All nine of the necessary amino acids that humans need are present in milk proteins.
Although the mammary gland produces the proteins in milk, 60% of the amino acids needed to make those proteins come from the cow's diet. So the milk from cows may also provide us with protein.
Why are dairy cows dependent on protein?The dairy cow needs proteins for a variety of metabolic processes, including growth, lactation, and reproduction. The dairy cow needs proteins for a variety of metabolic processes, including growth, lactation, and reproduction. Crude protein is a popular term used to describe the protein content in feed (CP).
All elements of bodily health, reproduction, and most critically milk production in the dairy business depend on protein. The protein that the cow consumes may be divided into two types: rumen degradable protein (RDP) and rumen undegradable protein (RUP).
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for any particular electron donor, the most free energy will be released when molecular oxygen serves as the final electron acceptor because . . . choose one:a. the concentration of oxygen gas is higher than the concentrations of most other feasible electron acceptors.b. molecular oxygen is a stronger oxidizing agent than most other available electron acceptors.c. molecular oxygen has a higher molecular weight than most other available electron acceptors.d. molecular oxygen donates electrons more readily than most other available electron acceptors.
For any particular electron donor the most free energy will be released when molecular oxygen serves as the electron acceptor because molecular oxygen is a stronger electron acceptor then most other available electron acceptors.
Oxygen is a highly electronegative due to its size. Its high electronegativity increases the electron affinity of oxygen to a very large extent.
At the end of the electron transport chain, most of the electron loses their energy when molecular oxygen serves as the electron acceptor.
Because at the end of the electron transport chain, water can easily form hydronium ion by combining readily with Hydrogen (H+).
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a student proposes the following lewis structure for the azide ion. assign a formal charge to each atom in the student's lewis structure. atom formal charge
Lewis structures are diagrams that illustrate the bonding between atoms in a molecule as well as any lone pairs of electrons that may exist. They are also known as Lewis dot formulae, Lewis dot structures, electron dot structures, or Lewis electron dot structures (LEDs). Lewis structures are diagrams that illustrate the bonding between atoms in a molecule as well as any lone pairs of electrons that may exist. They are also known as Lewis dot formulae, Lewis dot structures, electron dot structures, or Lewis electron dot structures (LEDs). A Lewis structure can represent any covalently attached molecule as well as coordination compounds. who proposed it in his 1916 article The Atom and the Molecule.
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could you give me 5 chemistry equations and an explanation of them solved chemistry equations please
go to Chemical Reactions (6 of 11) Quick Review 5 Types of Chemical Reactions by "step by step science" to get info
2 of 3
5. The mesosphere is found at 50 to 85 km above Earth's surface. (5 points)
Answer:
Mesosphere. This layer extends from around 31 miles (50 km) above the Earth's surface to 53 miles (85 km). The gases, including the oxygen molecules, continue to become denser as one descends. As such, temperatures increase as one descends rising to about 5°F (-15°C) near the bottom of this layer.
Explanation:
I hope this helpful♡♡ plssplss pa brainliest po ako
Which of the following is NOT a physical change? [Choose all that apply.]
Group of answer choices
melting ice cream
water evaporating from a puddle
making elephant toothpaste
roasting a marshmallow
mashing potatoes
burning a piece of paper
cutting wood
An object with a mass of 25.0 kg is traveling at 10.0 m/s. What is the object's kinetic energy?
Answer:
- Kinetic energy is the energy possessed by a moving body....so this energy is independent of the distance travelled since the body is still in motion.
- To calculate kinetic energy, the formula below applies;
[tex]{ \boxed{ \rm{ \: kinetic \: energy = \frac{1}{2} {mv}^{2} }}}[/tex]
m is the mass of the moving body in kgv is velocity attained by the moving body in ms-¹- From the values given;
[tex]{ \rm{kinetic \: energy = \frac{1}{2} \times 25 \times {10.0}^{2} }} \\ \\ = { \rm{25 \times 50}} \\ \\ ={ \: \: \underline{ \underline { \rm{ \: \: \: 1250 \: joules \: \: \: }}}}[/tex]
The kinetic energy of the object is 1250 Joules
Given:
Mass of the body (m) = 25 kg
Velocity of the body (v) = 10 m/s
Kinetic energy is the energy possessed by a body because of its motion.
