the hydrologic cycle is the movement of ____. group of answer choices carbon carbohydrates water hydrocarbons hydrogen

A and B are two imaginary substances. The molecules of substance A have weak electrical forces between them. The molecules of substance B have very strong electrical forces linking them. Substance A boils at a lower temperature.

Boiling is the process in which a liquid changes into a gas at its boiling point, which is the temperature at which its vapor pressure equals the atmospheric pressure. The boiling point of a substance is influenced by various factors, including the strength of the forces between its molecules.

In substance A, the molecules have weak electrical forces between them. These weak intermolecular forces imply that the molecules are not strongly attracted to each other. As a result, less energy is required to break these weak forces, and the substance can transition from a liquid to a gas more easily. Therefore, substance A will have a lower boiling point compared to substance B.

In substance B, the molecules have very strong electrical forces linking them. These strong intermolecular forces indicate that the molecules are strongly attracted to each other. Consequently, more energy is required to overcome these strong forces during the boiling process, making the substance have a higher boiling point.

Therefore, substance A, with weak intermolecular forces, would boil at a lower temperature, while substance B, with very strong intermolecular forces, would boil at a higher temperature.

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If the cells do not multiply by mitosis then the wound will not heal.

There are two kinds of cell division and these are mitosis and meiosis. We have to note that mitosis occurs at the body cells and the exact number of chromosomes in the parent cell is transferred to the daughter cells.

Meiosis occurs in the gamete cells and each of the parent cells would only contribute half of the maximum number of the chromosomes that they contain.

We know that when we have a cut, the cells around the area of the cut would begin to multiply by the process of mitosis helping the wound to heal.

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Only two elements on the periodic table are elements at room temperature. They are mercury (a metal) and bromine (a halogen).

Four other elements are liquids slightly warmer than room temperature. They are francium, cesium, gallium, and rubidium (all metals).

The reason these elements are liquids has to do with how tightly bound their electrons are to the atomic nucleus. Basically, the atoms don't share their electrons with nearby atoms, so it is easy to separate them from solids into liquids.

By analyzing the charges of all ionizable groups in this peptide (shown in the attached table), we can conclude that the net charge of the molecule at pH 3 will be +3, at pH 8 it will be +1, and at pH 11 it will be 0.

To answer this question, we must look at the pKa values of all the groups that can be ionized in this peptide.

Glu is glutamic acid, and because it is located on the N-terminus of this peptide, we need to consider its amino group (pKa = 9.67) and its side-chain carboxylic group (pKa = 4.25). For histidine (His) the only relevant group is the one in its side-chain (pKa = 6.00). Tryptophan (Trp), serine (Ser), one of the glycines (Gly), leucine (Leu), and proline (Pro) do not have side chains that can be ionized and their amino and carboxylic groups are engaged in the peptide bonds, so we do not have to consider them for this. However, we have to consider arginine's (Arg) side chain (pKa = 12.48) and C-terminus glycine's carboxylic group (pKa = 2.34).

Based on this, we can construct a table (attached below) that shows what charge (if any) the listed groups will bear at the given pH values, and sum them up to calculate the net charge.

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8) The solubility of a solute is the maximum amount of that solute that will dissolve in a certain quantity of solvent under a certain temperature.

9) substance is completely consumed in a chemical reaction is limiting reactant.

The solubility of a solute is the maximum amount of a solute that can dissolve in a certain quantity of solvent and this depends on both the nature of solute and the nature of solvent under certain temperature and pressure.

In a chemical reaction , the substances that are completely used up when the reaction is finished is called as limiting reagent or limiting reactant.

Thus, 8) The solubility of a solute is the maximum amount of that solute that will dissolve in a certain quantity of solvent under a certain temperature.

9) substance is completely consumed in a chemical reaction is limiting reactant.

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The amount of solid required to saturate the water is  0.28g

What do you mean by solubility?

The creation of a new bond between the molecules of the solute and the solvent is known as solubility.

Given:

weight of salt = 60 gram,

solubility = 48/100 = 0.48

Formula used

solubility of solute =weigh of  solute in saturated solution/weight of solvent in saturated solution×100

Let weight of the solute = x

By using formula

X =  0.48*60/100 = 0.28g

Hence, weight of solute in saturated solution = 0.28g

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This method tells us that the gold-198 atom undergoes decay to turn out to be an atom of mercury-198 by converting a neutron to a proton.

