Why do we keep the volume of rinses small in the recrystallization procedure?
We keep the volume of the rinses small in the recrystallization procedure to remove any impurities that are in the solvent that are on the surface of the crystals.

Answers

Answer 1

Small volumes of solvents are used to rinse the solid product in the recrystallization procedure in order to remove impurities.

Recrystallization procedure

In the recrystallization procedure, small volumes of solvents are used to rinse the solid product to remove impurities. This is done to prevent the loss of the desired product, as larger volumes of solvent can cause the product to dissolve and be lost.

The small volume of solvent is also important for effective removal of impurities, as it allows for better control of the washing process and ensures that impurities are washed away without dissolving the product.

Thus, keeping the volume of rinses small is a key step in obtaining a pure, high-quality product in the recrystallization procedure.

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Related Questions

What happens when you titrate a weak acid with a strong base?

Answers

When we titrate a weak acid with a strong base, there is a sharp increase in pH at the beginning of the titration.

During the titration of a weak acid with a strong base, very often there is a sharp increase in pH at the beginning of the titration. This happens because the anion of the weak acid becomes a common ion which reduces the ionization of the acid. Soon after the sharp increase at the beginning of the titration the curve only changes gradually. This is caused because the solution is only acting as a buffer.

General titration of an acid with a strong base:

Basically, at equivalence point, the only species which is present in the solution are the neutral ions (the cation from the strong base and the anion from the strong acid) and water.

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Find the acceleration rate if the force is 200 N and the mass of an object is 150 kg.

Answers

Answer:

Explanation:

F=ma

200=150*a

a=5/4=1.25m/s^2

What is the atomic number of Te 2?

Answers

The atomic number of Te₂ is 52.

Te₂ refers to a Te atom that has formed a diatomic molecule by sharing two electrons with another Te atom. The atomic number of Te₂ is 52, since the molecule contains two Te atoms with a combined atomic number of 104.

Tellurium is a rare, silvery-white, brittle metalloid that is chemically related to selenium and sulfur. Tellurium is not very abundant in the Earth's crust, with an estimated concentration of only 0.001 parts per million.

Tellurium has a variety of uses in industry and technology, including as a component of alloys used in the production of steel, copper, and lead, as a semiconductor material in electronic devices, and as a coloring agent in ceramics and glass. It is also used in some types of solar cells, as well as in the production of blasting caps and other explosives.

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How many resonance structures can O3 make?

Answers

O3 is called as Ozone. There are two resonance structure in O3 that contribute equally to the overall hybrid structure of the molecule.

Resonance structures can be drawn in different ways. In resonance structures, one can only change the location of bonds and electron pairs and not the amount or type of atoms. Ozone is an inorganic molecule with the formula O₃. Ozone is a pale blue gas with a distinctively pungent smell. It is an allotrope of oxygen that is much less stable than the diatomic allotrope O₂. That breaks down in the lower atmosphere to O₂. It  is used in many industries. Ozone is used for purifying air and drinking water in industrial waste treatment, oils, bleaching and waxes and to make other chemicals. Two resonance structures can be drawn for ozone. The location of the double bond changes in the structure. Both the resonance structures of ozone are stable.

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How many p-orbitals are occupied in a K atom?

Answers

The number of the p-orbitals are occupied in a K atom is six p orbitals.

Potassium belongs to an alkali metal with the atomic number is 19 and the atomic mass of 39. The potassium is placed in the first group and the fourth period. The electronic configuration of the potassium is as :

Electronic configuration of potassium = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹

The region or the space around the nucleus in which the probability of the finding of the electron is called as the orbitals. From the electronic configuration, it is clear that 2p and 3p sublevels are the entirely occupied because the each of them has the six electrons.

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What is dinitrogen heptoxide formula?

Answers

The formula of the compound dinitrogen heptoxide is N₂O₅.

One of the binary nitrogen oxides is the substance Dinitrogen heptoxide.

A compound creates a new product by combining one or more additional ingredients. The mass ratio required to produce that product is equivalent to the combination of two substances or components. It is tightly connected, and they are equivalent in every manner to create a combination.

Dinitrogen heptoxide has the chemical formula N₂O₅.

This molecule has two nitrogen atoms and five oxygen atoms, as can be seen, and its name, Dinitrogen heptoxide, must reflect this

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what is zinc's atomic number?

Answers

The atomic number of zinc is 30.

Generally, the atomic number is simply defined as the number of protons present in an atom. Due to this reason, atomic number is also sometimes known as the proton number. During the calculations, atomic number is usually denoted by the capital letter Z. The symbol Z is derived from the a German word zahl, which means number of numeral, or atomzahl, which is a more modern word which means atomic number.

The atomic number is basically the number of protons present in the nucleus of an atom. The number of protons are used to define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present in the atom, identity depends upon the number of protons.)

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Pushing
13N
Pulling
16N
Net Force =

Answers

Bigger number - smaller number = net force. 16N - 13N = net force of 3N is pulled

which element has the lowest 1st ionization energy?

Answers

Bi is the element that has the lowest 1st ionization energy. Therefore, the correct option is option D.

The energy needed to ionise an atom or an ion in its gaseous form is equal to the energy needed to remove an electron from it. A positive ion is created when an atom loses one of its electrons, creating a species that is positively charged. The ionisation energy is represented in kilojoules per mole (kJ/mol) or electron volts (eV), which are common measures of energy per mole.

The five alternatives for elements are all members of the same group. As the group grows and the valence electrons are less tightly bonded, the value of ionisation energy (IE) decreases. Since Bi is the last element, it has the lowest IE in this scenario.

Therefore, the correct option is option D.

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Your question is incomplete but most probably your full question was,  

which element has the lowest 1st ionization energy?

A. As

B. P

C. N

D.Bi

E. Sb

Carbon has four electrons in its valence shell. What types of covalent bonds is it capable of forming?.

Answers

All the elements in the second row, carbon has the most outer shell electrons that can form covalent bonds (four).

Does carbon has four electrons capable of forming covalent bonds?

Additionally, carbon possesses the most outer shell electrons (four) that can form covalent bonds of any second row element.

One electron from each of the atoms contributes to a pair of electrons that are shared in a single bond. Triple bonds share three pairs of electrons, while double bonds share two pairs. Multiple covalent bonds are bonds that share more than one pair of electrons.

Because it has four valence electrons, carbon may create four covalent bonds in order to reach the complete outer energy level. It creates compounds known as hydrocarbons when it solely bonds with hydrogen. Covalent bonds between carbon atoms can be single, double, or triple bonded.

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Copper has a delta. Hfus = 13. 0 kj/mol. What mass of copper releases 112. 4 kj of heat as it freezes?use q equals n delta h. 9. 42 g6. 75 g549 g1590 g.

Answers

The mass of copper releases 112. 4 kj of heat as it freezes be 549.4631 g.

How do you calculate the Heat of Fusion?

Let Q be the  Heat Required

n be the number of moles

number of moles = mass/molar mass

H be the Heat of Fusion = 13.0 kJ/mol

Let the equation be Q = n ΔH

n = Q / ΔH

substitute the values in the above equation, we get

n = 112.4 / 13

simplifying the equation, then

n = 8.65 mol

The number of moles of copper exists 8.65 mol.

To estimate the mass,

n = 8.65 mol

mass = 63.54 g/mol

m = M × n

substitute the values in the above equation, we get

=  8.65 mol × 63.54 g/mol

m = 549.4631 g

Therefore, the correct answer is option c) 549.4631 g.

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which type of radioactivity has a negative charge?
A) alpha, α.
B) beta, β. C) gamma, γ. D) delta, δ

Answers

Answer:

Beta β

Explanation:

Beta particles are negatively charged electrons emitted by the nucleus on decay

What is the frequency of light with a wavelength of 300nm?

Answers

The frequency of the light with a wavelength of the 300nm is  1 × 10¹⁵ Hz.

The wavelength of the light = 300 nm = 300 × 10⁻⁹ m

The frequency of the light can be calculated by the expression is as :

Frequency = speed of the light / wavelength

Where

The speed of the light = 3 × 10⁸ m/s

The wavelength of the light =  300 × 10⁻⁹ m

Frequency = speed of the light / wavelength

Frequency = 3 × 10⁸ m/s /  300 × 10⁻⁹ m

Frequency = 0.01 × 10¹⁷ Hz

Frequency = 1 × 10¹⁵ Hz

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Interconverting molar mass and density of ideal gases Calculate to three significant digits the density of dinitrogen monoxide gas at exactly 20 °C and exactly 1 atm.You can assume dinitrogen monoxide gas behaves as an ideal gas under these conditions.

Answers

The density of dinitrogen monoxide gas at exactly 20 °C and exactly 1 atm is 1.83 g/L.

The problem states that we can treat this gas as an ideal gas, therefore, we can use the equation of an ideal gas which is:

PV = nRT

Now, the density (d) is calculated as:

d = m/V

We can rewrite above equation,

m = d*V

Now, the moles (n),

n = m /MM

The ideal gas equation is,

d = P * MM / RT

The molar mass of N₂O is 44 g/mol.

So, replacing all the data we have:

[tex]d = \dfrac{1 \times 44}{0.082 \times 293}[/tex]

d = 1.83 g/L

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Which of the following is NOT a possible pair of quantum numbers?
Multiple Choice:
2p
2d
4p
4f

Answers

The 2d orbital shell where n = 2 , has not a possible pair of quantum numbers. So, correct choice is option (b).

Quantum numbers specify the properties of atomic orbitals and the electrons in those orbitals. Each electron in an atom is described by a set of four numbers:

Principal quantum number (n)Angular momentum quantum number (l)Magnetic quantum number (ml)Spin quantum number (ms)

The spin quantum number indicates the two possible orientations of the electron's spin. The value of the spin quantum number can never be zero because electrons always have either positive or negative spin. The rules for quantum numbers are:

'n' can be any positive non-zero integral value.'l' can be zero or any positive integer but not greater than (n-1). l = 0, 1, 2, 3, 4, ….(n-1) 'mₗ', the values correspond to Eq. -l, +1, +2, +3, +l'mₛ', can be +1/2 or -1/2.

Now check the options for 2p ; n = 2, l = 1, mₗ = -1,0,1, this set of quantum numbers is possible.

For 4p, n = 4, l = 1, mₗ = -1, 0, 1. So it's a possible orbital.

For 2d, n = 2, l = 2 (for d orbital), but according to the rule, the value of l cannot equal n, so a 2d orbital is not possible.

For 4f, n = 4, l = 3, mₗ = -3,-2,-1,0,1,2,3. So it is possible. So, a 2d orbital is not possible.

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What is molar mass of calcium phosphate?

Answers

The molar mass of calcium phosphate Ca₃(PO₄)₂ is 310 g. Molar mass is the aggregate of the masses of all the individual atoms present in a molecule or compound.

The chemical formula of calcium phosphate is Ca3(PO4)2. The atomic mass of calcium Ca is 40 u. The atomic mass of phosphorus P is 31 u. The atomic mass of Oxygen is 16 u.

The molecular mass of calcium phosphate = (atomic mass of calcium) × 3 + (atomic mass of phosphorus) × 2 + (atomic mass of oxygen) × 8

= (40 × 3) + (31 × 2) + (16 × 8)

= 310 g.

Therefore the molecular mass of calcium phosphate is 310 g.

Calcium phosphate, also called tricalcium phosphate, is a kind of mineral.

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what is nf3 compound name ?

Answers

The compound name for NF3 is nitrogen trifluoride.

NF3 is a compound that is commonly known as nitrogen trifluoride, is made up of one nitrogen atom and three fluorine atoms.

It is used in a variety of industrial processes, but it is also a potent greenhouse gas that contributes to global warming.

It is a colorless, odorless, and nonflammable gas that is used in the production of semiconductors, flat panel displays, and solar cells. It is also used as an etchant in the production of microelectronic devices.

Nitrogen trifluoride is a powerful greenhouse gas, with a global warming potential 17,200 times greater than that of carbon dioxide.

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what is the vsepr geometry is most likely for the carbon atom in this transition state?

Answers

The VSEPR geometry for the carbon atom in the transition state would depend on the specific molecule and reaction being considered.

VSEPR, or Valence Shell Electron Pair Repulsion, the theory is used to predict the shape of molecules based on the distribution of electron pairs around the central atom. In a transition state, the molecule is in a high-energy, intermediate stage of a chemical reaction, and its shape may be different from the starting materials or final products.

The VSEPR geometry of the carbon atom in the transition state would depend on the specifics of the molecule and reaction, including the number of electron pairs around the carbon atom and the types of atoms bonded to it. To determine the VSEPR geometry for a specific transition state, it is necessary to have detailed information about the molecule and reaction in question.

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If a 1.0 L canister holds 2.0 moles of gas, and the temperature of the gas is 500. C, what is the pressure inside the container in atm

Answers

The pressure of the gas inside the canister can be determined using the ideal gas equation. The pressure inside the canister is 126.7 atm.

