His and Lys are deprotonated but Asp will be protonated.
What is amino acids?Organic substances that possess both amino and carboxylic acid functional groups are known as amino acids. Although hundreds of amino acids occur in nature, the alpha-amino acids that constitute proteins are by far the most significant. The genetic coding contains only 22 alpha amino acids. Amino acids are chemicals that make proteins when they combine. The building blocks of life are amino acids and proteins. Amino acids are left over after proteins are digested or broken down. To support the body, the human body utilizes amino acids to build proteins: Food should be broken down.
Here,
As the pH is given as 7.4 and pK of His is given as 6.00. There will occur a positive charge on His when it's pH < pK therefore, it is neutral at the given pH.
As the pK value of Lys is 10.53 that is greater than the pH of 7.40. Therefore, charge on Lys is positive.
As the pK value of Asp is 3.65 which is less than the pH value of 7.40. Hence, Asp has a negative charge.
Therefore, we can conclude that His and Lys are deprotonated but Asp will be protonated.
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18) The vinegar was used to remove the shell form the raw egg. What other effect(s) did the vinegar have on the egg
The vinegar also caused the egg white to become more acidic, making it easier to separate from the yolk. Additionally, the vinegar helped preserve the egg by preventing bacteria from growing on the eggshell.
What is bacteria?Bacteria are microscopic organisms that exist virtually everywhere in nature. They range in size from 0.2 to 0.8 micrometers and can be found in soil, water, air, and even inside other organisms. Bacteria can reproduce rapidly, and some species can form biofilms that make them resistant to antibiotics. Bacteria can have beneficial roles in food production, soil fertility, and human and animal health. They can also cause diseases, such as cholera, meningitis, and tuberculosis. Bacteria are able to adapt quickly to changing environments and can become resistant to antibiotics.
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The equation shows the reaction between magnesium and sulfuric acid
Mg + HSO. → MgSO. + H
(Mg=24, H=1, S=32 0=16)
5
In this maction, what mass of magnesium sulfate will be formed when 6g of magnesium reacts
with excess sulfuric acid?
Answer:
Mg + Hso4 - Mgso4 + H
24g of magnesium- 120g of Mgso4
Xg. - 6g of Mgso4
Cross multiply
120x - 144
x = 144/120
x= 1.2g
Can someone please help I’ll give brainliest!!!
How many planes of cleavage does this mineral have? Choose one: A. 0 B. 2 at 90° intersections C. 3 not at 90° intersections D. 1
The planes of cleavage that the mineral have is 1 as the mineral name is Muscovite mica.
The crystal lattice structure of a mineral affects its propensity to split or break along flat planar faces, or cleavage. These 2D surfaces, also known as cleavage planes, are produced by the alignment of atoms in the crystal structure or lattice through relatively weak connections.
The mineral depicted in the image is called "Muscovite mica," and it has layers that seem like flat sheets. Muscovite mica is far more likely to break along the layers because it only has weakly bonded potassium ions. There is just one ideal cleavage plane as a result. This cleavage is evident in the capacity to peel mica sheets.
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Desiré was investigating a chemical reaction.When she heated it up, she found that sulfuric acid changed into water. She made the following atomic-scale model to show what she thinks happened. Do you think this is a complete model of what happened during the chemical reaction?
Answer:
no it is not a complete model
Which sample contains the greatest number of molecules?
A 4g of hydrogen
B 18 g of water
C 24 dm³ of oxygen
D 66 g of carbon dioxide
And why is the answer that way?
Answer:
4g of hydrogen
Explanation:
4g of hydrogen (molar mass 2) corresponds to 2 moles of molecules or 4N number of atoms where N is the Avogadro's number (6.023×10
23)
if a researcher wanted to temporarily denature a protein but wanted to be sure it would refold, which of the following methods or substances would be most appropriate
If a researcher wanted to the temporarily denature a protein but wanted to be sure it would refold, the method or the substances would be most appropriate is the urea.
The denature is defined as the process of the modification of the molecular structure of the protein. In this method it involves the breaking of the many weak linkage or the bonds in the protein molecules. It is responsible for highly ordered of the structure of the protein in the natural of state.
Thus, the urea is the appropriate substances , if the researcher wanted to the temporary denature the proteins.