The formula for kinetic energy is as follows :
Kinetic energy ( K.E) = [tex]1/2 ( mv^{2} )[/tex]
By substituting the values in the above equation we get:
Kinetic energy = 1/2 × 25 × [tex]10^{2}[/tex]
Kinetic energy = 1250 Joules
Hence the kinetic energy of the body travelling at 10 m/s is calculated as 1250 Joules
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What is the product of electrolysing potassium iodine solution
Answer:
The product is hydrogen.
Explanation:
what is cells ( life system )
The stages of a cell's lifecycle are prophase, prometaphase, metaphase, anaphase, and telophase.
The cell cycle is a sequence of events that arise in a cell as it develops and splits. Cells expend most of their period in the interphase, where they expand, replicate chromosomes, and prepare for cell division.
The cell then exits the interphase and experiences mitosis to conclude division. The consequential cells, known as daughter cells, enter the interphase and initiate a new cell cycle.
The cell cycle is the name a cell gives to the procedure by which it replicates and produces two new cells.
There are various phases in the cell process called G1, S, G2, and M. G1 is the staging in which the cell schedules to divide. To do this, the cell enters the S phase, where it copies all its DNA. So S stands for DNA synthesis. Once the DNA has been duplicated and a complete complementary set of all genetic material is general, the cell either enters the G2 phase of organizing and consolidating the genetic material or commences to condense the genetic material, preparing it for separation. The next step is M. M stands for mitosis. This is where the cell splits two duplicates of the genetic material into double daughter cells. At the end of the M phase, cell separation occurs, leaving two cells back and the cell cycle can form again.Learn more about the cell life system at
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What temperature is needed for 5 moles of helium at a pressure of 760 torr and volume of 650 mL
The temperature of 1.585 K is required for 5 moles of Helium at a pressure of 760 torrs and volume of 650 mL.
What is an ideal gas equation?The Ideal Gas Equation is the equation for hypothetical gases expressed mathematically by combining empirical and physical constants and is also known as the general gas equation.
The ideal gas equation can be represented for gas as:
PV = nRT
Where P is the pressure, V is the volume, n is the amount of ideal gas (in moles), R is the gas constant and T is the temperature (in Kelvin) of the ideal gas.
Given, the pressure of helium gas, P = 760 torr = 1 atm
The volume of helium gas = 650 ml = 0.65 L
The number of moles of helium gas, n = 5
The value of the gas constant, R = 0.082 L atm /K mol
Substitute the values in the ideal gas equation:
(1atm) × (0.65 L) = (5 mol) ×(0.0832 L atm /K mol) × T
T = 1.585 K
Therefore, the temperature of the helium gas at a given presurre and volume is equal to 1.585 K.
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Draw Conclusions Based on your analysis, which particle(s) determine(s) the identity of an element? Cite evidence from the table to support your conclusion.
The proton determines the identity of an element.
The number of protons in an atom determines the identity of that element. No element has the same number of protons in its atoms. The number of protons in an atom is called the atomic number of the element. Therefore, each element has a unique atomic number. The identity of an element is determined by the number of protons in it. You cannot change the number of protons without changing the ID of the element.
Adding a proton increases the atomic number by 1 and changes the identity of the element. You can create isotopes by changing the number of neutrons. The number of protons is very important in an atom as it gives it its identity. Atoms with only one proton are identified as hydrogen atoms. Atoms with 6 protons are identified as carbon atoms. The number of protons in an atom determines the identity of that element.
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A
A buffer solution is prepared by adding NaH₂PO4
to a solution of H3PO4 (phosphoric acid).
H3PO4 (aq) H+ (aq) + H₂PO4¯(aq)
What happens if KOH is added?
remains
the same
B
shifts to
reactants
shifts to
products
If KOH is added then the equilibrium will shift towards the products.
What is a buffer solution?
A weak acid and the conjugate base of the weak acid, or a weak base and the conjugate acid of the weak base, are combined to form the buffer solution, a water-based solvent solution.
They withstand being diluted or having modest amounts of acid or alkali added to them without changing their ph.
When a modest amount of a strong base is added here, the pH level should just slightly alter.
As a result, it ought to be moved to products.
