas 123 atm.

How do you find the pressure of a gas?

Pressure is the amount of force a substance applies to another substance per unit of area. The force that the gas applies to the container boundaries is known as the gas's pressure.

Along the designated volume, the gas molecules move at random. They bump into the ground and each other throughout this movement.

The effect of each gas molecule is too small to be felt, let alone seen. However, the gas pressure is determined by the combined impact of all gas molecules

P = nRT / V

Gas constant, R-.082 L.atm/mol.k

here  number of moles, n=  5 moles

temperature, T = 27°C = 300.15 kelvin

volume,   V = 10 liter

Then values given in the equation P = nRT / V

  the pressure of the gas P

                         =  5*.082*300.15/1

                          =     1,230.615/10  

                           = 123 atm    

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False. A polypeptide will have a negative net charge at ph=0.

A peptide is a small, chemically bound chain of amino acids, usually between two and fifty amino acids (called peptide bonds). A polypeptide is a longer (51 or more amino acids) chain of connected amino acids. One or more polypeptides are used to create the proteins that are produced inside of cells.

Polypeptides. Proteins are created by joining several amino acids together to form polypeptides. The coupling of two or so more polypeptides results in the formation of proteins, after which they are folded into the appropriate shape.

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Answer:

Its the second one i think

Explanation:

Coz liquid can move faster then a solid obviously :)

A. Neither option is a proper way to convert carbon (atomic number: 6) to gold (atomic number: 79). Nuclear reactions, including nuclear fusion or nuclear decay, are usually necessary to transform one element into another; These reactions cannot be done simply by adding or subtracting protons or adding atoms.

B. The time taken by a radioactive substance to decay by half is known as its half-life. In this example the half-life of uranium-234 is specified as approximately 25000 years.

We need to calculate the half-life number to establish how much uranium-234 will still be present after 100,000 years.

100 thousand years / 25 thousand years per half-life = 4 half-lives

After four half-lives, the amount of radioactive material is halved with each half-life, and the residual amount can be estimated as follows:

(1/2)^(number of half-lives) * initial amount

\((1/2)^4 * 200\) grams

= (1/16) * 200 grams

= 12.5 grams

So, the correct option is D.

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Answer:

s+o2=so2

Explanation:

i hope it will help u

The mutated amino acid at position 229 is arginine (Arg), and its substitution can potentially disrupt the 3D structure and alter the function of the protein due to changes in side chain properties and interactions.

Structure of the Amino Acids:

The wild-type amino acid at position 229 is not specified, so the structure cannot be provided.

The mutated amino acid is arginine (Arg), which has a side chain containing a positively charged guanidinium group.

Importance of the Position:

The specific position 229 in the protein sequence may be functionally significant, such as being involved in protein-protein interactions, binding sites, catalytic activity, or structural stability.

Without detailed knowledge of the protein, its function, and its structural context, it is difficult to determine the exact importance of this specific position.

Effects of the Mutation on Structure and Function:

The substitution of an amino acid at position 229 from the original to arginine can have various effects on protein structure and function.

Arginine's larger and positively charged side chain may introduce steric clashes or alter electrostatic interactions within the protein structure.

The mutation can potentially disrupt local or global protein folding, stability, or conformational changes, affecting its overall 3D structure.

The functional consequences of the mutation depend on the specific role of the amino acid at position 229, which can include changes in protein-protein interactions, enzymatic activity, substrate binding, or signal transduction pathways.

It is crucial to analyze the protein's structural context, available experimental data, and computational modeling techniques to gain a more accurate understanding of the specific effects of the mutation on the protein's structure and function in the given context.

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Answer:

Mass = 27.2 g

Explanation:

Given data:

Volume of gas = 22.7 L

Pressure of gas = 200.0 KPa (200/101=1.97 atm)

Temperature = 50.0°C

Mass of gas = ?

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

Now we will convert the temperature.

50+273 = 323K

1.97 atm ×22.7 L = n × 0.0821 atm.L/ mol.K  × 323K

44.72 atm.L = n × 26.52 atm.L/ mol

n =  44.72 atm.L / 26.52 atm.L/ mol

n = 1.7 mol

Mass of CH₄:

Mass =  number of moles × molar mass

Mass = 1.7 mol × 16 g/mol

Mass = 27.2 g

Answer:

Nitrogen

It has the least number of protons in the group hence making it smaller

Explanation:

According to periodic table, electronegativity increases across the period and decreases down the group.

Electronegativity is the tendency of an element to accept electrons towards itself.

In this group of elements, nitrogen has the highest electronegativity because it has the least number of protons in the group. Increase in the number of protons decreases an elements electro negative value.

The least electronegative element in that group is Antimony (Sb).

Electronegativity increases across the period and decreases down the group while electropositivity decreases across the period and increases down the group.

The energy (a) in EV and (b) in joules of the third energy level (n= 3) of the hydrogen atom.