What is ideal gas equation ?

Ideal gas equations states the relation between volume, pressure, temperature and number of moles of gas as written below:

PV = nRT.

Where R is the universal gas constant equal to 0.082 L atm/K mol.

Given the volume of the tank  V = 1 L

number of moles n = 2 moles

temperature = 500 ° C = 773 k

Then pressure P = nRT/V.

Pressure of  gas = 2 moles ×773 K× 0.082 L atm/K mol /(1 L)

P = 126 atm.

Therefore, the pressure of the gas in the canister is 126 atm.

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is ICl5 Lewis structure polar or nonpolar?

Answers

The ICl5 Lewis structure is polar.

To determine the polarity of a molecule, we must first look at its Lewis structure. In the case of ICl5, the Lewis structure has iodine (I) in the center with five chlorine (Cl) atoms bonded to it. Each chlorine atom has three lone pairs of electrons, while the iodine atom has one lone pair of electrons.

The electronegativity difference between iodine and chlorine is relatively small, but the molecule has a distorted octahedral shape with the lone pair of electrons on the iodine atom causing a slight asymmetry. This asymmetry creates a net dipole moment, making the molecule polar.

The ICl5 Lewis structure is polar due to its asymmetrical shape and the presence of a net dipole moment.

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A tank of compressed CO2 has a pressure of 851 psi and a volume of 0.150 L. What is the pressure in atmospheres, when the final volume is 2.84 L?

Answers

A tank of compressed CO2 has a pressure of 851 psi and a volume of 0.150 L. The pressure in atmospheres, when the final volume is 2.84 L is 44.94psi.

What is pressure ?

The term pressure is defined as the force applied perpendicular to the surface of an object per unit area over which that force is distributed.

Gauge pressure is the pressure relative to the ambient pressure. Different units are used to express pressure.

Given:

P1 = 851

V1 = 0.150 L

P2 = ?

V2 = 2.84 L

P1V1 = P2V2

P2 = P1V1 / V2

=  851 × 0.150 / 2.84

P2 = 44.94

Thus, the pressure in atmospheres, when the final volume is 2.84 L is 44.94psi.

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Arrange these compounds by their expected boiling point.a. CH3OH b. CH4 c. CH3Cl

Answers

The expected boiling points of the compounds, in order from highest to lowest, would be CH3OH > CH3Cl > CH4

CH3OH - Methanol is a polar organic compound with a boiling point of 64.7°C.

CH4 - Methane is a non-polar organic compound with a boiling point of -164°C.

CH3Cl - Chloromethane is a polar organic compound with a boiling point of 40.1°C.

Therefore, the expected boiling point order is CH4 < CH3Cl < CH3OH.

The temperature at which a material transforms from a liquid into a gas is known as its boiling point.This is usually determined by the vapor pressure of the substance; when the vapor pressure of a liquid is equal to the atmospheric pressure, it boils and changes to a gas.

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what is acetylcholine

Answers

Acetylcholine is a chemical messenger, or neurotransmitter, that is released by nerve cells in the brain and nervous system.

It plays an important role in the transmission of nerve impulses across the synapse, or gap, between nerve cells. Acetylcholine is involved in many functions of the body, including muscle movement, memory, and cognition.


Acetylcholine is released from the presynaptic neuron into the synapse, where it binds to receptors on the postsynaptic neuron. This binding triggers an electrical signal, or action potential, in the postsynaptic neuron, which then propagates the nerve impulse to other cells.

After it has done its job, acetylcholine is broken down by an enzyme called acetylcholinesterase, so that it can no longer bind to the receptors and trigger an action potential.


Acetylcholine is an important neurotransmitter in both the central nervous system (CNS) and the peripheral nervous system (PNS). In the CNS, it is involved in memory and cognition. In the PNS, it is involved in the control of muscle movement, including the contraction of skeletal muscles and the regulation of smooth muscles in the digestive tract, lungs, and other organs.

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Explain how the concentration of a solute in a solution influences its boiling point and freezing point.


PLEASE BE ACCURATE!!! Thank you!!:))

Answers

The addition of a non-volatile solute into a solvent decreases its freezing point and increases its boiling point. Both these changes are colligative property. As the solute concentration increases, the changes also increases.

What are colligative properties ?

