is released in the brain during physical contact, which may help facilitate feelings of attraction and bonding.

Answer:

see in the science book

Explanation:

see in the science book

2PbI_4+4/2CrCl_2—»2PbCl_2+4CrI_2

On reactant side

On product side

Hence it's balanced

Note:-

The reaction or the Equation is not possible in reality

Answer:

The dependent variable is the variable being tested and measured in an experiment, and is 'dependent' on the independent variable.

Answer:

variable   whose value depends on that of another Explanation:

Answer:

Explanation:

C - Mix ice with water until equilibrium is reached but some ice remains that is no longer melting.

Answer:

eukaryotic

Explanation:

prokaryotic organisms are single-cellular (bacteria)

eukaryotic organisms are multi-cellular (animals, plants, etc.)

Sodium chloride is a compound which does not  have a covalent structure.

Compound is defined as a chemical substance made up of identical molecules containing atoms from more than one type of chemical element.

Molecule consisting atoms of only one element is not called compound.It is transformed into new substances during chemical reactions. There are four major types of compounds depending on chemical bonding present in them.They are:

1)Molecular compounds where in atoms are joined by covalent bonds.

2) ionic compounds where atoms are joined by ionic bond.

3)Inter-metallic compounds where atoms are held by metallic bonds

4) co-ordination complexes where atoms are held by co-ordinate bonds.

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The peptide bond between which two amino acid residues is cleaved by HIV protease will be "Phenylalanine Proline".

Whenever the carboxyl group with one molecule combines at all with  the amino group of the other molecule, a molecule of water is released, and a peptide bond is created among the two molecules (\(H_{2} O\))

The HIV protease breaks down large precursor proteins towards smaller ones. A new HIV virus is created when these smaller proteins interact with both the genetic material of HIV. HIV cannot replicate when protease is blocked by protease inhibitors (PIs).

HIV protease breaks down freshly created polyproteins specifically, Gag as well as Gag-Pol at nine cleavage sites to produce the mature protein components of such an HIV virion, the infectious version of the virus beyond the host cell. HIV virions do not spread disease in the absence of an efficient HIV protease.

Therefore, the peptide bond between which two amino acid residues is cleaved by HIV protease will be "Phenylalanine Proline".

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Answer:

2.5

Explanation:

The alkyl group (R) attached to the chiral α-carbon of  L-threonine amino acid is H₃C-CH-OH. The Fischer projection of L-threonine is attached below.

Amino acids can be defined as organic compounds that contain both amino and carboxylic acid functional groups. Most amino acids are α-amino acids, which comprise proteins.

Amino acids are divided according to the positions of the functional groups, such as alpha- (α-), beta- (β-), gamma- (γ-), or delta- (δ-) amino acids. As proteins, amino acids form 2nd largest component of human muscles and tissues.

In the structure of amino acids, R denotes a side chain attached to each amino acid. The carbon atom attached to the carboxyl group (-COO) is called the α–carbon. Amino acids with an amino group (-NH₂) attached directly to the alpha-carbon is known as α-amino acids.

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The characteristics of a double replacement reaction as well as example to depict it are clearly explained below.

A double-replacement reaction is one that occurs when parts of two ionic compounds are exchanged thereby making two new compounds.

A characteristic of a double-replacement equation is that there are two compounds as reactants and two different compounds as products.

A precipitate forms in a double-replacement reaction when the cations from one of the reactants combine with the anions from the other reactant to form an insoluble ionic compound.

An example of a double displacement reaction is;

CuCl₂(aq) + 2AgNO₃(aq) → Cu(NO₃)₂(aq) + 2AgCl(s)

Due to the fact that a precipitate is formed, the double replacement reaction is also called a precipitation reaction.

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Fluorine atoms = 1.517 x 10²³

The mole is the number of particles contained in a substance

1 mol = 6.02.10²³

Moles can also be determined from the amount of substance mass and its molar mass

\(\large{\boxed{\boxed{\bold{mol=\frac{mass}{molar\:mass}}}}\)

Proust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison so that the compound has a fixed composition of elements

\(\tt mass~F=\dfrac{4.Ar~F}{MW~C_2F_4}\times mass~C_2F_4\\\\mass~F=\dfrac{4.19}{100}\times 6.3=4.788~gr\)

\(\tt =\dfrac{4.788}{19}=0.252\)

\(\tt 0.252\times 6.02\times 10^{23}=1.517\times 10^{23}\)

Answer:

Water purification is the process of removing undesirable chemicals, biological contaminants, suspended solids and gases from contaminated water. The goal is to produce water fit for a specific purpose. Most water is purified for human consumption (drinking water), but water purification may also be designed for a variety of other purposes, including meeting the requirements of medical, pharmacological, chemical and industrial applications. In general the methods used include physical processes such as filtration,sedimentation, and distillation, biological processes such as slow sand filters or biologically active carbon, chemical processes such asflocculation and chlorination and the use of electromagnetic radiation such as ultraviolet light.

Extreme lack or loss of water may lead to dehydration of the body and other health complications. For this reason, governments ensure that citizens have access to clean and safe water for domestic use. Clean water is essential in ensuring that no pathogens or impurities are ingested by people, either through direct drinking or through food.

To attain these standards of water, purification is important. Water purification involves physical and chemical processes, which are carried out stepwise to ensure the water is safe and free from any harm. This directional process essay synthesizes the steps, which have to be followed to achieve this task.

In essence, water purification denotes the process used to free water from impurities like bacteria and contaminants. Since the process is aimed at eliminating all the impurities present in the water, it is necessary to apply chemical and physical methods of separation in an orderly manner.

Explanation:

Answer:8

in the respiratory system

a.

Explanation:

Bromine is a better leaving group than chlorine because it is larger and less electronegative than chlorine. This means that the bond between bromine and the carbon in an organic molecule is weaker and more easily broken than the bond between chlorine and carbon.

In addition, bromine is polarizable due to its larger size, which means that it can more easily accommodate an unfavorable charge distribution during bond formation. This reduces the energy required for the bond to break and the leaving group to depart.

Therefore, organic reactions that involve bromine as a leaving group tend to proceed more easily and quickly than those involving chlorine as a leaving group.

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During this procedure, the blue (CuSO 4) solution turns into a colorless ZnSO 4 solutions. balanced response. Copper sulfate is produced when Zn (s) and CuSO 4 (aq) combine. Sulfated zinc.

The number of variables on either side of a formula is equal in a balanced action. A chemical reaction's atoms, ions, all molecules are represented by a number called the stoichiometric ratio, that balances exact amounts of each element on the product and reactant sides of equation.

One such equation describes an element's total charge and number of atoms in both the products and reactants of a reaction. In other words, the mass and charge of both sides of a reaction are equal.

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Answer:

the answer is copper :)

Explanation:

Answer:

To change a solid into a liquid, or a liquid into a gas, requires heat energy. This heat energy allows the change of state to happen, and the temperature remains constant during the process.

Answer:

Lithium, sodium, potassium, rubidium, and cesium are all part of a group called the alkali metals. ... They are all soft metals in elemental form and they all react violently with water. They react so strongly because they all readily lose an electron to form the +1 cation very easily.

Answer:

Land is considered as an important resource as it provides habitation to a wide variety of flora and fauna. It is also used by human beings for various purposes such as agriculture, forestry, mining, building houses and roads, and setting up industries.

Answer:

Convert the mass of each element to moles using the molar mass from the periodic table. Divide each mole value by the smallest number of moles calculated. Round to the nearest whole number. This is the mole ratio of the elements and is represented by subscripts in the empirical formula.

Explanation:

The result is the molecular formula

The statement "It tells whether products or reactants are favored at equilibrium" is an information given by equilibrium constant.

In chemistry, the equilibrium constant, denoted as K, embodies a mathematical construct that establishes a connection between the concentrations of reactants and products in a chemical equilibrium, all under a specific temperature. This constant provides valuable insights into the comparative stability of the products and reactants at the equilibrium state.

Expressed as a product of concentrations, each to the power of its respective stoichiometric coefficient, the equilibrium constant signifies the interplay between the concentrations of the products and reactants.

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Complete question:

What information does an equilibrium constant give?

O A. It tells how long it takes the reaction to reach equilibrium.

B. It tells whether products or reactants are favored at equilibrium.

C. It tells how much energy is required for the reaction to happen.

O D. It tells what the rate constant of the reaction is at equilibrium.

Answer: solid liquid and gas

Explanation: the diffrent types of objects/things

Answer:

Check this.

THANK YOU ..

75 milliliters of stock solution are needed to make 100.0 mL of 0.750 M.

What is the stock solution?

To make a stock solution, weigh out the proper amount of a pure solid or measure out the proper amount of a pure liquid, put it in the right flask, and then dilute it to the desired volume.

NaCl stock solution is, S1 = 1.00 M.

NaCl is, S2 = 0.750 M.

NaCl is, V2 = 100 mL.

Consider, the required volume of NaCl stock solution to make the desired solution is, V1

According to the dilution law,

S1V1 = S2V2

Where, S1 = Initial strength, V1 = Initial volume, S2 = Final strength and V2 = Final volume.

So, 1.00 M *V1 = 0.750 M * 100 mL

V1 = ( 0.750 M * 100 mL) / 1.00 M = 75 mL

Therefore, 75 milliliters of stock solution are needed to make 100.0 mL of 0.750 M.

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Answer:

Explanation:

The momentum of an object can be found by using the formula

momentum = mass × velocity

From the question we have

momentum = 45 × 1544

We have the final answer as

Hope this helps you

Answer:

69,480 kg. m/s

have a nice day!

Explanation:

Answer:

2 oxygen atoms make oxygen gas

A molecule of oxygen gas is composed of two oxygen atoms chemically bonded together. The symbol for oxygen is "O," and the atomic number is 8, indicating that each oxygen atom has 8 protons in its nucleus.

A covalent bond is a type of chemical bond that occurs between two atoms when they share one or more pairs of electrons. It is a strong bond that holds atoms together to form molecules.

In a covalent bond, atoms share electrons in order to achieve a more stable electron configuration, typically by filling their outermost energy levels (valence shells). By sharing electrons, both atoms involved in the bond can achieve a more stable configuration, similar to the noble gas configuration.

In an oxygen gas molecule, the two oxygen atoms are held together by a covalent bond. Covalent bonds involve the sharing of electron pairs between atoms. In the case of oxygen gas, each oxygen atom shares two electrons with the other oxygen atom, resulting in a stable molecule.

Therefore, a molecule of oxygen gas is made up of two oxygen atoms (O) bonded together by a covalent bond.

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Anticholinesterases will increase the usual time of acetylcholine in the synapse. Rebinding can then connect the transmitter to nicotinic receptors. It allows acetylcholine the stronger advantage over the neuromuscular blocking agent.

According to the question the letter C represents the transition from liquid to gas.

Transition is the process of moving or changing from one state, condition, or stage to another. It is a natural part of life, and it is something that everyone experiences. Transition involves change, and it can be both positive and negative. Transition can involve physical, mental, and emotional changes, and it can also involve changes in relationships, career, or lifestyle. Transition can be a difficult process, but it can also be an opportunity for growth and development. Transition can involve changes in any aspect of life, and it can facilitate positive outcomes when managed properly. Transition can involve a range of emotions, including fear, anxiety, excitement, and hope.

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