-1.51 eV

-2.42 x 10^-19 J

In physics, energy is a quantitative property that is transferred to a body or physical system and can be perceived in the performance of work or in the form of heat and light. Energy is Conserved - The law of conservation of energy states that energy can be transformed into form, but cannot be created or destroyed.

The energy price cap, introduced in 2019 by market regulator Ofgem, sets the maximum amount (known as the “unit price”) that utilities can charge per kWh of gas and electricity. There is no right or wrong answer to choosing between a fixed power plan and a variable power plan. Which energy rate is best for your home depends on your assessment of future energy prices and your willingness to take risks. Compare energy suppliers to find the perfect match.

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Answer:

carbon dioxide and water

Explanation:

The process by which plants make their food with the help of water, carbon dioxide, sunlight and convert it into sugar and provides energy to the plant.

Hope it helps you.

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Have a great day !

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In the lab, electrochemical cells are being constructed with copper electrodes in copper (II) solution for both half-cells. The expected standard cell potential (Eºcell) for a voltaic cell consisting solely of copper is 0.00 V.

The standard cell potential, denoted as Eºcell, represents the potential difference between the two half-cells of an electrochemical cell. It is a measure of the cell's ability to generate an electric current. In this case, since both half-cells contain copper electrodes in copper (II) solution, there is no difference in the reduction potential of the two half-reactions. This results in an equal and opposite potential, leading to a net cell potential of zero. This implies that no spontaneous redox reaction occurs and no electrical energy is generated or consumed within the cell.

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Answer:

Chlorine

Explanation:

Deforestation often disrupts ecosystems and can lead to species extinction.

Reforestation on the other hand can increase local biodiversity and species populations. Soil quality. Deforestation can destabilize soils, accelerate erosion, and reduce nutrient levels in terrestrial ecosystems. If deforestation continues at current rates, the world's rainforests will disappear within 100 years, with unknown impacts on global climate and the extinction of most of the planet's plant and animal species.

Increased heat disruption of the hydrological cycle and loss of shade will wreak havoc on billions of people and livestock. Poverty and death will afflict many of her 1.6 billion people who currently depend directly on forests for their livelihoods, including food and medicine harvests. When forests are cut down, much of the stored carbon is released into the atmosphere as carbon dioxide.

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Answer:

Exothermic

Explanation:

The equation of the reaction is given as;

H₂O(vapour) --> H₂O(liquid)

The equation above represents a condensation process. Water vapour condenses to liquid.

Condensation involves loss of energy as heat. The equation can be modifies as;

H₂O(vapour) --> H₂O(liquid) + Heat

Due to the loss of heat, condensation is regarded mas an exotheric process.

Answer:

The volume of 5.0 g CO2 is 2.6 L CO2 at STP.

Explanation:

hope this helps :)

Recently, the major causes of acid-generating emission have shifted from nitrogen oxides to sulfur oxides and ammonia.

This shift is a result of a decrease in NOx emissions due to improved controls on the emissions from motor vehicles and large stationary sources, and an increase in SOx and ammonia emissions from agricultural sources and stationary power plants.

Based on the explanation given above,

the correct option among the given options is B) sulfur oxides to nitrogen oxides and ammonia.

Nitrogen is an important component of many organic and inorganic compounds, and it is essential for life. It makes up about 78% of the Earth's atmosphere and is commonly used in fertilizers, explosives, and refrigerants.What is Ozone?Ozone is a type of gas that is found in the Earth's atmosphere. It is created naturally by the sun's ultraviolet rays and by lightning. It is also produced by human activities, such as burning fossil fuels.

Ozone is important because it protects us from harmful UV radiation from the sun.

However, too much ozone at ground level can be harmful to human health and the environment.

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Answer:

Chemistry reactions are used in art for the following processes;

1) Analog photography

The photographic paper used in analog photography react when exposed to light such that the image on the film stains the photopaper

A series of chemicals are further used to develop the images now carried on the paper and water is used to rinse of the chemicals after the other chemical processes are complete

The photopaper, now bearing the developed photo is hung for it to be dried

2) Paint used for painting consists of several chemicals, including, minerals that serve as pigment, oils that serve as carrying agent, a thinner to prevent the paint from turning to solid

An artist therefore combines different chemicals for a given paint task

3) In the sculpting process

An original sculpture is produced by the artist with the aid of clay or plaster, from the original sculpture, on which wax coatings and chemicals are used to make a replica mold.

Copies of the sculpture can then be made by pouring material into the mold

Explanation:

a) The sphere emits thermal radiation at a rate of 139.75 Watts.

b) The sphere absorbs thermal radiation at a rate of 37.66 Watts.

c) The sphere's net rate of energy exchange is 102.09 Watts.

