Locard’s exchange principle implies all of the following except a) Fibers can be transferred from one person to another. b) Blood spatter can be used to identify blood type. c) Cat hair can be transferred to your pants. d) Soil samples can be carried from the yard into your home.

Although the water molecule incorporates no internet electric powered fee, its 8 electrons aren't disbursed uniformly; there may be barely greater terrible fee (purple) on the oxygen cease of the molecule, and a compensating tremendous fee (green) on the hydrogen end.

Each hydrogen atom is covalently bonded to the oxygen through a shared pair of electrons. Oxygen additionally has unshared pairs of electrons. Thus there are four pairs of electrons surrounding the oxygen atom, pairs concerned in covalent bonds with hydrogen, and unshared pairs on the alternative aspect of the oxygen atom. The one and most effective electron ring across the nucleus of every hydrogen atom has most effective one electron.

Read more about water:

https://brainly.com/question/5060579

#SPJ4

The molarity of a KOH solution if 24.6 mL of it neutralizes 44.0 mL of a 0.211 M HCl would be 0.38 M.

KOH reacts with HCl to produce salt and water according to the following balanced equation:

[tex]KOH + HCl --- > KCl + H_2O[/tex]

From the balanced equation of reaction, the ratio of KOH to HCl is 1:1. In other words, for every 1 mol of KOH that reacts, 1 mole of HCl is required for complete neutralization.

Recall that, mole = molarity x volume.

Thus, the mole of 44.6 mL, 0.211 M HCl would be:

44.6/1000 x 0.211 = 0.0094 mol

Note: 1 mL = 0.001 L, thus, 44.6 mL would be equivalent to 44.6/1000 L

Going by the stoichiometric mole ratio which is 1:1, the equivalent mole of the KOH would also be 0.0094 mol.

Also, molarity = mol/volume

                       = 0.0094/0.0246

                       = 0.38 M

In other words, the molarity of the KOH solution needed to neutralize 44.0 mL, 0.211 M HCl would be 0.38 M.

More on stoichiometric problems can be found here: https://brainly.com/question/15047541

#SPJ1

In this reaction the oxidation number of hydrogen increases that is oxidation of hydrogen and the reduction of Copper occurs.

Any chemical process in which a participating chemical species' oxidation number changes is an oxidation-reduction reaction, often known as a redox reaction.

It is also clear that this is a reduction reaction because the oxidation number for copper decreases from +2 in Cu2+ to 0 in copper. Since oxidation involves the loss of electrons, 2H2O is oxidized when it loses 4 electrons to create O2.

The given reaction is :

CuO + H₂ = Cu + H₂O

in this reaction the oxidation number of hydrogen increases that is oxidation of hydrogen and the reduction of Cu occurs.

To know more about oxidation you may visit the link:

https://brainly.com/question/9496279

#SPJ4

In a 34S2-, the number of protons is 16, number of electrons is 18, and number of neutrons is 18.

Sulphur 34 is the stable isotope of sulfur. Sulfur has an atomic number of 16 and relative atomic mass of 34. Atomic number refers to the number of protons found in the nucleus of every atom of that element. Hence, the number of protons would be 16 for Sulphur 34. Atomic mass refers to number of protons and neutrons in the nucleus of the atom. Hence, the number of neutrons would be 18 for Sulfur 34.  The number of electrons in a neutral atom is equal to the number of protons. However, in the give ion, 34S2- which is negatively charged to negative two implying that it has two extra electrons, hence the number of electrons is 18.

Learn more about 34S2-:

https://brainly.com/question/18210355

#SPJ4

The membrane would become more adverse as a result.The membrane would become more negative if the membrane's potassium permeability increased.

Similar to this, the gradient in sodium ion concentration tends to encourage their entry into the cell.However, potassium ions are significantly more able to pass through the cell membrane than sodium ions are.As a result, sodium ions diffuse into the cytoplasm more slowly than potassium ions.

When sodium permeability rises to a point that sodium entrance outweighs potassium departure, depolarization turns into a self-sustaining process, or an action potential forms, the barrier cell membrane voltage is attained.

To know more about membrane potential visit:

https://brainly.com/question/14466527

#SPJ4

The Radioactive White-I label is attached to packages with extremely low levels of external radiation.

Excepted Packaging is used to carry radioactive materials that have extremely low amounts of radioactivity. Excepted packaging is permitted for small amounts of radioactive material that would represent a very minimal risk if discharged in an accident.

Type C packaging is an overpack for the transport of radioactive materials with no activity restrictions by any mode of transportation, including airplanes. The Type C package must retain its containment after impacting a target at 90 m/s (this is similar to a fall from a height of 450 m).

To learn more about Radioactive White-I  to refer:

https://brainly.com/question/23959901

#SPJ4

The oxidation number sulfur in H₂S is -2.

A compound's total number of oxidations must be zero.

The two hydrogen atoms in the chemical hydrogen sulfide, H₂S, each have an oxidation number of +1, making a total of +2. As a result, the compound's sulfur has an oxidation number of -2, and the total number of oxidations is 0.

Assume that the sulfur atom in H₂S has an oxidation number of x.

S be x.

Now,

2+x=0

⇒x=−2

The total number of electrons that an atom either receives or loses in order to create a chemical connection with another atom is known as the oxidation number, also known as the oxidation state.

Depending on whether we are taking into account the electronegativity of the atoms or not, these phrases can occasionally have a distinct meaning. Coordination chemistry commonly makes use of the phrase "oxidation number."

In contrast to the oxidation state, which indicates how oxidised an atom is in a molecule, the oxidation number describes the charge that the core metal atom will retain once all ligands have been removed.

To know more about oxidation number:

https://brainly.com/question/13182308

#SPJ4

Use the grams to moles formula to calculate the number of moles, n, of a substance with a given mass, m, (in grams) accurately. n = m / M, where M is the substance's molar mass

The number of atoms, molecules, or ions (or any other entity) in a substance is measured in gram moles. 6.022 x 1023 is what it is in all entities. It is equivalent to 6.022 x 1023 molecules of H 2 S or, in the case of an atom, 6.022 x 1023 atoms (in case of a molecule )

In chemistry, a mole, sometimes spelled mol, is a common scientific measurement unit for huge amounts of little things.

To know more about moles visit:-

https://brainly.com/question/26416088

#SPJ4

K2SO4 has the most ions out of the options, which means its freezing point will degrade the most. A collective attribute that depends on the quantity of particles is the depression in freezing point.

How do melting and freezing points differ?

The temperature at which a material becomes liquid or solid is known as the melting or freezing point of that substance. Various solids have various melting points.

What in chemistry is the freezing point?

Definition of the freezing point The temperature at which a liquid, under atmospheric pressure, transitions from a liquid to a solid is known as the freezing point. Both the solid and liquid states coexist at the freezing point because these two phases, liquid and solid, are in balance there.

To know more about freezing point visit:

https://brainly.com/question/1550397

#SPJ4

The limiting reactant is the one with the least mole ratio.

It is limiting to use the reactant with the smallest mole ratio. Magnesium is the limiting reactant, with a predicted stoichiometric mole ratio of 4.12.

By dividing the number of moles of each reactant by its stoichiometric coefficient in the balanced chemical equation, you may determine which reactant is the limiting one. Calculate the maximum number of moles of product that can be produced from the limiting reactant using mole ratios.

4AsCl3+6H2O——> As406+12HCl

As4O6 + 12HCl --> 4AsCl3 + 6H2O

Balance: As4O6 + Hal --> AsCl3 + H2O

AsCl3 + H2O -->As4O6 + Hal

To learn more about limiting reactant  refer to:

https://brainly.com/question/26905271

#SPJ1

Answer:

The reaction is nutride-cullic and sees all math about our lives.

Explanation:

N-Chloromethylamine is the name given to the molecule. The provided molecule contains the highly electronegative components nitrogen and chlorine, as can be seen. Hydrogen bonding is not visible because of the enormous size of chlorine, whereas it is visible because of the lower size of nitrogen.

Because it is too big, the chlorine atom in chloromethane cannot form hydrogen bonds. In chloromethane, the hydrogen atoms are not sufficiently electropositive and are not linked to an electronegative atom. As a result, chloromethane and water molecules are unable to establish hydrogen bonds.

An abundant biopolymer called chitin stabilises the exoskeleton of insects and gives plants their shape. These intermolecular connections, which connect the polymer strands in a complicated network of hydrogen bonds, are the source of the material's macroscopic characteristics.

Learn more about hydrogen bonds here:

https://brainly.com/question/21054466

#SPJ4

To react with Ethane, we need 84 moles of oxygen are required.

The reaction is depicted as follows:

2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O

According to the reaction, the mole ratio of ethane (C₂H₆) to oxygen (O₂) is 2:7.

We have to find the moles of oxygen.

Given that 24 moles of ethane.

24 x 7/2

= 84

As a result, it takes 84 moles of oxygen to react with 24 moles of ethane.

To learn more about moles refer to :

https://brainly.com/question/28037816

#SPJ1

a. 2 Al + Fe₂O3-

→2 Fe + Al₂O3

b. 2 Ag+S →→→→ Ag₂S

c. CaCO3 → CaO + CO,

d. 2 NO + O₂ → 2 NO₂

-

When measured at the same temperature and pressure, the molar volumes of all gases are the same. Different gases will have different molar masses, though. This implies that the densities of various gases will vary (different masses per unit volume).

The volume occupied by one mole of a chemical element or chemical compound at standard temperature and pressure (STP) is known as the molar volume (Vm). By dividing the mass density () by the molar mass (M), it can be calculated. One mole of any gas has a fixed volume when it is at a particular temperature and pressure.

Learn more about the density

https://brainly.com/question/1354972

#SPJ4

A solid's volume can be determined. Solids are difficult to compress. Solids don't take on the shape of their container; instead, they have a distinct shape.

Structure stiffness and resistance to changes in volume or shape define solids. It is impossible for a solid object to flow into the shape of its container.

Has a solid shape that can not shift readily and can change shape to fit a container is composed of ions and electrons that are in motion. is more easily squeezed than other states has particles that can move but not jiggle has particles with some degree of mobility will increase until it fully fills a closed container.

To know more about volume visit:-

https://brainly.com/question/13338592

#SPJ4

a) SbF4+ Shape: tetrahedral shape, Hybridization: sp3 hybridization, Ideal bond angle(s): 109.5,  b) AsC14, Shape: seesaw shape, Hybridization:sp3d hybridization Ideal bond angle(s): 120, 90,180 , C) Se042, Shape: tetrahedral shape, Hybridization:sp3 hybridization, Ideal bond angle(s): 109.5, Deviation from ideal angle(s): < 109.5, d) BiF52-, Shape:square pyramidal shape, Hybridization:sp3d2 hybridization, Ideal bond angle(s): 90 Deviation from ideal angle(s): < 90, (e) BrO3-, Shape:trigonal pyramidal shape, Hybridization:sp3 hybridization, Ideal bond angle(s): bond angle 109.5 Deviation from ideal angle(s): bond angle <109.5

The process of hybridization known as sp3 hybridization involves the mixing and recasting of the 1s and 3p orbitals of the same element to create new hybrid orbitals with the same energy, symmetry, and fixed orientation in space. The molecule of methane is one example.  One 2s orbital and three 2p orbitals are mixed to produce four hybrid orbitals with similar properties, which is referred to as "sp3 hybridization." The sp3 hybridization of an atom requires the presence of three p orbitals in addition to one s orbital.

Learn more about hybridization here;

https://brainly.com/question/14140731

#SPJ4

The number of molecules in the breath: 2.71 × 10²² molecules

PV = nRT denotes the ideal gas equation. In this equation. P stands for the ideal gas's pressure, V for its volume, n for the total amount of ideal gas expressed in moles, R for the universal gas constant, and T for temperature in this equation.

Given that:

Pressure (P) = 740.0 torr

= (740.0/760) atm

= 0.9737 atm

Volume (V) = 1.05 L

Temperature (T) = 3.7°C

= (3.7+273) K

= 276.7 K

find the number of moles using:

P×V = n×R×T

0.9737 atm × 1.05 L = n × 0.08206 atm.L/mol.K × 276.7 K

or, n = 4.5 × 10⁻² mol

Thus, the number of molecules = number of mol × Avogadro’s number

= 4.5 × 10⁻² mol × (6.023 × 10²³) molecules/mol

= 2.71 × 10²² molecules

Answer:  2.71 × 10²² molecules.

To know more about molecules refer to:

https://brainly.com/question/26044300

#SPJ1

Answer: If both parents are heterozygous for freckles, then they each have a genotype of Ff. This means that each parent has one dominant allele for freckles and one recessive allele for no freckles. When these two parents mate, their offspring will have a genotype that is a combination of the genotypes of the two parents.

Explanation:

There are four possible combinations of genotypes that the offspring could have: FF, Ff, ff, and Ff. The first three genotypes are possible because each parent has a 50% chance of passing on each of their two alleles to their offspring. The fourth genotype, Ff, is possible because the offspring could inherit one F allele from one parent and one f allele from the other parent.

The genotype ratios for the offspring of these two heterozygous parents would be 1:2:1. This means that there is a 25% chance that an offspring will have the genotype FF, a 50% chance that it will have the genotype Ff, and a 25% chance that it will have the genotype ff.

The phenotype ratios for the offspring of these two heterozygous parents would be 3:1. This means that 75% of the offspring will have freckles, and 25% of the offspring will not have freckles. This is because the genotypes FF and Ff both result in the freckles phenotype, while the genotype ff results in the no freckles phenotype

C. The absorption of a free-moving neutron by the atom's nucleus

In a nuclear fission reaction, the nucleus of an atom becomes unstable when it absorbs a free-moving neutron. This can cause the nucleus to break apart into two or smaller fragments, releasing a large amount of energy in the process. Other factors, such as the temperature and pressure of the surrounding environment, can also affect the stability of the nucleus, but the absorption of a neutron is typically the primary cause of instability in a nuclear fission reaction. Control rods, which are used to regulate the rate of the reaction, do not directly cause the nucleus to become unstable, and the absorption of protons by the nucleus is not typically a factor in nuclear fission reactions.

900J energy is required to raise the temperature of from 273K to 298K.

Knowing the mass of the substance, the change in the system's temperature, and the substance's specific heat capacity will allow you to compute the quantity of heat transmitted in a given system.

Given in the question:

Specific heat capacity, c = 0.24J/[tex]g^{0}[/tex]c

Mass, m = 150.0g

initial temperature, [tex]T_{1}[/tex] = 273K = [tex]0^{0}C[/tex]

Final temperature, [tex]T_{2}[/tex] = 298K = [tex]25^{0}C[/tex]

The heat absorbed (q) by the system is calculated as follows:

=> [tex]q = cm(T_{2}-T_{1})[/tex]

=> [tex]q = 0.24J/g^{0}C \times 150.0g(25^{0}C-0^{0}C)[/tex]

=> [tex]q = 900J[/tex]

Learn more about specific heat capacity:

brainly.com/question/29766819

#SPJ4

FeCl3 is a Lewis acid because it has an empty d orbital that can accept electrons from a Lewis base. The empty d orbital allows FeCl3 to form a coordinate covalent bond with a Lewis base, forming a Lewis acid-base complex. This empty d orbital is not filled by the three chloride ions, making it an excellent Lewis acid.

In the Lewis theory of acid-base reactions, bases donate electron pairs and acids gain electron pairs. Therefore, a Lewis acid is any substance that: B. H+ ions that can accept unbonded electron pairs. In other words, Lewis acids are electron pair acceptors. A Lewis base is a substance that: OH ions that can donate unbonded electron pairs. Therefore, Lewis bases are electron pair donors.

An advantage of Lewis theory is how it complements models of redox reactions. Redox reactions involve the transfer of electrons from one atom to another with a net change in the oxidation number of one or more atoms.

Learn more about Lewis Acid:

https://brainly.com/question/15570523

#SPJ4

The electronic configuration of cobalt 27 is 1s2 2s2 2p6 3s2 3p6 4s2 3d7  

That is here. 1s 2s. 2p. 3s. 3P. 4S, 3d. So, let's plot this against energy, so here it is lowest is 1, so it is 1 as 2 or later we can denote the electrons here. It is 2s the. It is 2p, 3s, there will be 3p, and here is 3 d, and here it is for p like this, it will go and let's write the electrons here. It is 1s2. So it is 1s2 2s2. Then 2p6, so here will be 3s2, then 3p6, then 4s2, then 3d7,

To know more about electronic configuration click here

https://brainly.com/question/26084288

#SPJ4

Therefore, 800ml of a 1.25m aqueous ammonia solution contains 1000moles of ammonia.

Ammonium hydroxide appears as an aqueous solution with no color. Ammonia concentrations might reach as high as 30%. The eyes become irritated by the solution's ammonia fumes. Ammonium hydroxide is created when ammonia is dissolved in water. A solution of ammonia in water is referred to as ammonia solution, ammonia water, ammonium hydroxide, aqua ammonia, aqueous ammonia, or ammonia. The symbols for it are NH3 and NH4.

Making an Aqueous Ammonia Solution: Ammonia is dissolved in water to create an aqueous solution. Ammonia dissolves in water at a relatively rapid pace, making water back suction a possibility. Rubber tubing is used to link a funnel to the delivery tube's exterior end in order to prevent this.

Ammonia produced by industry is used as fertilizer in agriculture to the tune of 80%. In addition to these uses, ammonia is made into plastics, explosives, textiles, pesticides, dyes, and other chemicals. Additionally, it is used to clean water sources.

Concentration (C) = number of moles (n) / volume (v)

number of moles (n) = concentration × volume

Concentration = 1.25M

Volume =800 L = 800dm³

n = 1.25 × 800

n = 1000 moles

There are 1000 moles of ammonia in the solution.

To know more about Aqueous Ammonia Solution visit:

https://brainly.com/question/14530753

#SPJ4

The correct name for HF (aq) is Hydrofluoric acid which means option b is the correct choice.

Hydrofluoric acid is a solution of hydrogen fluoride in water. Solutions of HF are colorless, acidic and distinctly corrosive. It is used to make maximum fluorine-containing compounds; examples consist of the usually used pharmaceutical antidepressant medicine fluoxetine and the fabric PTFE. The nature of this acid is highly corrosive due the hydrogen ions of the acid and it is toxic in nature due to the presence of flouride ions. Hydrofluoric acid or Hydrogen Fluoride (HF) is deadly if inhaled, if swallowed, or in touch with pores and skin. It reasons intense pores and skin burns and eye damage.

Therefore, option b is the correct choice.

To learn more about acid check the link below:

https://brainly.com/question/25148363

#SPJ4

The formal concentration of butanoic acid in water phase = 0.060 M.

The formal concentration of butanoic acid in benzene phase = 0.0157 M.

given that :

volume of aqueous phase = 100 mL

volume of benzene = 25 mL

pH = 4

partition coefficient = 3

pH = - log [H⁺]

[H⁺]  =  10⁻⁴ M

distribution coefficient is given as :

D = K [H⁺] /  [H⁺] + Ka

Ka for the butanoic acid is 1.52 × 10⁻⁵

D = 93 × 10⁻⁴ / 10⁻⁴ +) 1.52 × 10⁻⁵

D = 2.60

fraction of the butanoic acid in water phase :

q = v1 / v1 + Dv2

q = 100 / 165

q = 0.60

concentration of the water phase = 0.60 × 0.10 M

                                                        = 0.060 M

moles of benzoic acid = (0.10 × 100) / 100

                                     = 0.010 mol

mole fraction fraction of benzene phase :

1 - 0.060 = 0.394 mol

moles in benzene phase = 0.394 × 0.01 = 0.0039 mol

concentration = 0.0039 / 0.025

                       = 0.157 M

To learn more about butanoic acid here

https://brainly.com/question/9173074

#SPJ4

For such excited state 1s22s22p13s1, the greatest wavelength is necessary. The Bohr model proposes that energy is absorbed by an atom, which causes it to jump from one energy level to another.

A structural representation of an atom is the Bohr Model. Niels Bohr, a physicist, put forth the hypothesis in 1913. According to this idea, electrons orbit the atomic nucleus within an atom in discrete circular shells. The atomic planetary model is another name for the model.

Answer: 1) Elections move in circular, constant-energy orbits around the nucleus. 2) The only stable electron orbits are those in which h/2Pi is a multiple of the electron's angular momentum. 3) An electron moving of one orbital to another causes a photon to be either emitted or absorbed.

To know more about Bohr model  visit:

https://brainly.com/question/3964366

#SPJ4

In that reaction, reduction has taken place when the oxidation number is reduced, resulting in Cl2 becoming Cl.

Oxidation is the process in which a reactant oxidises during a reaction. Reduction is the term used to describe a reaction in which a reactant picks up electrons. This happens frequently when acid and metals interact. Oxidation is the process in which a reactant oxidises during a reaction.

Oxidation occurs when an element, peptide, other ion loses one or maybe more electrons during one chemical reaction. While oxidation is happening, the oxidation status of the chemical species rises. Oxygen is not always required for oxidation to occur. The expression was first used to describe how oxygen caused significant ion transfer during a process.

To know more about oxidation visit:

https://brainly.com/question/16976470

#SPJ4

The substance in the diagram that would have a net movement out of the cell is Water.

The substance that will have to have a net movement out of the cell would need to first be in the cell. The only substances in the cell are water, starch, and glucose.

Water will be the most likely substance to have a net movement out of the cell thanks to the process of osmosis which allows water molecules to move from an area of high concentration to an area of low concentration across a semi - permeable membrane. This happens until the concentration gradient is the same across the semi - permeable membrane.

The water in the cell is 90 % which means it is 5 % more than the 85 % water in the beaker. Water would therefore move out of the cell in a net movement until the concentration is the same in the beaker and the cell.

Find out more on movement out of cells at https://brainly.com/question/6843437

#SPJ1