Somebody pls help with theses questions??

If the solute concentration for a particular molecule inside of the cell is 100mm and the concentration for this same molecule is 10mm, water will move into the cell.

What is osmosis?

Osmosis is the naturally occurring net movement or diffusion of solvent molecules over a selectively permeable membrane from an area of high water potential to a region of low water potential, in a manner that attempts to balance the solute concentrations on the two sides.

Both osmosis and diffusion are passive transport processes, which means they don't need any additional energy to take place. Particles transfer from a region of higher concentration to one of lower concentration through osmosis and diffusion, respectively.

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Among the following compounds, Sodium nitrate and CH₄ are neither an acid nor a base.

Sodium nitrate is an alkali metal salt which is made from the neutralization of a strong base (NaOH) with a strong acid (HNO₃). It has a pH value equal to 7. Therefore, sodium nitrate is neutral.

CH₄ has a neutral pH, of around 7. If a substance is acidic in nature, it must contain in the form where that can be released into water. But CH₄ is not acidic or basic as all the four hydrogen are bound tightly to the carbon atom and cannot be released, i.e., CH₄ has all of its valence electrons in bonding pair and bonding pairs are too stable to donate under normal conditions.

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Hydrogen bonds do not form between two hydrogen atoms. where do hydrogen bonds form?

hydrogen bonds act between adjacent molecules and between atoms of the same molecule. hydrogen bonds form between a slight positive change on the hydrogen atom of a polar covalent bond.

What is molecules?

According to the context, the term may or may not include ions that meet this requirement. A molecule is a collection of two or more atoms held together by the attractive forces known as chemical bonds.

Therefore,

Hydrogen bonds do not form between two hydrogen atoms. where do hydrogen bonds form?

hydrogen bonds act between adjacent molecules and between atoms of the same molecule. hydrogen bonds form between a slight positive change on the hydrogen atom of a polar covalent bond and a slight negative charge on an oxygen atom of another polar covalent bond.

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The electrons of every lithium atoms in the container have a combined negative electric charge of 8.96 × 10⁶ C

We have 3 moles of electrons (e⁻) in 1 mol of Li, so the quantity of negative electric charge is:

hence

negative electric charges =  3 × 31 × 6.022 × 10²³ × 1.60 × 10⁻¹⁹

negative electric charges = 8.96 × 10⁶ C

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Hydrogen chloride gas and oxygen react to form water vapor and chlorine gas.

What is Hydrogen chloride?

A hydrogen halide is the substance hydrogen chloride, which has the chemical formula HCl. It is a colourless gas at room temperature that reacts with water vapour in the air to produce white fumes of hydrochloric acid. In technology and industry, hydrochloric acid and hydrogen chloride gas are crucial. The formula HCl is also frequently used to refer to hydrochloric acid, an aqueous solution of hydrogen chloride.

4.75 litres of water would be created as a result of this process.

Given: HCl gas volume = 9.5 L

The chemical process will be balanced if:

4HCl + O2 → 2H2O + 2Cl2

As we are aware, 1 mole of gas at STP occupies 22.4 L of gas.

According to the stoichiometry, 4 litres of HCl gas react to produce 2 litres of chlorine.

As a result, 9.5 litres of HCl gas react to produce 9.5*2/4 litres of Cl.

Therefore, 4.75 litres of Cl would be created by this process.

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C-H sp2 and C=C double bond stretching bonds will disappear.

The examination of infrared light's interactions with molecules is known as infrared spectroscopy. It's frequently utilized to find numerous bonds and functional groups in both organic and inorganic compounds.

Each compound has a distinctive light absorption area that acts as its unique fingerprint. It can be used to identify functional groups in a molecule because the majority of them exhibit absorption bands in this range (400-1400cm-1).

This method can be used to evaluate whether the addition reaction of bromine (Br2) with 1-pentene has completed because the spectral bands for the C-H sp2 and C=C bonds will vanish.

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The density of aluminum 2.7 g/cm3 in kilograms per cubic meter is  2700 [tex]kg/m^{3}[/tex] .

A substance's density is defined as its mass per unit of volume. Density is most frequently represented by the symbol, however Latin letter D may also be used. The formula for density is mass divided by volume:

ρ = M/V

where m is the mass and V is the volume.

The kilogramme is equal to one gramme divided by one thousand.