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During the determination of molar mass of co2 experiment, suppose you measure the atmospheric pressure of the lab as 752 torr and the temperature of the lab as 21°c. If the vapor pressure of water is 18. 65 torr at 21°c, what is the pressure, in atm, of the co2 collected?.
The pressure of the CO₂ collected in atm is 0.965 atm.
We need to know about pressure to solve this problem. Pressure is unit that describe how much force applied on a surface area. It can be determined as
P = F / A
where P is pressure, F is force and A is area.
From the question above, we know that
Pvapor = 18.65 torr
P = 752 torr
From partial pressure, we can conclude that
P = Pco₂ + P vapor
752 = Pco₂ + 18.65
Pco₂ = 752 - 18.65
Pco₂ = 733.35 torr
Convert to atm
Pco₂ = 733.35 torr
Pco₂ = 733.35/760 atm
Pco₂ = 0.965 atm
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When the temperature of a gas decreases (at constant volume), what happens to the pressure in the container?
a: pressure stays the same.
b: pressure decreases.
c: pressure increases.
When the temperature of a gas decrease the pressure also decrease. That is option B.
What is temperature?Temperature is defined as the quantity that measures the degree of how hot or cold an object or medium is.
When the temperature of a medium increases there would be increase in the collision between the molecules that is found in the medium.
The increase in intermolecular collision leads to increase in pressure of the medium. Subsequently, when there is decrease in temperature, the pressure of the medium also falls.
Therefore, it can be said that the temperature of a gas decreases which causes the pressure to also decrease.
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hellpppppp pleaseeeee !!
Answer:
Addition of impurities (eg salt) raises the boiling point of water.
Please select the word from the list that best fits the definition
people who do not work for a formal business
The word that best fits the definition of "people who do not work for a formal business" is informal sector.
What is a formal definition?A formal definition can be defined as a process which typically involves providing all of the information (details) pertaining to a particular word or phrase, especially in a concise and standard format.
What is an informal sector?An informal sector can be defined as a word which is used to describe a group of workers that do not work for a formal business (regulated economic activities), including entrepreneurs, self-employed persons, and small family businesses.
In conclusion, some examples of persons working in the informal sector are car repairs, graphic designers, home renovations, etc.
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Phosphoric acid is delivered to a drinks factory in concentrated form. Why do you think the acid is not diluted before transporting it?
Please answer
The acid is transported in the concentrated form because it takes up a lesser volume.
What is dilution?The term dilution has to do with the process by which more water is added to the acid in order to reduce the strength of the acid. We have to note that the acid is stronger in the concentrated form because there is a very little amount of water that is found to be present in the concentrated acid as it is transported.
Let us note that when you dilute the acid, there would be an increase in the volume of the acid and this increase in the volume of the acid is going to raise the cost that is required in the transport of the acid.
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HELP!! WILL GIVE 100 points.
Which term describes this molecular shape?
A. Tetrahedral
B. Linear
C. Trigonal Planar
D. Bent
Answer:
Explanation:
A
an acid is a molecule/compound (i.e. hcl, ch3cooh), that when added to a solvent (water) will dissociate donating additional h (protons) to the resulting solution. therefore, an acid is a molecule that increases the hydrogen ion concentration of the solution. the molecule is an acid, whereas the solution containing the acid is acidic. some acids are considered strong and some are considered weak. what is the difference between a strong and weak acid? for an acid to be strong, when it is mixed in water the majority of the molecules will dissociate (very little is left intact), therefore it adds a large number of h into the solution, creating a strong acidic solution (ph
Since it dissociates almost entirely, HCl is a powerful acid.
In contrary, a weak acid like acetic acid (CH3COOH) does not dissociate well in water because it retains a large number of bound-up H+ ions.
Acetic acid splits into CH3COO, and H+.
In conclusion, the amount of free H+ ions discharged into solution increases with acid strength. The pH value for that acid is inversely correlated with the amount of free H+.
Because they allow other molecules to bind to H+ ions in solution, acids are frequently referred to as H+ ion donors.
Any acid that is entirely ionized in an aqueous solution is considered to be strong. When present in water, hydrogen chloride (HCl) totally ionizes to produce hydrogen and chloride ions.
Weak acid is one that ionizes very little in an aqueous solution. A very well-liked weak acid that is present in vinegar is acetic acid.