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Where do the 2 ATP produced in fermentation come from?
Glycolysis during fermentation only yields two ATP each glucose molecule, which is significantly less ATP than is produced during respiration.
What distinguishes a compound from a molecule?A collection of more than two atoms joined by chemical bonds is referred to as a molecule. The compound is a mixture made up of two or more distinct kinds of elements that are chemically combined in a predetermined ratio. Not every molecule is a compound. Molecules make up all chemicals.
Just how many atoms make up a molecule?According to the context, it term might or might not include ions that meet this requirement. A molecule is a collection of atoms that are held together by the attractive forces called as chemical bonds.
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What are the six physical properties associated with hazard recognition of hazardous materials/chemicals
The six physical properties associated with hazard recognition of hazardous materials/chemicals are Flammability, Reactivity, Toxicity, Corrosivity, Physical hazards, Health hazards are explained below with details.
1. Flammability: The ability of a material to catch fire and burn easily.
2. Reactivity: The ability of a material to chemically react with other materials, including the potential for explosions or release of toxic gases.
3. Toxicity: The ability of a material to cause harm or death when ingested, inhaled, or absorbed through the skin.
4. Corrosivity: The ability of a material to eat away at or damage other materials, including metals and human tissue.
5. Physical hazards: The potential of a material to cause harm through physical means, such as pressure, impact, or friction.
6. Health hazards: The potential of a material to cause harm to human health, including acute and chronic effects.
These are the six physical properties associated with hazard recognition of hazardous material.
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If 0.40 mole of H2 and 0.15 mole of O2 were to react as completely as possible to produce H2O, what mass of reactant would remain
The remaining mass of hydrogen that is present in the reaction is 0.20 grams.
The balanced chemical reaction can be depicted as follows:
2H2+O2---->2H2O
1 mole of Oxygen reacts with 2 moles of Hydrogen in order to produce two moles of water i.e., H2O.
0.15 moles of O2 reacts with 2 * 0.15 = 0.30 moles of H2
The moles of H2 are given i.e., 0.40 moles.
So remaining = 0.40 moles - 0.30 moles = 0.10 moles
Thus, the mass of H2 can be calculated by multiplying the number of moles with the molar mass that is expressed as follows:
Mass = moles * molar mass
Molar mass of H2= 2 g/mol
Mass of H2 remained in the reaction = 0.10 moles * 2 g/mole = 0.20 grams.
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How much water must be added to 516 mL of 0.191 M HCl to produce a 0.133 M solution? (Assume that the volumes are additive)
Answer:
225 mL of water must be added.
Explanation:
First we calculate how many HCl moles are there in 516 mL of a 0.191 M solution:
516 mL * 0.191 M = 98.556 mmol HClNow we use that number of moles (that remain constant during the dilution process) to calculate the final volume of the 0.133 M solution:
98.556 mmol / 0.133 M = 741 mLWe can calculate the volume of water required from the volume difference:
741 mL - 516 mL = 225 mLWould you expect metals to have high ionization energies or low ionization energies? Support your answer by relating ionization energy to the formatation of ions.
Answer:
Explanation:
Would you expect metals to have high ionization energies or low ionization energies? Support your answer by relating ionization energy to the formulation of ions.
By natural process, elements individually gain or lose electrons by the path of least resistance to form an element with a Noble Gas electron configuration. That is, elements containing less than 4 electrons (Groups IA through Groups IIIA and include the Transition Elements) tend to lose electrons and become positive cations. Elements containing 4 or more valence electrons generally tend to gain electrons forming negative anions. In general, the elements forming cations are collectively ‘The Metal Elements’ and the elements forming anions are collectively ‘The Nonmetal Elements’.
The chart following the explanation text shows metals in blue, metalloids in green and nonmetals in yellow. In general, metals tend to lose electrons, nonmetals tend to gain electrons and metalloids sometimes gain and sometimes lose depending upon the compound of interest.
(see chart at end of explanation)*
Trends in ionization energy depend upon three factors, 1. Atomic and Ionic Radii, 2. The amount of energy needed (gain/endothermic process) to remove electrons from the element’s electronic structure and 3. ‘Electron Affinity’ an energy term describing the amount of energy lost (exothermic process) when an electron is added into the valence shell of an element.