A proton is a strong subatomic particle, symbol p, H⁺, or ¹H⁺ with a fantastic electric rate of +1 e basic price. Its mass is slightly much less than that of a neutron and 1836 times the mass of an electron.

A proton is a subatomic particle located inside the nucleus of each atom. The particle has a fantastic electrical rate, equal and opposite to that of the electron. If isolated proton would have a mass of best 1.673  10-27 kilogram, just barely less than the mass of a neutron.

Proton, strong subatomic particle that has a wonderful price identical in importance to a unit of electron charge and a relaxation mass of 1.67262 × 10−27 kg, that is 1,836 instances the mass of an electron.

The nucleus of a hydrogen atom or the H+ ion is an example of a proton. regardless of the isotope, each atom of hydrogen has 1 proton; every helium atom consists of 2 protons; each lithium atom includes three protons and so forth.

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The number of units per volume, area, or length: as. a: a substance's mass per unit volume is 85.12 g.

Therefore,

The density of tin in g ml =  6.037 g/ml.

so  the mass of a piece of tin with a volume of 14.1 mL.

= 6.037 x 14.1 = 85.12 g.

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A number that tells how many molecules there are of a certain compound is called a(n) coefficient.

A subscript is a small-sized variety on the bottom right of the image. It refers to the number of atoms of the detail. If the subscript seems on the lowest left of the image, it offers the detail's atomic range.

The chemical formulation which represents the actual range of atoms of every detail present in a molecule is called molecular formula.

The coefficients suggest the range of each substance worried inside the response and may be changed so that it will stabilize the equation. The coefficients deliver the number of molecules worried inside the response.

In the example reaction,  molecules of hydrogen react with one molecule of oxygen and convey molecules of water. second: the coefficients deliver the range of moles of every substance concerned within the reaction.

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The type of reaction that is occurring, given the equation is single replacement reaction

This is a reaction in which an element is replaced by another element which is higher in the electrochemical series. The following gives a better understanding of single replacement reaction.

CD + A -> AD + C

From the above, we can see that A has replaced C to produce AD

With the above idea, we can answer the question given as follow:

Co + 2AuNO₃ -> Co(NO₃)₂ + 2Au

We can see that Co replaces Au in the equation.

Thus, we can conclude that the reaction is single replacement reaction

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Answer:  the MAIN GROUP number equals the NUMBER of VALENCE electrons

90% of Egypt is the desert that receives very little rain is False.

Moisture is generally carried by Mediterranean winds. Very little rain comes from the Red Sea. The mountains of Egypt are located in places where it doesn't get much rain. As a result, precipitation is significantly less than in parts of Israel Lebanon, and Iran. About 96% of Egypt's total area is desert.

Egypt is a very dry country with little rainfall throughout the year. Most of the rain falls along the coast, the highest rainfall ever recorded for the city of Alexandria. Annual precipitation is about 200 mm. The Red Land was a barren desert that protected Egypt on both sides. These deserts separated ancient Egypt from neighboring countries and invading armies.

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The three properties that make radio waves ideal for communication include their long wavelengths, they can travel long distances and they can penetrate of many different types of materials.

Radio waves can be defined as a class of radiation called electromagnetic waves which can be used in communication to transmit signals in space.

These types of waves (radio electromagnetic waves) are well known because they have long wavelengths, thereby they are able to travel long distances in a relatively short period of time and this type of radiation can also penetrate many different classes of materials, thereby being ideal in communication.

Therefore, with this data, we can see that the radio waves are ideal for communication due to many properties which include long wavelength, long distance for traveling, and also the ability to penetrate through different substances and materials.

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Moles of helium is required to blow up a balloon to 87.1 liters at 74 C and 3.5 atm is  021.65 mole

Mole is the unit of amount of substances of specified elementary entities

According to the ideal gas law he number of moles of a gas n can be calculated knowing the partial pressure of a gas p in a container with a volume V at an absolute temperature T from the equation

n =pV/RT

Here given data is volume = 87.1 liters

Temperature = 74 °C means 347.15 k

Pressure = 3.5 atm

R = 0.0821

Putting this value in ideal gas equation then

n =pV/RT

n =  3.5 atm×87.1 liters / 0.0821 ×347.15 k

n = 021.65 mole

Moles of helium is required to blow up a balloon to 87.1 liters at 74 C and 3.5 atm is  021.65 mole

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At all temperatures above the freezing point, seawater with a salinity greater than 24.7 becomes denser as the temperature drops. Pressure increases cause seawater's density to rise.

The pressure difference between the surface and the deep seafloor causes a 2% change in density. The density of water decreases as it gets warmer, taking up more space. The water sample with the higher temperature will have a larger volume when comparing two samples of water with the same salinity or mass. Salinity has less of an impact on water density than temperature does. Therefore, if the layer with higher salinity is significantly warmer than the layer with lower salinity, the higher salinity layer may actually float on top of the lower salinity layer.

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The total mass of atom is inside the nucleus. Inside the nucleus proton and neutron is there. Therefore, option B is correct option

Atom is the smallest particle of any matter. Atom combines to form element and element combine to form molecule or compound.

Atom consists of electron, proton and neutron. The total mass of atom is inside the nucleus. Inside the nucleus proton and neutron is there. So calculate mass of an atom, total mass of all protons is added to the total mass of neutron. Electrons revolve around the nucleus. So in our given diagram electron are inside the nucleus, which is wrong. Electron should be inside the cloud region and outside the nucleus region.

Therefore, option B is correct option

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Mgcl2 is the molecule

What is molecule?

A molecule is two or more and atoms connected by the  chemical bonds are

which form the smallest unit of a real substance that retains the  composition and properties of that substance.

Molecules form the basis of chemistry.

Magnesium Chloride or the  Magnesium Dichloride or Chloromagnesite is a chemical compound with the molecular formula is  MgCl2. Magnesium is  Chloride is an ionic salt that is highly soluble in water.

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A closed water bottle has a pressure 1.5 atm, and a volume of 2.0 L. The water bottle is squeezed, to a new volume of 1.0 L. the new pressure of the water bottle is 3 atm.

given that :

pressure P1 = 1.5 atm

pressure P2 = ?

volume V1 = 2.0 L

volume V2 = 1.0 L

using the formula of Boyles Law, we get

P1 V1 = P2V2

P2 = (P1 V1) / V2

substituting the value in the formula,

P2 = ( 1.5 × 2.0 ) / 1.0

P2 = 3 atm

Thus, A closed water bottle has a pressure 1.5 atm, and a volume of 2.0 L. The water bottle is squeezed, to a new volume of 1.0 L. the new pressure of the water bottle is 3 atm.

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Answer: Last one( 4 pairs of valence electrons)

Explanation:

Answer:

Explanation:

Limitation of Lewis concept: -This fails to explain the cause of covalent bond formation and the nature of attractive force between the adjacent atoms in molecules likeH2,Cl2. -Fails to explain the geometry of a molecule. -It could not explain the release of energy during formation of covalent bonds.

Match the terms to their definition

1. Membrane -complex carbohydrate found in plant cell walls

2. Chloroplast -  an organelle responsible for photosynthesis; commonly found in plants, algae, and some bacteria

3. Grana - containing discs inside a chloroplast

4. Middle lamella - layer between primary cell walls of adjacent plant cells

5. Plasmodesmata -  tiny holes in a cell wall which allow the passage of chemicals between cells

6. Stroma - thick fluid found inside the inner membrane of a chloroplast

7. Turgor - normal state of internal pressure in a plant cell

8. Vacuole - bound organelle used for storage

Membrane is found in cell in which they separate the interior of cell from outside the environment and chloroplast is the type of plastid in which energy of the sun is converted into chemical energy for growth and grana are the little plates on which photosynthesis are responsible and  the middle lamella is a layer that cements together the primary cell walls of two adjoining plant cells and plasmodesmata are intercellular organelles found only in plant and algal cells and stroma is the fluid filling up inner space of chloroplast which incircle grana and thylakoids and turgor pressure is the hydrostatic pressure in excess of ambient atmospheric pressure which can build up in living and vacuole is the membrane bound cell organelles which is used for storage

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The equation, 2H₂(g) + O₂(g) → H₂O(g)  will obey law of conservation of mass.

According to the law of conservation of mass,  mass can only be changed from one type to another and cannot be produced or removed.

The law of conservation of mass would be like this. The identical mass  that started from the reactants would arrive in the products of each  chemical reaction. Mass is conserved in chemical reactions, as shown by balanced chemical equations.

→   In this reaction the count of hydrogen and oxygen atom will be equal on both side, hence, this will show the law of conservation of mass.

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A 0.522 g sample of a metal, m, reacts completely with sulfuric acid according to M(s) + H₂SO₄(aq) → MSO₄ + H₂(g), a volue of 241 mL of hydrogen is collected over water, the water level in the collecting vessel is same as the outer level, atmospheric pressure is 756.0 torr, and the temperature is 25°C, the vapor pressure of water at 25°C is 23.8 torr. Therefore, the molar mass of the metal is 58 g/mol.

We will assume that the hydrogen is an ideal gas. The equation of ideal gas is given as -

PV = nRT

where,

P is pressure,

V is volume,

n is number of moles,

R is gas constant, R = 0.082 atm.L/mol K

T is the temperature

We know that,

P = 756.0 = 0.995 atm

V = 241 mL = 0.241 L

T = 25ºC + 273 = 298 K

0.995 x 0.241 = n x 0.082 x 298

n = 0.995 x 0.241

      0.082 x 298

n = 0.2397

      24.436

n = 0.009 mol

To calculate the molar mass, we will use

Number of moles = Given mass

                                 Molar mass

Molar mass = Given mass

                       no. of moles

Molar mass = 0.522 g/mol

                       0.009

Molar mass = 58 g/mol

Hence, the molar mass of the metal is 58 g/mol.

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The amount of concentrated solution required would be 0.855 moles.

As per the formula,

Molarity = [tex]\frac{moles of solute}{litres of solution}[/tex]

Given, Molarity = 1.90 M

The Volume of solution in litres = 450/1000 L

                                              = 0.45 L

∴ 1.90 = [tex]\frac{moles of solute}{0.45}[/tex]

  Moles of solute = 0.855 moles

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The chemical formula for ammonia, according to this illustration is C) NH₃.

The balanced chemical equation for the formation of ammonia is given as follows:

N₂    +    3H₂     ----->    2NH₃

from the above reaction it is clear that :

1 mole of N₂ react with 3 mole of  3H₂ to produce 2 mole of ammonia.

according the question , :

blue represent = nitrogen

white represent = Hydrogen

there are 1 blue sphere, which is of Nitrogen and three white sphere which is of hydrogen . so, the compound form is NH₃.

Thus, The chemical formula for ammonia, according to this illustration is C) NH₃

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0.073 L of volume of 0.175 M  [tex]Na^{3}[/tex][tex]PO^{4}[/tex] solution is necessary to completely react with 95.4 ml of 0.102 m .

Each thing in three dimensions takes up some space. The volume of this area is what is being measured. The space occupied within an object's borders in three dimensions is referred to as its volume. It is sometimes referred to as the object's capacity.

The given reaction,

3CuCl2(aq)+2Na3PO4⇒ Cu3(PO4)2+6NaCl

3 molecules of copper chloride react with 2 sodium phosphate to form 1moles of copper phosphate.

Moles of Cu[tex]Cl^{2}[/tex]

n=MxV

where,

M = molarity = 0.102

V = volume =95.4 /1000 = 0.0954 L

put the value we get

n = 0.00973 moles

Moles of [tex]Na^{3}[/tex] [tex]PO^{4}[/tex]

n = 0.00973 x2/3

n = 0.00649  moles

Solve the molarity equation for volume, we get

V = 0.073 L

Hence, we can conclude that 0.073 L of 0.175 M  [tex]Na^{3}[/tex][tex]PO^{4}[/tex] solution is necessary to completely react with 95.4 ml of 0.102 m CuCl2.

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Answer:

Fe₂O3 +6 HCI - 2 FeCl3 + 3 H₂O

Explanation:

hope this helps.

The balanced equation obeys the law of conservation of mass. The balanced equation for the reaction of rust is Fe₂O₃ +6 HCI - 2 FeCl₃ + 3 H₂O. The correct option is C.

A chemical equation in which the number of atoms of reactants and products on both sides of the equation are equal can be defined as the balanced chemical equation. The amount of products and reactants on both sides of the equation are equal.

The numbers which are added to balance a chemical equation are called the coefficients. They are added in front of the formulas.

The reaction of HCl with iron results in the formation of ferrous chloride (FeCl₂ or FeCl₃). When acid reacts with metal, it dissolves both the rust and the metal.

The balanced equation is:

Fe₂O₃ +6 HCI - 2 FeCl₃ + 3 H₂O

Thus the correct option is C.

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