Colligative properties are those properties which depends on the amount of the substance. For example elevation of boiling point is a colligative property which increases with the concentration of the solute added.

When a non -volatile solute is added to the solvent, the solvent -solvent bonds becomes weaken and solvent -solute bonds make the solvent molecules difficult to escape into vapor phase. This will increase the boiling point.

Similarly, the addition of salt makes the solvent molecules in intact and the intermolecular force between solute-solvent molecules makes them easily freeze which leads to depression in freezing point.

Both these changes are colligative property. As the concentration of solute increases, the elevation of boiling point or the depression in freezing point increases.

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How many Lewis dots are in lithium?

Answers

There is one Lewis dot in lithium, representing the one valence electron in the outermost shell of the atom.

Lithium is a compound component with nuclear number 3 and image Li. In the Lewis speck design of lithium, the image Li is encircled by a solitary dab, which addresses the one valence electron of the lithium iota. This electron is situated in the peripheral shell of the particle, otherwise called the valence shell, which is the shell that takes part in substance holding. The Lewis dab design of lithium demonstrates that there is just a single valence electron in the iota. The peripheral shell of lithium can oblige up to eight electrons, however lithium will in general lose its valence electron to shape a steady cation with a positive charge of +1.

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determine whether each of the examples represents a colligative property or a non-colligative property.

Answers

Examples of colligative properties include boiling point elevation, freezing point depression, vapor pressure lowering, and osmotic pressure.

Examples of non-colligative properties include color, density, and refractive index. These properties depend on the identity of the solute particles and not on their concentration.

Colligative properties are properties of a solution that depend on the concentration of solute particles in the solution and are independent of the identity of the solute particles. Non-colligative properties, on the other hand, are properties of a solution that are dependent on the identity of the solute particles.

It is important to note that while colligative properties are not affected by the identity of the solute particles, they do depend on the number of particles in the solution. Therefore, colligative properties can be used to determine the molecular weight of a solute or the degree of dissociation of an ionic compound.

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Use the reaction equation and bond energies to answer the question.
2H₂O 2H₂ + O₂
H-O: 467 kJ/mol
H-H: 432 kJ/mol
-
O=O: 498 kJ/mol
What is the total energy of the reaction? Is this an endothermic or exothermic reaction?
(1 point)
O -506 kJ/mol, exothermic
O-506 kJ/mol, endothermic
O 506 kJ/mol, endothermic
O 506 kJ/mol, exothermic"

Answers

To determine the total energy of the reaction, we need to calculate the energy required to break the bonds in the reactants and the energy released when new bonds are formed in the products.

How to determine total energy ?In the reactants, we have two H-O bonds and one O=O bond:

2H-O: 2 x 467 kJ/mol = 934 kJ/mol

1O=O: 1 x 498 kJ/mol = 498 kJ/mol

Total energy required to break bonds in the reactants: 1432 kJ/mol

In the products, we have four H-H bonds and one O=O bond:

4H-H: 4 x 432 kJ/mol = 1728 kJ/mol

1O=O: 1 x 498 kJ/mol = 498 kJ/mol

Total energy released when new bonds are formed in the products: 2226 kJ/molTo find the total energy of the reaction, we need to subtract the energy required to break bonds in the reactants from the energy released when new bonds are formed in the products:

Total energy of the reaction = energy released - energy required = 2226 kJ/mol - 1432 kJ/mol = 794 kJ/mol

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Please help with B, I don't know how to find the molar mass.

Answers

Answer:

The molar mass of NO (nitrogen monoxide) is approximately 30.01 g/mol.

Explanation:

The molar mass of a substance is the mass of one mole of that substance, expressed in grams per mole (g/mol). The molar mass of NO (nitrogen monoxide) can be found by adding up the atomic masses of nitrogen (N) and oxygen (O), which can be found on the periodic table of elements. The molar mass of NO is approximately 30.01 g/mol.

What do you mean by the law of mass action?

Answers

The law of mass action is a chemical principle that states that the rate of a chemical reaction is directly proportional to the product of the concentrations of the reactants.

This means that the more reactants you have, the faster the reaction will proceed.

The law of mass action can be expressed mathematically as:

rate = k[A][B]

where k is the rate constant, [A] and [B] are the concentrations of the reactants, and the rate is the speed at which the reaction proceeds.

The law of mass action is important in understanding how chemical reactions work and how to control them. By manipulating the concentrations of the reactants, we can control the rate of the reaction and therefore control the outcome of the reaction.

In summary, the law of mass action is a fundamental principle in chemistry that describes how the rate of a chemical reaction is affected by the concentrations of the reactants.

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what experimental criterion is to be used to measure the rates of bromination of the hydrocarbons used in this experiment?

Answers

To measure the rates  of bromination of the hydrocarbons used in experimental criterion is color change.

Bromination is a chemical reaction including the response of a compound, and bromine results in bromine added to the compound. The item framed after bromination will display new properties from the underlying reactant.

Bromination can happen in various ways, contingent upon the reactant.

An immersed compound goes through bromination by means of a free extreme instrument.An unsaturated hydrocarbon goes through bromination by means of an expansion response.A sweet-smelling compound goes through bromination by means of an electrophilic replacement instrument.A sweet-smelling compound goes through bromination by means of an electrophilic replacement instrument.

The mechanism for bromination happens in three stages.

Initiation of bromine by Lewis acids.Attack of benzene.Deprotonation to produce benzene ring.

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Read the excerpt from Flannery OConnors The Life You Save May Be Your Own.He held the pose for almost fifty seconds and then he picked up his box and came on to the porch and dropped down on the bottom step. Lady, he said in a firm nasal voice, Id give a fortune to live where I could see me a sun do that every evening.Keeping in mind the ending of the story, which best describes the irony of Mr. Shiftlets statement?Mr. Shiftlet does not need a fortune, as he places no value on financial wealth or the security of having a permanent home.Instead of staying at the plantation, where he can see sunsets like these for the rest of his life, he runs away with Mrs. Craters car and money.According to Mrs. Crater, the sun sets like this every evening, and if he stays at the plantation, Mr. Shiftlet will see this regularly.No amount of money can ensure that an individual will witness a sunset to equal this one and will see it every single day. what would you call a granite that has undergone metamorphism and now exhibits foliation? Julio makes $ 12.50 per hour. This week he worked 10 hours of overtime which is paid at $ 20 per hour after his 40 hours. He worked 50 hours in total. What is Julio's gross income this pay period? imaging math which step of business process management allows managers to create a continually improving process? list the 7 places mentioned in the text as retaining their independence during this time period Given that A is true, B is true, and C is false, evaluate each of the following expressions. To grade your work, declare and initialize the three variables in Processing, then print the result of each expression below and compare it to your result. a. A \&\& !B b. BC c. 1 B==C d. A&&!C e. (BC)&&(!A) f. (A!=B)(B!=C) 4eferring to as6m specification c33 (6able 5.5), what are the maximum sieve size and the nominal maximum sieve size (traditional definition) for each of the standard sizes 0umbers 3 and ! Indigo goes out to lunch. The bill, before tax and tip, was $11. 35. A sales tax of 4% was added on. Indigo tipped 19% on the amount after the sales tax was added. What was the total cost of the meal, plus tax and tip? round to the nearest cent. who is the scientist that is credited with developing the theory of continental drift? Match the national development term in column 1 with the description in column 2. why did the colonies decide they needed a national government in addition to state governments? I need help how did you find the answer?t - 38 = 9 solve what is tt= Which of these agreements gave outdated American destroyers to Great Britain in exchange for permission to build American naval bases on islands and colonies owned by Great Britain?Choose matching definition1. "Destroyers for Bases"2. Greater East Asian Co-Prosperity Sphere3. increased trade agreements4. to escape povertyto get revenge on the Japanesefrom a sense of dutyfrom a sense of patriotism Which of the following statements is true about photosynthesis?Photosynthesis uses water and carbon dioxide to produce glucose and oxygen.Photosynthesis uses oxygen and water to produce glucose and carbon dioxide.Photosynthesis uses carbon dioxide and oxygen to produce glucose and water.Photosynthesis uses glucose and water to produce carbon dioxide and oxygen. Calculate (0.82 0.042) x (4.4 x 103). express the answer to the correct number of significant figures. a. 3800 b. 3520 c. 3784 d. 3793 is a ml the same as a cc What is the book The Red and the Black about? Causes of population increase in seventeenth-century English North America include which of the following?natural increase among the EnglishAfrican slavesEuropean immigration what are the effects of cooling on the physical properties of a substance when adh is released by the pituitary, absorption of water from the collecting ducts of nephrons , resulting in decreased blood osmolarity.