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a mixture of nitrogen and oxygen gases at a total pressure of 753 mm hg contains nitrogen at a partial pressure of 219 mm hg. if the gas mixture contains 1.60 grams of nitrogen, how many grams of oxygen are present? mass
If the gases are ideal and the end pressure is the same as the initial pressure, the partial pressures are PA=nART/(VA+VB) and PB=nBRT/(VA+VB), respectively.
How is pressure determined when two gases are combined?If the gases are ideal and the end pressure is the same as the initial pressure, the partial pressures are PA=nART/(VA+VB) and PB=nBRT/(VA+VB), respectively.
How is a gas's partial pressure in a mixture determined?There are two ways to calculate partial pressures: 1) To determine the individual pressure of each gas in a mixture, use PV = nRT. 2) Determine the proportion of the total pressure that may be assigned to each individual gas using the mole fraction of each gas.
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Which of the following is the correct Lewis formula for thionyl chloride (SOCl2)?
The correct lewis structural formula of the compound thionyl chloride from the structure above is one with two single bonds between sulphur and chlorine atom, one double bond between sulphur and oxygen, and one lone electron pair on the central atom.
The correct image is attached.
What is meant by the structure of lewis thionyl chloride?The structure of this substance simply refers to the structural composition of atoms and representing the substance.
In the context of the above question, thionyl chloride contains double bonds, single bond and also a lone pair electron.
This substance mentioned in the task above is used chlorinating agent.
Double bond is a covalent bond between two atoms involving four bonding electrons instead of two in a single bond.
So therefore, thionyl chloride lewis structure contains two single bond each between sulphur and chlorine atom and also two double bond between sulphur and oxygen atoms.
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can energy be released when matter changes? Can it be absorbed? Can a change in matter take place in which energy is neither released nor absorbed?
Answer:
Yes, energy can be released when matter changes. In physical changes, such as phase changes, energy is released when changing from a higher energy state to a lower energy state. An example of this is when gaseous water condenses into the liquid phase.
Yes, energy is always either released or absorbed during a chemical reaction. This is because all chemical reactions involve energy. In any chemical reaction, energy is required to break the bonds in reactions, and energy is released when new bonds form after the reaction.
And no energy cannot change in matter or take place in which energy is neither releasedreased nor absorbed.
Explanation:
1-Bromobutane reacts with water to form 1-butanol according to the following equation.
C4H9Br(aq) + 2 H2O(l) → C4H9OH(aq) + H3O+(aq) + Br−(aq)
The following is a proposed mechanism for the reaction.
C4H9Br(aq) → C4H9+(aq) + Br−(aq) slow
C4H9+(aq) + H2O(l) → C4H9OH2+(aq) fast
C4H9OH2+(aq) + H2O(l) → C4H9OH(aq) + H3O+(aq) fast
Determine the overall rate law for this proposed mechanism. (Rate expressions take the general form: rate = k . [A]a . [B]b.)
1-Bromobutane reacts with water to form 1-butanol according to the following equation overall rate law for this proposed mechanism is rate = k [C₄H₉Br]
The reaction intermediate in the chemical species that is formed in one elementary step and consumed in subsequent step and the slowest step in the reaction mechanism is rate determining step and the rate determining step limit the overall rate and therefore determines the rate law for the overall reaction
Here given reaction
C₄H₉Br(aq) + 2H₂O(l) → C₄H₉OH(aq) + H₃O⁺(aq) + Br⁻(aq)
And the following is a proposed mechanism for the reaction
C₄H₉Br(aq) → C₄H₉⁺(aq) + Br⁻(aq) slow
C₄H₉⁺(aq) + H₂O(l) → C₄H₉OH₂⁺(aq) fast
C₄H₉OH₂⁺(aq) + H₂O(l) → C₄H₉OH(aq) + H₃O⁺(aq) fast
So in that 1st step is the rate determining step means slow step
So rate expressions take the general form: rate = k . [A]a . [B]b
So given equation rate expressions is k [C₄H₉Br]
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what is atom charge?
Answer: the number of protons minus the number of electrons
Explanation:
what is the definition of electron orbital?
The electron orbit, is the path of an electron around the nucleus of an atom.