So, (2.7/1)×(1000000/1000)

= 2700 [tex]kg/m^{3}[/tex]

Therefore, the density of aluminum 2.7 g/cm3 in kilograms per cubic meter is  2700 [tex]kg/m^{3}[/tex] .

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Quantitative Qualitative

Male parrotfish 1.3 meters in length

Brain coral over 2 meters in circumference

Sea anemone tentacles have an average length of 7 cm

Qualitative

Angelfish has swirl patterns of black and white

Angelfish swimming in large schools

Male parrotfish has large scales and scar near base of

tail fin

Scar on parrotfish may have been caused by a bite from

another fish

Parrotfish is afraid of brain coral because the fish will

not touch the coral

Sea anemone have purple tipped tentacles

My hand brushed up against sea anemone tentacle and

it began to hurt

Most of the sand near the coral reef has been washed

away by the tide

Few divers visit this coral reef because there is no litter

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The compound Trinitroglycerin is a molecular compound

The compound Trinitroglycerin is basically used as an explosive. It could decompose following the equation;

a) [tex]4C_{3} H_{5} N_{3} O_{9} (l)--- > 12CO_{2} (g) + 10H_{2} O(g) + 6N_{2} (g) + O_{2} (g)[/tex]

b) We can see that the decomposition of the compound Trinitroglycerin produces -1541.4 kJ/mol of energy hence 1541.4 kJ/mol is the enthalpy of formation of the compound.

c) Number of moles in 0.6 mg of the compound = 0.6 * 10^-3 g/227 g/mol

= 2.6 * 10^-6 moles

If 4 mole of the compound produces 1541.4 kJ of heat

2.6 * 10^-6 moles of the compound produces  2.6 * 10^-6 moles * 1541.4 kJ/4 mole

= 1 * 10^-3 kJ or 1 J

If 1 Cal = 4.184 J

x = 1 J

x = 0.24 cal

d) The compound is a molecular compound

e) When trinitroglycerin is used as an explosive to break rockfaces in highway construction, chemical energy is converted to heat, light, sound and mechanical energy.

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Answer:

32 degrees

Explanation:

Answer:

Water changes to Ice at 0 degree celcius

Explanation:

Hope it helps!!!

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Answer:

b) no change; an increase

Explanation:

Kinetic energy does not change but potential energy increases at melting point.

The purposes of the aqueous sodium bisulfite solution that is added during the workup of the bromination reaction remove moisture from organic layers To scavenge excess bromine in the reaction mixture To remove byproducts None of the above. The reaction between ethyl chloride and magnesium followed by addition to benzaldehyde belongs to the Grignard reaction category.

What is an aqueous sodium bisulfite solution?

This salt of bisulfite is often prepared by bubbling sulfur dioxide in a solution of sodium carbonate in water. Sodium bisulfite in touch with chlorine bleach (aqueous solution of sodium hypochlorite) will generate heat and form sodium bisulfate and sodium chloride.

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(a) When electrons are in their lowest energy state, we say that they are in _________.

(b) Sometimes, when ________ energy such as ________ or electricity is applied to the atom, the electrons absorb energy and transition to an _________ state.

(c) The electrons can not sustain this higher energy state for so long, so eventually ________ occurs.

(d) As a result, the electrons release energy in the form of a ______ and return back to ____.

(e) The jump between the high energy state to a lower energy state is called a _________.

(a) Ground State

(b) higher energy , excited state

(c) unstability

(d) light , ground state

(e) excited state absorption

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The assertion it is true that ' the  covalent bonds linking distant cysteine amino acid residues in protein tertiary structures .

In the tertiary structure, a protein disulfide isomerase forms a disulfide link between the two -SH groups when two cysteines are placed near together . The disulfide bond can be regarded as a component of the polypeptide of amino acid , which makes up the fundamental structure of proteins , due to its nature .

Cysteine plays a clear role in the tertiary structure of protein s. These residues build disulfide bridges that connect the polypeptide chain fragments , some of which are situated widely apart from one another in terms of their fundamental structure .

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Cobalt-60 is composed of 27 protons, 33 neutrons, and 27 electrons.

Atom which is heavy   have more neutrons than protons, but the number of electrons in an atom is always equal to the number of protons in an atom. So an atom  is electrically neutral.