Atomic and Ionic radii of metals tend to decrease with increasing atomic number. That is, in a given series the 1st element would have the largest atomic and ionic radii and sequentially decrease through the smaller radii as atomic number increases. In order of increasing atomic number the following 1st ionization energies (removal of 1st electron) are known for the listed metallic elements of series 2 of the periodic table:
Li + 520Kj/mole => Li⁺ + eˉ (valence electron is farther away from nucleus than the next two elements in series.)
Be + 900Kj/mole => Be⁺ + eˉ (electronic orbital structure is more stable for the 1st 2eˉs)
B + 801Kj/mole => B⁺ + eˉ (electron orbital structure is less stable (easier to remove) for 3rd electron requiring a lower ΔEᵢ.)
In the series, the elements are increasing in proton and electron number resulting in smaller radii and stronger attractive electrostatic forces (stronger bond) between the nucleus and electron cloud. Relating this trend to the 1st ionization energy values shown above, the larger radii requires lower ionization energies as the valence electron is farther from the nucleus with a weaker bond than subsequent elements in the same series.
In a more fundamental context, consider Lithium (Li) with its 1 valence electron. By path of least resistance concept (see 1st sentence), would it be more reasonable for lithium to gain 7 electrons to achieve a Noble Gas configuration (i.e., Ne) or lose 1 electron to achieve the Noble Gas configuration (i.e., He)? By natural path of least resistance, Li would tend to lose its one valence electron forming the cation Li⁺. Of course, with a little thought, gaining 7 electrons would be improbable as lithium has only 3 protons (+); certainly not enough attractive force to hold 8 electrons (1e⁻ + 7e⁻ gained).
how to go from grams to atoms?
Answer:
U could use the formula
Explanation:
To calculate the number of atoms in a sample, divide its weight in grams by the amu atomic mass from the periodic table, then multiply the result by Avogadro's number: 6.02 x 10^23
Oxygen and chlorine gas are mixed in a container with partial pressures of 0.53 atm and 0.639 atm, respectively. What is the total pressure inside the container (in atm)?
Answer:
1.17 atm
Explanation:
Calculation to determine the total pressure inside the container (in atm)
Using this formula
Total pressure = Partial pressure 1 + Partial pressure 2
Where,
Partial pressure 1=0.53 atm
Partial pressure 2=0.639 atm
Let plug in the formula
Total pressure = 0.53 atm + 0.639 atm
Total pressure = 1.17 atm
Therefore the total pressure inside the container (in atm) is 1.17 atm
I have 5mg of a powder chemical substance that I need to dissolve in a solvent with a 2g/L solubility. I ultimately need to give two doses of the chemical: 10ug/L and 100 ug/L. Ultimately, I must add between 5ul and 10ul of the stock solution. I can create up to 3 stock dilutions. How can I solve this problem? Please show all work so I can learn! Thank you.
We need to take 5ul of stock solution and add it to 5ul of diluent to achieve a final concentration of 100ug/L.
How calculate the stock solution?To solve this problem, you will need to create a stock solution of the chemical substance and then dilute it to the desired concentrations. Here's one way you could approach it:
Create a stock solution by dissolving the 5mg of powder in a solvent with a 2g/L solubility. We know that the solubility of the substance is 2g/L, so we can use the formula:
Stock solution concentration = (mass of substance) / (volume of solvent)
In this case, the mass of the substance is 5mg and the volume of solvent is 1L. So, the stock solution concentration is:
5mg / (1L) = 5mg/L
Dilute the stock solution to the desired concentration for the first dose of 10ug/L. To do this, we can use the formula:
Desired concentration = (volume of stock solution) / (volume of diluent)
In this case, we want a final concentration of 10ug/L, so we'll let the volume of stock solution be x and the volume of diluent be (5ul-x). Then we can set up the equation:
10ug/L = (x) / (5ul-x)
Solving this equation:
x = 0.5ul
Therefore, we need to take 0.5ul of stock solution and add it to 5ul of diluent to achieve a final concentration of 10ug/L
Dilute the stock solution to the desired concentration for the second dose of 100ug/L. Using the same formula as before:
Desired concentration = (volume of stock solution) / (volume of diluent)
In this case, we want a final concentration of 100ug/L, so we'll let the volume of stock solution be y and the volume of diluent be (10ul-y). Then we can set up the equation:
100ug/L = (y) / (10ul-y)
Solving this equation:
y = 5ul
Therefore, we need to take 5ul of stock solution and add it to 5ul of diluent to achieve a final concentration of 100ug/L
So, you can create a stock solution by dissolving 5mg of powder in a solvent with 2g/L solubility and obtain a stock solution of 5mg/L. With this stock solution, you can create two dilutions, the first one is 10ug/L by adding 0.5ul of stock solution to 5ul of diluent, and the second one is 100ug/L by adding 5ul of stock solution to 5ul of diluent.
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The rate law for the reaction2NOBr
The rate constant of the reaction is 0.56 M⁻¹s⁻¹. The time required to change the concentration of the reactant from 0.900 to 0.100 M is 15.87s.
What is the half-life period of a reaction?The half-life of a reaction can be defined as the time needed for a reactant to reach one-half of its initial concentration. For a 1st-order reaction, the half-life is independent of concentration and constant with time.
The half-life period of the second-order reaction can be written as:
[tex]\displaystyle t_{1/2} =\frac{1}{k[A]_o}[/tex]
Given the half-life of the reaction = 2.00 s
The initial concentration of [NOBr]₀ = 0.900 M
The rate constant of the reaction, k = 1/2 ×0.900 = 0.56 M⁻¹s⁻¹
The time required to change concentration from 0.900 to 0.100 M is:
[tex]\displaystyle kt =\frac{1}{[A]} -\frac{1}{[A]_o}[/tex]
0.56 ×t = 1/0.1 -1/0.9
t = 15.87 s
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On the locating the epicenter exploration what city was near the epicenter?
A)Rio de Janeiro
B) Buenos Aires
C)Valparaiso
D)Lima
13 POINTS!! Helpp
A beautyberry is a type of shrub that grows well in the southern United States. Some students have a small beautyberry shrub that is growing near their school. They record the number of berries, ripe or unripe, and the number of flowers at different times throughout the year.
Table. Column headings. Month, ripe berries, unripe berries, flowers. September, 9, 4, 2. October, 5, 10, 4. November, 5, 7, 3. December, 2, 3, 1. February, 3, 2, 0. March, 6, 11, 5. April, 12, 5, flowers 9. June, 3, 8, 2.
Which statement best explains what is shown in their data?
Choose the correct answer.
Responses
A.The beautyberry relies on wind to spread its seeds.
B..The beautyberry relies on one type of animal to eat the berries.
C.The beautyberry uses asexual reproduction to make new plants.
D.The beautyberry increases its chances of reproduction because its berries do not all become ripe at the same time.
The statement that best explains what is shown in their data is option D. The beautyberry increases its chances of reproduction because its berries do not all become ripe at the same time.
What is the beautyberry about?The data shows that the number of ripe berries and unripe berries varies from month to month, with the most ripe berries in April and the least in December.
This indicates that the beautyberry does not have all of its berries ripen at the same time, which increases the chances of some of them being eaten and spread by animals. This would help increase the chances of the beautyberry reproducing and spreading to new locations.
Therefore, It does not seem from the data provided that it relies on wind to spread its seeds or that it relies on one type of animal to eat the berries, or it uses asexual reproduction to make new plants.
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PLEASE HELP me create a fictional video game using at least 2 of the ecological roles. (roles to choose from: decomposer, detritivore, pollinator, and seed disperser) (PLS TYPE IT OUT, PLS PLS)
what to include:
-Your characters (include creative names)
-An explanation of how the game is played
-The story of the game
-How the game is won/lost
-Connect the definition of of the two roles with the game and/or how the game is won.
Write a paragraph with at least 7-10 sentences.
BTW ILL GIVE BRAINLIEST OR WHATEVER ITS CALLED!! PLEASE HELP MEE! DESPERATE! IVE BEEN STARING AT THE SCREEN AND CRYING LOLZ <3
Answer:
GOT YOU
Explanation:
Jotun (pollinator)
Norse(decomposer)
Its a point and click adventure game. Where you only have specific actions you can do with your mouse. The basic options are Inspect for notes or Pollinate pollinate the right plants to escape. Your goal and how to win is go through each level picking up the plants to pollinate leave the level. The only way to lose is if you are unable to find the right plants by a set amount of time. The story is your wife has been taken prisoner by Norse and you are alerted by this from a note. You go to a location and find a tower once you walk in the doors shut behind you and a screen appears saying "Get out of the room and to the top of the tower in an hour or she dies. Jotun escapes and gets to the top of the tower to find out his wife died long ago and Norse has been using her for food.
Describe what and how solids look like
reaction between yellow solid and water
Answer:
A precipitate is formed as a result of a double displacement reaction. Explanation: When two substances (can be aqueous or liquids) in solution ...
Seismic station A is 5000 kilometers from the epicenter. What is the difference between the arrival time of the first P-wave and the arrival time of the first S-wave recorded at this station?
2 minutes 20 seconds
6 minutes 40 seconds
8 minutes 20 seconds
15 minutes 00 second
Answer:
6 min 40 sec
Explanation:
Hope this helps you :)
The difference between the arrival time of the first P-wave and the arrival time of the first S-wave recorded at the station will be 6 minutes 40 seconds.
What are Body waves ?P waves move the fastest and arrive first from the earthquake. Rock oscillates perpendicular to the direction of wave propagation in S or shear waves.
In rock, S waves move at approximately 60% the speed of P waves, and the S wave always comes after the P wave. Sound waves, for example, are P waves with a high enough frequency to be heard with your ear.
Wiggling or shaking a rope that is tied down at one or both ends is an example of a S wave.
Both P and S waves propagate outward from an earthquake focal point within the ground.
The waves are frequently observed as independent arrivals on seismographs located at great distances from the earthquake. The direct P wave arrives first because its course takes it through faster moving, denser rocks deeper in the ground.
Because they pass through deeper, lower velocity rocks, the PP (one bounce) and PPP (two bounces) waves move more slowly than the straight P. After the P waves, the various S waves arrive.
To conclude with we can say that Seismic waves or body waves are elastic waves created when the earth's crust is disturbed. The wave is classified into two types body waves and surface waves. The P and S - waves that move through the ground are body waves.
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If we react 14 moles of oxygen with five moles of ethane how many moles of carbon dioxide would we make
Answer:46 moles of carbon dioxide and 12 moles of ethane.
Explanation:
46 moles of carbon dioxide and 12 moles of ethane.
What is Carbon dioxide?A non-flammable, colorless gas, carbon dioxide is. While being far less common in the atmosphere than nitrogen and oxygen, carbon dioxide plays a crucial influence in determining the composition of the air on our planet.
Carbon dioxide, a colourless gas having a faint sharp odour and a sour taste. It is one of the most important greenhouse gases linked to global warming, but it is a minor component of Earth’s atmosphere .
It is formed in combustion of carbon-containing materials, in fermentation, and in respiration of animals and employed by plants in the photosynthesis of carbohydrates.
Therefore, 46 moles of carbon dioxide and 12 moles of ethane.
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What is the E0cell? Mg 2+|Mg and Ci2|Ci
The E0cell for the halfcell that we have in the question is 3.73 V.
What is the cell potential?We have to know that the cell potential as we know it has to do with the electrical potential that is involved when we have the oxidation or the reduction of a given specie. In the case of what we have here, we have the cells that are composed of magnesium and chlorine and we want to find the electrode potential of the cells.
We must note that the basis that we can be able to use to find the electrode potential of the cell is the standard hydrogen electrode which has been assigned the value of about 0.00 V and all of the other cell potentials that we have can now be measured against this standard that has been fixed.
We have;
Magnesium half cell= -2.37 V
Chlorine half cell = + 1.36 V
Then we have;
E0cell = + 1.36 - (-2.37)
= 3.73 V
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QUESTION 2 What is the uncertainty (in % RSD) of a standard solution prepared by pipetting 20mL of a 0.2487 M (s
The formula for standard deviation is: = (V1/C1) + (V2/C2) +... + (Vn/Cn).
How could we ascertain if the standard solution created using a pipette is correct?Calculating the percent relative standard deviation (RSD) of the measurement will allow us to ascertain the degree of uncertainty in a standard solution created by pipetting 20 mL of a 0.2487 M (stock) solution.
The RSD is determined by multiplying the standard deviation by the mean and then by 100. The formula to determine the standard deviation is: = (V1/C1) + (V2/C2) +... + (Vn/Cn).
Where n is the number of measurements, C is the stock solution's concentration, and V is the volume of solution added.
We are unable to compute the RSD for the given information since you have not provided any information regarding the number of measurements taken.
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Please help : ) and please explain in answer
The transfer of energy doe not always affect the appearance of the lake because it can attain a form that is quite similar to the other. It can be because of conduction, convection, and radiation.
What are the processes of heat transference?Heat transference can be described as a natural phenomenon that can be caused by conduction, convection, or radiation.
Convection can be defined as the transfer of energy in a given fluid such as, in this case, water. The energy transfer is due to particular molecular motion, energy is transferred by bulk, or macroscopic, the motion of the fluid.
Radiation can be defined as heat transfer through space due to electromagnetic radiation. Conduction can be defined as the transfer of energy between molecules due to direct contact.
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which 4 planets belong together? which 4 planets lumped together have the most similarities
Answer:
did you mean to add or attach a paper to this? We need more info to help
Explanation:
Answer:Mars, earth, Uranus and Jupiter
Explanation:
What will be the pH of solution after sodium acetate solution in the middle or the last column reacts with the specified concentration of HCl
The pH of the final solution will be less than 7, but closer to 7 if the initial concentration of sodium acetate is high and the concentration of HCl is low.
The pH of a solution after a reaction with a strong acid like HCl will depend on the concentration of the acid and the concentration of the acetate ions (CH3COO-) in the sodium acetate solution. Sodium acetate (CH3COONa) is a weak base, and when it reacts with HCl, it forms acetic acid (CH3COOH) and sodium chloride (NaCl). The equation for this reaction is: CH3COONa + HCl → CH3COOH + NaClThe pH of a solution is a measure of the concentration of hydronium ions (H3O+) in the solution, so the pH of the solution after the reaction will depend on the concentration of H3O+ ions and the concentration of acetate ions. If the reaction is done in aqueous solution, the acetic acid formed will dissociate to form H3O+ and acetate ions. The acetate ions will neutralize some of the H3O+ ions, thus decreasing the overall acidity of the solution. The pH of the final solution will be less than 7, but closer to 7 if the initial concentration of sodium acetate is high and the concentration of HCl is low. It's important to note that without knowing the initial concentration of sodium acetate and the volume of the solutions it is not possible to determine the final pH.
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A car has a mass of 2,050 kg and is traveling at 28 meters per second. What is the car's kinetic energy?
After solving the equation the car's kinetic energy is 783,500 kg m2/s2.
What is kinetic energy?Kinetic energy is the energy of motion, or the energy associated with an object or system due to its motion. It is a form of energy that can be converted into other forms of energy, such as thermal energy, sound energy, electrical energy, and so on.
The car's kinetic energy is the energy it has due to its motion. Kinetic energy is calculated as KE = 1/2mv2, where m is mass and v is velocity. In this case, the car has a mass of 2,050 kg and is traveling at 28 meters per second. Plugging these values into the equation gives:
KE = 1/2(2050 kg)(28 m/s)2
= 1/2(2050 kg)(784 m2/s2)
= 783500 kg m2/s2
Therefore, the car's kinetic energy is 783,500 kg m2/s2.
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A 250mL sample of oxygen is collected over water at 30 C and 850 torr pressure. What is the pressure of the dry gas alone?
Answer:
[tex]p_O=818.2torr[/tex]
Explanation:
Hello there!
In this case, according to the given equation, it is possible to calculate the mass of oxygen by using the Dalton's law, considering that the total pressure is 850 torr and the vapor pressure of water at 30°C is 31.8 torr:
[tex]P_T=p_O+p_{H_2O}[/tex]
Thus, we solve for the pressure of oxygen as follows:
[tex]p_O=P_T-p_{H_2O}\\\\p_O=850torr-31.8torr\\\\p_O=818.2torr[/tex]
Best regards!