Explanation:
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write a balanced chemical equation based on the following description: the reaction of aluminum metal with aqueous sulfuric acid to form aqueous aluminum sulfate and hydrogen gas.
The balanced chemical equation of the reaction between aluminum metal with aqueous sulfuric acid to form aqueous aluminum sulfate and hydrogen gas is 2Al + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂.
What is a balanced chemical equation?A chemical equation is a symbolic representation of a chemical reaction where reactants are represented on the left, and products on the right.
According to this question, aluminum metal reacts with aqueous sulfuric acid to form aqueous aluminum sulfate and hydrogen gas.
This reaction will be balanced only if the atoms of each element on both sides of the equation are the same. The chemical reaction is as follows:
2Al + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂.
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In an experiment, a solution required 30. 05 g of nacl, 50. 0 g of , and 0. 4006 g of mgso4. Using the correct number of significant figures, what is the resulting mass?.
The total mass of the mixture is 80.5 g. The analysis of the calculation shows that there should be three significant figures in the end result.
This is an addition operation, and when dealing with addition and subtraction operations it is necessary to consider the last significant figure for each of the numbers. The result of the addition/subtraction should have the same last significant figure as the number with the leftmost (or highest) last significant figure. When applied to this calculation, the principle looks like this:
30.05 - the last significant figure is 5, and it is in the hundredths
50.0 - the last significant figure is 0, in the tenths
0.4006 - the last significant figure is 6, in the ten thousandths.
Of the three, the leftmost/highest significant figure is 0 in the tenths, so the end result should also have its last significant figure in the tenths.
30.05 g + 50.0 g + 0.4006 g = 80.4506 g, but we round up to the tenths, and because the numbers after 5 are greater than 0, we have to round up to reach the end result of 80.5 g
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In 1909, scientist ernest rutherford directed a stream of high speed alpha particles at a thin piece of gold foil. Some of the particles passed through, some were deflected, and some bounced straight back. This result caused rutherford to conclude that?.
1990, scientist Ernest Rutherford, directed a steam of alpha particles at a thin gold foil. He drew the conclusions about the Nucleus of the atom and the arrangement of the particles in atom.
He directed a stream of alpha particles towards a very thin gold foil. Some of the particles passed through, some were deflected, and some were bounced back straight. This result caused Rutherford to conclude that,
As the alpha particles were large particles, a large amount of mass was needed to deflect the alpha particles from it's path. He concluded that most of the mass of the atom is concentrate inside a small portion of the atom. He termed this portion as nucleus of the atom.
Some particles went non deflected, some were deflected by small angles and only few came back in a straight path. From this information he concluded that most of the portion of the atom is empty. This observation is indeed proven true in subsequent times.
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science time!!! please explain your answer also.
Answer:
A.
Explanation:
Radioactive atoms have unstable nuclei
consider the fourth period elements ca, mn, co, se, and kr. which of these atoms are paramagnetic? a) ca, mn, co b) mn, co, kr c) ca, kr, se d) mn, co, se e) ca, kr
Option (a) Ca, Mn, Co are paramagnetic elements in the fourth period of the periodic table due to unpaired electrons.
A substance's electron configuration can be used to assess if it has magnetic properties: The material is paramagnetic if any of its electrons are unpaired, and it is diamagnetic if all of its electrons are paired.
Materials with hindered electrons that are drawn to magnetic fields are considered to be paramagnetic. In the absence of a magnetic field, they become less magnetic. The magnetic moment of the material and, consequently, the paramagnetism, increase with the number of unpaired electrons.
[tex]Mn^{2+}[/tex] is the ion with the most paramagnetic behaviour because it has the most unpaired electrons when two electrons are lost.
In this instance, calcium is a paramagnetic element as well. This is an anomaly. Due to the ability of one of calcium's electrons in the S orbital to jump to the D orbital, the element is paramagnetic. Since calcium is in Period 4, its D orbital is unoccupied. D orbitals exist in elements with period 4. Thus, this provides that electron with a destination.
Three electrons are not paired in cobalt. It is hence paramagnetic. Three unpaired electrons are present in the outermost subshell.
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true or false: an object's color is dependent on the chemical composition of its matter, which determines the wavelegnth that is reflected
Answer:
true
Explanation:
The physical and chemical composition of matter determines which wavelength (or color) is reflected.