Electrons are  negative as they behave in an electric field. In an electric field, an electron will move from the negative pole to the positive pole , by convention it  becomes a negative charge.

Electrons are atomic particle with a negative charge. Protons are atomic particle with a positive charge. Protons are bind together in an atom's nucleus because of strong nu-cleric force.Neutrons are the atomic particles which are neutrally charged.

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The order to show the precipitation of halite from water are given below.

What is precipitation ?

Precipitation is the process of changing a dissolved substance from a super-saturated solution to an insoluble solid in an aqueous solution. Precipitate refers to the produced solid. The chemical agent that initiates the precipitation in an inorganic chemical process is referred to as the precipitant.

Step 1: Seawater starts to evaporate.

Step 2: Na cations and Cl anions concentrate as water molecules leave the liquid state and are left behind.

Step 3: Cl anions and Na cations move toward one another and start to bind.

Step 4: The resulting NaCl pairs join and start to form a crystal of halite, an ordered structure.

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Question:

Rank the following in order to show the precipitation of halite from water. Place the first event at the top and the last event at the bottom.

By ideal gas approximation, the temperature of methane gas is 110.71 K.

We need to know about the ideal gas theory to solve this problem. The ideal gas is assumed that there is no interaction between particles in a gas. It can be determined by the equation

P . V = n . R . T

where P is pressure, V is volume, n is the number of moles gas, R is the ideal gas constant (8.31 J/mol.K) and T is temperature.

From the question above, we know that

V = 20 L = 0.02 m³

P = 92 kPa = 92 x 10³ Pa

n = 2 moles

By substituting the following parameters, we get

P . V = n . R . T

92 x 10³ . 0.02 = 2 . 8.31 . T

16.62T = 1840

T = 110.71 K

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This is because the eluting strength of a solvent polarity is essentially connected to how firmly it adsorbs onto the adsorbent.

What is tlc plate?

A TLC plate is a piece of glass, metal, or plastic that has been lightly covered with a solid adsorbent (usually silica or alumina). The bottom of this plate has a little space where the combination to be tested will be placed.

Thin Layer Chromatography TLC is a method that is frequently employed in synthetic chemistry to identify compounds, assess their purity, and monitor the course of a reaction. Additionally, it enables the optimization of the solvent system for a specific separation issue.

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To obtain pH 8, multiply the [H+] concentration at pH 6 by 0.01

From the question given above, the following data were obtained:

pH = –Log [H+]

8 = –Log [H+]

Multiply through by –1

–8 = Log [H+]

Take the anti-log of –8

[H+] = anti-log (–8)

[H+] = 1×10⁻⁸ M

pH = –Log [H+]

6 = –Log [H+]

Multiply through by –1

–6 = Log [H+]

Take the anti-log of –6

[H+] = anti-log (–6)

[H+] = 1×10⁻⁶ M

[H+] at pH 8 / [H+] at pH 6 = 1×10⁻⁸ / 1×10⁻⁶

[H+] at pH 8 / [H+] at pH 6 = 0.01

Cross multiply

[H+] at pH 8 = 0.01 × [H+] at pH 6

Thus, to obtain pH 8, multiply the [H+] at pH 6 by 0.01

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Buffer range of Na₂HPO₄/Na₃PO₄ is 10.9 to 12.9

using Henderson hasselbach equation:

pH = pKa + log₁₀ ([A⁻]/ [HA])

By this equation we can find out the buffer range

Given,

pH of given buffer is 11.9

Ka₁= 7.5 x 10⁻³

Ka₂= 6.2x 10⁻⁸

Ka₃= 4.8 x 10⁻¹³

so by Henderson hasselbach equation buffer range is 10.9 to 12.9

Therefore, correct option is (b)

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Once fermentation completed, a hydrometer of a stout indicated a specific gravity of 1.15.

Specific gravity = density of liquid/ density of water at 4°C

= mass of liquid/(volume*density of water)

specific weight = mass = 1150 kg.

What is specific gravity?

The ratio of a substance's density to that of water at a certain temperature is what is known as specific gravity, which is also sometimes known as relative gravity, which is a dimensionless quantity (has no unit). Since water has the maximum density at 4°C, 1000 kg/m3, in SI system. this temperature is frequently used as a benchmark.