To calculate the rates of thermal radiation emission and absorption, we can use the Stefan-Boltzmann law, which states that the rate of thermal radiation emitted or absorbed by an object is proportional to its surface area, temperature, and the Stefan-Boltzmann constant.

a) The rate of thermal radiation emitted by the sphere can be calculated using the formula:

Emitting Rate = emissivity * surface area * Stefan-Boltzmann constant * (\(temperature^4 - environment\ temperature^4\))

Plugging in the given values:

Emitting Rate = \(0.924 * (4\pi * (0.457)^2) * 5.67 \times 10^{-8} * ((32.2 + 273.15)^4 - (82.9 + 273.15)^4)\)

Emitting Rate ≈ 139.75 Watts

b) The rate of thermal radiation absorbed by the sphere can be calculated in a similar way but using the environment temperature as the object's temperature:

Absorbing Rate = emissivity * surface area * Stefan-Boltzmann constant * (\(environment\ temperature^4 - temperature^4\))

Plugging in the given values:

Absorbing Rate = \(0.924 * (4\pi * (0.457)^2) * 5.67 \times 10^{-8} * ((82.9 + 273.15)^4 - (32.2 + 273.15)^4)\)

Absorbing Rate ≈ 37.66 Watts

c) The net rate of energy exchange is the difference between the emitting rate and the absorbing rate:

Net Rate = Emitting Rate - Absorbing Rate

Net Rate = 139.75 Watts - 37.66 Watts

Net Rate ≈ 102.09 Watts

Therefore, the sphere emits thermal radiation at a rate of 139.75 Watts, absorbs thermal radiation at a rate of 37.66 Watts, and has a net rate of energy exchange of 102.09 Watts.

Note: The units for all the rates are Watts.

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The most basic type of solid crystalline lonic compounds. Ions form the bulk of an ionic composition.

The correct statememnt is A.

Ionic in nature, the covalent connection between the two hydrogen atoms in a water molecule is created when they deposit their positive charges on opposing sides of the oxygen atom, which has a negative charge.

Ionic radius affects how strong an ionic bond is. The ionic lattice can accommodate smaller ions by allowing for closer packing. The electrostatic forces between oppositely charged ions become greater the closer they are to one another, and this increases the strength of the ionic bond.

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The change in entropy of the 979 piece of granite is approximately 1.53 J/K.

To calculate the change in entropy, we need to use the formula:

ΔS = Cln(T2/T1)

where ΔS is the change in entropy, C is the heat capacity of the material, T1 is the initial temperature, and T2 is the final temperature.

Since the material in question is granite, we can assume that its heat capacity is approximately constant over the given temperature range. We can use the specific heat capacity of granite (0.79 J/g*K) to calculate the entropy change:

ΔS = (0.79 J/g*K) * ln(59°C/15.8°C)

≈ 1.53 J/K

Therefore, the change in entropy of the 979 piece of granite is approximately 1.53 J/K.

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This reaction produces 12.5g of water from 72.6g of sulfuric acid and 77.0g of sodium hydroxide. To calculate the percent yield of water, we need to calculate the theoretical yield of water first.

Let's calculate this step-by-step:

The molecular weight of sulfuric acid is 98g/mol, and the molecular weight of sodium hydroxide is 40g/mol.

The theoretical yield of water can be calculated using the following equation:

Theoretical Yield of Water = (98 g/mol * 72.6g/1mol) / (98 g/mol + 40 g/mol) * 40 g/mol

Theoretical Yield of Water = 16.25 g

Therefore, the percent yield of water can be calculated using the following equation:

Percent Yield of Water = (Actual Yield of Water / Theoretical Yield of Water) * 100%

Percent Yield of Water = (12.5 g / 16.25 g) * 100%

Percent Yield of Water = 76.92%

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This reaction results in the formation of a new C-C bond and The product of this reaction is an amine with a longer carbon chain. The correct options are B) and C).

When a nitrile reacts with a Grignard or organolithium reagent followed by an aqueous workup, it undergoes a nucleophilic addition reaction. The carbon of the nitrile acts as an electrophile, and the carbon of the organometallic reagent acts as a nucleophile. The reaction leads to the formation of a new carbon-carbon (C-C) bond. The resulting product is an amine with a longer carbon chain than the original nitrile. The addition of the organometallic reagent introduces alkyl or aryl groups to the nitrogen atom, extending the carbon chain.

Hence options B and C are correct.

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Answer:

The higher the temperature the more water evaporates and that affects the convection process

Explanation:

Answer:

c

Explanation:

metals are good conductors, while non metals are not good conductors

Surface model,we used a supercell of

16.1106×16.1106×18.0 And a model of a 3 × 3

9 atoms..

Answer:

I believe It would be North America

Explanation:

South and North America are connected.

I hope this helps. :)

Answer:

it has 9 sulfur atoms

Explanation:

you have to multiply the 3 outside the bracket by the one in side to get your answer

Answer:

The correct answer is "Stirring the water decreases the amount of time it takes for materials to dissolve"

C

Explanation:

Answer:

C) Stirring the water decreases the amount of time it takes for materials yo dissolve.

Explanation: