(d) (5 pts) A protein has a globular 3D structure without any interior cavity. Out of the 20 amino acids below, circle the residues that can never be found in the interior of the protein in an aqueous solution at pH 7.0? Ala Asp Asn Arg Cys Gly Glu Gln His lle Leu Lys Met Phe Pro Ser Thr Val Tyr Trp

In this question, we have the following reaction, which is the cellular respiration reaction:

C6H12O6 + 6 O2 --> 6 CO2 + 6 H2O

We have:

120 grams of CO2 being produced

The molar ratio between CO2 and O2 is 6:6, which means the same amount of moles produced of CO2 will be the same amount used of O2

Now we find the number of moles of CO2, using its molar mass = 44.01g/mol

44.01 grams = 1 mol

120 grams = x moles

44.01x = 120

x = 120/44.01

x = 2.73 moles of CO2

If we have 2.73 moles of CO2, we will also have 2.73 moles of O2, and to find its mass, we will also use the molar mass of O2 = 32g/mol

32 grams = 1 mol

x grams = 2.73 moles

x = 2.73 * 32

x = 87.4 grams of O2

The amount required of oxygen gas to produce 120 grams of CO2 based on the cellular respiration reaction will be 87.4 grams

Answer:

4.9 × 10²³ molecules

Explanation:

Given data:

Number of molecules = ?

Number of moles of oxygen = 0.815 mol

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ molecules

0.815 mol  ×  6.022 × 10²³ molecules  / 1 mol

4.9 × 10²³ molecules

Answer:

It is a heterogeneous mixture

Answer:

D 4P +3O₂ → 2 P₂O₃

Explanation:

In this problem, we need to convert the mass of phosphorus and oxygen to moles trying to find the ratio of reaction (The moles of P that reacts per mole of O₂):

Moles P:

12.4g P * (1mol P / 31g) = 0.4 moles

Moles O₂:

9.6g * (1mol / 32g) = 0.3 moles

The ratio of reaction is:

0.4 mol / 0.3 mol = 1.33 = 4 moles of P / 3 moles of O₂

That means 4 moles of P react with 3 moles of O₂ and the reaction that represents this ratio is:

The reaction of 12.4 g Phosphorous with 9.6 grams of Oxygen will be represented as \(\rm 4\;P\;+\;3\;O_2\;\rightarrow\;2\;P_2O_3\)

In a chemical equation, the stoichiometric values are the moles of the molecules involved in the reaction. For the reaction of Phosphorous and oxygen, the moles of both elements are to be calculated.

Moles = \(\rm \frac{weight}{molecular\;weight}\)

Moles of Phosphorous = \(\rm \frac{12.4}{31}\)

Moles of Phosphorous = 0.4

Moles of oxygen = \(\rm \frac{9.6}{16}\)

Moles of oxygen = 0.6

Moles of \(\rm O_2\) = 0.3

The equation will be:

\(\rm 0.4\;P\;+\;0.3\;O_2\;\rightarrow\;2\;P_2O_3\)

\(\rm 4\;P\;+\;3\;O_2\;\rightarrow\;2\;P_2O_3\)

The correct reaction will be D.

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We can see here that organizing the information, we have:

Order from the Sun:

Atmosphere: Jupiter and Saturn have thick atmospheres composed mainly of hydrogen and helium, while Uranus and Neptune have thick atmospheres containing methane.

Moons: Jupiter has 79 moons, Saturn has 82 moons, Uranus has 27 moons, Neptune has 14 moons, Pluto has 1 moon (Charon).

A planet is a celestial body that orbits around a star, is spherical in shape, and has cleared its orbit of other debris. To be considered a planet, the object must be massive enough for its own gravity to pull it into a roughly spherical shape and it must dominate its orbit, meaning it has cleared its orbit of other debris.

In our solar system, there are eight officially recognized planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

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The substance having the chemical formula N2O5 is known as dinitrogen pentoxide.  The Rate laws provide a mathematical description of how changes in the amount of a substance affect the rate of a chemical reaction.

Use the rate law for the reaction:
Rate = - Δ[N2O5] / Δt = k[N2O5]^2
Here, k is the rate constant.

We can rearrange this equation to solve for [N2O5]: [N2O5] = - Δt / (kΔ[N2O5])

The data are given to calculate the initial rate of the reaction:
Rate = (-0.92 x 10^-2 mol/L - 1.24 x 10^-2 mol/L) / (20 min - 0 min) = 1.6 x 10^-4 mol/L/min

We can also use the stoichiometry of the reaction to find the rate of change of [N2O5] concerning time:
Δ[N2O5] / Δt = - 2 rate

Substituting the values we have: Δ[N2O5] / Δt = - 2 (1.6 x 10^-4 mol/L/min) = -3.2 x 10^-4 mol/L/min

Now we can plug in the given values to find the concentration of N2O5 at 100 minutes:
[N2O5] = - (100 min - 20 min) / (kΔ[N2O5]) = 80 min / (3.2 x 10^-4 mol/L/min x Δ[N2O5])

To find Δ[N2O5], we can subtract the concentration at 20 minutes from the concentration at 0 minutes:
Δ[N2O5] = 1.24 x 10^-2 mol/L - 0.92 x 10^-2 mol/L = 0.32 x 10^-2 mol/L

Substituting this value into the equation for [N2O5], we get:
[N2O5] = 80 min / (3.2 x 10^-4 mol/L/min x 0.32 x 10^-2 mol/L) ≈ 0.10 x 10^-2 mol/L

Therefore, the answer is (C) 0.10 x 10^-2 mol/L.

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Answer:

Gravitational force is given by:

F=G×

d

2

m×M

Distance between two masses is increased s.t. new distance is D= 5 d

New gravitational force F

1

=F

Let on of the mass is changed to m

1

so as to maintain the same gravitational force.

Answer:

D

Explanation:

F g increases by 25 times

A maximum of two electrons will be placed in 1s first. With a maximum of two electrons, 2s will then be filled. With a maximum of 6 electrons, 2p will then be filled.

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Answer:

Aqueous sodium ions, Aqueous chloride ions

Explanation:

Sodium chloride dissociates into Na+ and Cl- ions in water

Sodium chloride crystals may also be present in case of saturated solution

Answer:

C

Explanation:

because valence electrons are located at the last energy level

Element Grouping Quick Check:

1. Which element has two valence electrons?

D. calcium

2.Based on its position in the periodic table, which element would have seven valence electrons?

A. Chlorine

3. Which phrase describes a valence electron?

C. An electron in the outer energy level of an atom

4. Which phrase best describes a period on the periodic table?

A. A row of elements

5. Which two elements have the same number of energy levels with electrons in them?

A. Boron and Oxygen

Hope this helps!

The incorrect interpretation of the given balanced equation is option a.

2g s + 3g O2 →2 g SO3.

The coefficient of the reacting species and products are not showing the amount in grams.

In the balanced chemical equation of a reaction, all the reactants and products are written in their perfect stoichiometry. The number of each elements in the reactant side must be equal to their number in  product side. So that the law of conservation of mass is obeyed.

The coefficients of the reactants and products can be balanced to equate the number of each elements in both side. The coefficients represent the number of moles of the reactants and products. Sometimes they are considered to be the number of reacting atoms of each elements.

In the given reaction, 2 moles of S reacts with 3 moles of oxygen gas giving 2 moles of sulphur trioxide. Here, the amount in grams are not given. Therefore, option a is incorrect.

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Your question is incomplete. But your complete question is attached below:

Answer:

45.8 CO2 = 1.0406843976868674mol

Explanation:

How many grams CO2 in 1 mol? The answer is 44.0095. We assume you are converting between grams CO2 and mole. You can view more details on each measurement unit: molecular weight of CO2 or mol This compound is also known as Carbon Dioxide.

Credit;

Convert grams CO2 to moles - Conversion of Measurement ...

Aldohexoses have four chiral focuses and, in this way, 24 = 16 isomers. There will be eight d-isomers and eight l-isomers. Thusly, the quantity of enantiomer matches is 8 (2n−1).

An aldohexose has four chiral focuses.

So there are

24=16

optical isomers.

Their perfect representations are the L-aldohexoses, the other 8 of the 16.

Their names are L-allose, L-altrose, L-glucose, and so on.

Consequently, every one of the 16 aldohexoses has its own name.

The four chiral focuses in glucose show there might be upwards of sixteen (24) stereoisomers having this constitution. These would exist as eight diastereomeric sets of enantiomers, and the underlying test was to figure out which of the eight related to glucose. This challenge was acknowledged and met in 1891 by German physicist Emil Fischer. His fruitful exchange of the stereochemical labyrinth introduced by the aldohexoses was a sensible masterpiece, and it is fitting that he got the 1902 Nobel Prize for science for this achievement. At the time Fischer embraced the glucose project laying out the outright setup of an enantiomer was unrealistic. Thusly, Fischer pursued an erratic decision for (D)- glucose and laid out an organization of related aldose setups that he called the D-family. The identical representations of these arrangements were then assigned the L-group of aldoses. To represent utilizing present-day information, Fischer projection formulas and names for the D-aldose family (three to six-carbon atoms) are displayed underneath, with the uneven carbon atoms (chiral focuses) hued red.

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Answer:

They are releasing less carbon dioxide into the air.

Carbon dioxide is what causes global warming and greenhouse gases, etc.

Explanation:

Why:

Because if the temperature is held constant during an experiment, it is controlled. Some other examples of controlled variables could be the amount of light or constant humidity or duration of an experiment etc.

How:

The light intensity (how close the light is). Dependant variable - the number of oxygen bubbles given off (the rate of photosynthesis). Controlled variables - the size of the pondweed, the volume of water used and its temperature.

The Keg = 1, it means that the reaction is at equilibrium, where the rate of the forward reaction is equal to the rate of the reverse reaction. This suggests that the concentration of both the products and reactants are constant and unchanged over time.

The equilibrium, the products and reactants are equally favored in the reaction. This can be determined by calculating the equilibrium constant (Keg) for the reaction, which is the ratio of the concentration of products to reactants at equilibrium. When Keg = 1, the concentration of the products and reactants are equal. If Keg is greater than 1, it means that products are favored over reactants in the reaction, and if Keg is less than 1, it means that reactants are favored over products in the reaction. Therefore, Keg provides insight into the extent to which a reaction proceeds towards the formation of products or reactants at equilibrium.

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A researcher (Pennebaker, 1990) asked people who had experienced a traumatic event to describe the event and how they experienced it. Six months later, he found that these people positive effects on both psychological and physical well-being in the long term.

In Pennebaker's 1990 study, individuals who had experienced a traumatic event were asked to describe the event and their subjective experiences surrounding it. Six months later, Pennebaker found that these individuals demonstrated several outcomes. Firstly, participants who engaged in expressive writing about their traumatic experiences showed improved psychological well-being compared to those who did  not write. The act of writing provided a cathartic release, allowing individuals to process and make sense of their emotions, thoughts, and experiences. This, in turn, facilitated emotional processing and reduced distress. Secondly, participants who engaged in expressive writing also exhibited improved physical health outcomes. They reported fewer doctor visits, fewer physical symptoms, and even improved immune function. The act of writing appeared to have a beneficial impact on the body's physiological responses to stress. Overall, Pennebaker's study demonstrated that engaging in expressive writing about a traumatic event can have positive effects on both psychological and physical well-being in the long term. It highlights the importance of expressive writing as a therapeutic tool for processing and coping with traumatic experiences.

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The Lewis structure of the element have been shown in the image attached.

The valence electrons of an atom or molecule are depicted in a simplified manner by the Lewis structure, commonly referred to as the Lewis dot structure or electron dot structure. Gilbert N. Lewis, an American scientist, created it.

The valence electrons of an atom are shown in a Lewis structure as dots surrounding the element's symbol. These dots' placement reveals details about the connectivity and atom-atom bonding in a molecule.

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The two carbon-sequestering methods that could reduce the impact of deforestation are afforestation and agriculture.

Carbon sequestering

Afforestation

Agriculture

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Answer:

Explanation:

The  number  on the top  right  of  the  symbol shows  ATOMIC NUMBER , if it is written alone only one digit or number overall .

And if the  number is also in bottom left then bottom left number will be ATOMIC NUMBER and top right will be MASS NUMBER

Hope  this will help you *-*

Answer:

Explanation:

The number at the top right shows the electrical charge of the atom. A value of 0 means the atom is neutral, which means that the atom has the same number of electrons and protons.

The mass percent of C2H5NO2 (glycine) in the 1.60 g tablet is approximately 62.4%.

To calculate the mass percent of glycine (C2H5NO2) in the 1.60 g tablet, we'll need to use the information provided: 0.0133 mol of glycine and its molar mass, 75.07 g/mol.

First, let's determine the mass of glycine in the tablet. We'll multiply the number of moles by the molar mass:

Mass of glycine = moles × molar mass
Mass of glycine = 0.0133 mol × 75.07 g/mol
Mass of glycine ≈ 0.998 g

Now, we'll calculate the mass percent of glycine in the tablet. We'll divide the mass of glycine by the total mass of the tablet and multiply by 100:

Mass percent of glycine = (mass of glycine / total mass of tablet) × 100
Mass percent of glycine = (0.998 g / 1.60 g) × 100
Mass percent of glycine ≈ 62.4%

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The study of chemicals and bonds is called chemistry.

The correct answer is 50, 50, and 70.

In an element, there are the following things:-

In elements, the number of protons and electrons are the same. hence, the number of electrons and protons in an element is 50.

The neutrons are defined as the proton minus mass number. Hence, the number of neutrons is 120-50=70

Hence, the answer is  50, 50, and 70

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Cofactor most commonly known for its ability to bind to oxygen, iron also plays the important role of acting as a to many enzymes in numerous oxidation-reduction reactions.

Chemical processes occur when atoms form or break chemical bonds. The molecules that start a chemical are known as reactants, and the compounds which are generated as the result of reaction are known as products.

A physical response is a reaction that modifies the physical characteristics of an item or material Physical characteristics encompass items like mass, volume, etc density.

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Answer:

Newton believed that gravity was a force.

The law of universal gravitation offers a mathematical explanation for the attraction between the moon and Earth.

Newton was the first to have the idea that gravity is everywhere.

Answer:every object attract every other object

Explanation:

A. A triglyceride is the least likely to dissolve in water

Why is a Triglyceride the least likely to dissolve in water?

Fatty substances are nonpolar particles made out of three unsaturated fats and a glycerol particle. Since water is a polar dissolvable, it has serious areas of strength for a for other polar substances.

Because they are nonpolar, triglycerides cannot interact with water molecules because they lack compatible intermolecular forces. Triglycerides are therefore water-insoluble and hydrophobic.

Nucleotides, albumin, and table sugar (sucrose), on the other hand, are all polar or contain polar components, making them able to dissolve in water to varying degrees.

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The least likely to dissolve in the water among the given options is A. A triglyceride. Triglycerides are lipids composed of glycerol and three fatty acid chains. Due to their nonpolar nature, they do not readily dissolve in water, which is a polar solvent.

The least likely to dissolve in the water among the given options is triglyceride. Triglycerides are insoluble in water due to their non-polar nature. They consist of three fatty acid chains and a glycerol molecule and are a type of lipid that serves as a long-term energy storage molecule in the body. On the other hand, nucleotides, albumin, and table sugar (sucrose) are all soluble in water. Nucleotides are the building blocks of DNA and RNA and are essential for the storage and transfer of genetic information.

Albumin is a protein found in blood plasma that plays a role in maintaining osmotic pressure and transporting molecules throughout the body. Table sugar (sucrose) is a carbohydrate composed of glucose and fructose and is commonly used as a sweetener. Overall, the solubility of a substance in water depends on its polarity and intermolecular forces.

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The compound with the most exothermic lattice energy in each of the following pairs of ionic substances is Ca3N2.

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a. Probability (X = 3) = 0.180

b. Probability(X < 3) = 0.676

c. Probability(X >= 3) =  0.324

d. Probability (X >= 1) =  0.865

e. Probability (X >= 5) =  0.0525

(a)  we find the Probability of exactly three insect fragments in a 4-gram sample as :

λ = 0.5 * 4 = 2

P(X = 3) = (e^(-2) * 2^3) / 3!

P(X = 3) =  0.180

(b) Probability of fewer than three insect fragments in a 4-gram sample:

P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2)

P(X < 3) = e^(-2) + (e^(-2) * 2) + (e^(-2) * 2^2)

P(X < 3) = 0.676

(c) Probability of at least three insect fragments in a 4-gram sample:

P(X >= 3) = 1 - P(X < 3)

P(X >= 3) ≈ 1 - 0.676

P(X >= 3) =  0.324

(d) Probability of at least one insect fragment in a 4-gram sample:

P(X >= 1) = 1 - P(X = 0)

P(X >= 1) ≈ 1 - e^(-2)

P(X >= 1) =  0.865

e. The Unusualness of containing five or more insect fragments is found as :

P(X >= 5) = 1 - (P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4))

P(X >= 5) = 1 - (0.1353 + 0.2707 + 0.2707 + 0.1805 + 0.0903)

P(X >= 5) ≈ 1 - 0.9475

P(X >= 5) =  0.0525

In conclusion, the probability of a 4-gram sample of this supply of peanut butter containing five or more insect fragments is found to be 0.0525.

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In general, the arming time of a munition refers to the time required for the munition's fuse to become active and enable the explosive charge to detonate. The arming time can vary depending on several factors, including the type of fuse used, the specific munition model.

Tail fuzes like the M905 tail fuze are designed to be used with certain types of munitions, such as bombs, and are typically armed by the motion or rotation of the munition during its descent or trajectory. The arming time of a tail fuze can depend on several factors, including the munition's velocity, the altitude of the munition, and the specific settings on the fuze.

It's important to note that discussing specific arming times of military munitions is not recommended, as it can be considered sensitive information that should only be handled by authorized personnel with the proper clearance and training to ensure public safety and security.

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Armando used this model to test the idea that you can modify the table legs using a certain sand size and record the results to test the hypothesis that extremely steep hills lead to narrow, deep rivers.

A model is an artificial representation of an object or a process. Models are used to show the process or things that are very big and can not be understood by the actual thing.

Sand, granite, mud, and other objects from the earth are carried away by the energy of the rushing water, along with water-soluble substances like limestone.

Thus, depending on how quickly a river flows, it has more or less. The ability to remove more material, as the river runs more quickly when it is narrow than large, leads to the development of a deep and narrow river.

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The question is incomplete. Your most probably complete question is given below:

Using Models to Answer Questions About Systems

Armando’s class was looking at images of rivers formed by flowing water. Most of the rivers were wide and shallow, but one river was narrow and deep.

Armando’s class thinks that this river is narrow and deep because:

the hill that the water flowed down was very steep, or

the sand grains that the water flowed through were very small.