The ratio of weight to volume is referred to as specific weight. In addition, the relationship between density and gravitational acceleration can be used to define specific weight. Contrary to density, specific weight depends on the gravitational acceleration (g), whose magnitude changes with altitude and latitude.

Specific gravity = density of liquid/ density of water at 4°C

= mass of liquid/(volume*density of water)

Thus specific weight = mass = 1150 kg.

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Driving instruction can be assisted by using computer simulations of the steering wheel, brakes, and gas pedal. The car's response is predicted by computer models after the controls detect the applied forces. This model has the benefit of simulating how the car turns when the steering wheel is rotated in various directions.

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The products of the first and second alkylation event are still very active alkylation agents.

Why is it so difficult to control the alkylation of primary amines in an sn2-type reaction manifold?

The products of the first and second alkylation event are still very active alkylation agents.

Primary and secondary formed amines by alkylation have more nucleophilic N (+I of alkyl group) which can further react with alkyl halide to give alkylation. Thus the reaction gives tertiary and quaternary amines.

Explanation:

The alkylation of ammonia during the manufacture of amine prevents the synthesis of secondary and tertiary amine. The Carbyl Amine Test is used to test it.

Because they react with alcoholic KOH, secondary and tertiary amine production fails to pass the carbylamine test.

The carbbylamine test is a test for identifying primary amines.

In this heating, an amine is present while the substance is being heated with chloroform in a basic solution.

It can be detected by the isocyanide's distinctively bad odor.

A positive carbylamine test will be produced by primary amines such isopropyl amine.

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A "p" orbital has two regions or lobes of high electron probability, on either side of the nucleus. This gives the orbital a dum---bbell shape with a nodal plane or region of zero electron density at the nucleus.

The term orbital refers to a region of electron density. It is the region where it is possible to find an electron in the nucleus. Note that the atom is composed of electrons, protons and neutrons. The electrons are found in the shells while the protons and neutrons are found in the nucleus.

The quantum numbers are describe the position of an electron in an atom. There are flour sets of quantum numbers and one of them is the orbital quantum numbers which describes the orbital where the electron is found. Various orbitals. have various shapes and appearances which determines the number of electrons that they can contain.

A "p" orbital has two regions or lobes of high electron probability, on either side of the nucleus. This gives the orbital a dum--bbell shape with a nodal plane or region of zero electron density at the nucleus.

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Missing parts;

A "p" orbital has _______ regions or lobes of high electron probability, on either side of the nucleus. This gives the orbital a dum--+bbell shape with a(n) _______ or region of zero electron density at the nucleus.

a. acetic acid = CH3COOH

b. silver carbonate = Ag2CO3

c. copper(ii) sulfate = CuSO4

d. dinitrogen monoxide = N2O

e. xenon trisulfide = XeS3

What is chemical formula?

An element's chemical symbol and the proportionate number of atoms it contains are used to identify each constituent element in a chemical formula. These proportions are determined by empirical formulae that begin with a key element and then assign atom counts to the other parts of the compound in relation to the key ingredient.

A chemical formula is a representation of a compound's constituent elements and their relative proportions.

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Transmission is referred to as the uninterrupted passage of insolation through the atmosphere or water.

This can be defined as the process in which solar energy is incident onto objects which are usually in the form of waves. This is made possible through the process of heat transfer which is referred to as radiation in a medium such as air, water etc.

This is transmitted to the environment as it serves as a source of energy for the organisms which are present in the ecosystem. It is usually uninterrupted and are absorbed by plants during the process of photosynthesis.

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The correct answer is d) none of these. Hexokinase is catalyzed to produce glycolysis.

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Try 35% ethyl acetate to see the substance present in it is more polar ,which on increasing the concentration of ethyl acetate to give a second spot.

The acetate ester produced when acetic acid and ethanol react is termed as ethyl acetate. It functions as an EC 3.4.19.3 (pyro glutamyl-peptidase I) regulator, a metabolite, and a Saccharomyces cerevisiae metabolite in addition to being a polar aprotic solvent. It is a volatile organic chemical, an ethyl ester, and an acetate ester.

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The complete question is :

You use 25% ethyl acetate (an ester) in hexane to run a tlc and obtain a single round spot with an Rf of 0.9 for the main compound. What would you do?

Answer:

d. 2-  

when it forms an ion.

Explanation: