Sally is building a list of the types of matter that have energy. She includes liquids on her list because she can see that liquids flow. Is her list complete?

a. yes, her list with just liquids on it is complete
b. no, she should add only gases to her list
c. no, she should add only solids to her list
d. no, she should add gases and solids to her list

Answer:

Noble gases have very stable electron configuration and does not need to gain electrons, only when they gain energy. 1) For example, krypton is a chemical element with symbol Kr and atomic number 36, which means it has 36 protons and 36 electrons.

Answer: I think it’s B, The highest occupied s and p sub levels are completely filled.

Explanation:

Answer:

(i) Ionization enthalpy:

Alkaline earths have higher ionization enthalpy values than alkali metals. This is because the atomic size of alkaline earths is smaller than that of alkali metals.

(ii) Basicity of oxides:

On dissolution in water, the oxides of alkali metals and alkaline earth metals form basic hydroxides. The basicity of alkali metal oxides is higher than that of alkaline earth metal oxides due to lower ionization enthalpy of alkali metals than that of corresponding alkaline earths. Due to this, the M-OH bond in alkali metal hydroxides can more easily ionize.

(iii) Solubility of hydroxides:

Alkaline earths have larger lattice energies than alkali metals due to small size and high charge. Hence, alkaline earth metal hydroxides have lower solubility than alkali metals.

Comparison between the alkali and alkaline earth metals are that alkali metals are soft, have high M.P. & shows magnetism and alkaline are hard, have low M.P. & no magnetism.

Alkali earth metals are those elements which are present in the first period of the periodic table and alkaline earth metals are those which are present on the second group of the periodic table.

Hence the comparison between them are discussed above.

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Answer:

In chemistry, neutralization or neutralisation is a chemical reaction in which acid and a base react quantitatively with each other. In a reaction in water, neutralization results in there being no excess of hydrogen or hydroxide ions present in the solution.Neutralization reactions are the reaction between acid and base. The products formed are water and salt. It is called so because the acid and base neutralize each other to form water and salt.Hint: The neutralization reaction is the one in which an acid reacts with an equimolar amount of base to give salt and water. The example could be a reaction between any strong acid and a base. The sodium chloride formed is a result of neutralization reaction.

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The N-terminal amino acid in the pentapeptide gly-ala-iso-leu-met is glycine (gly) (option B)

Glycine, characterized by the chemical formula NH2‐CH2‐COOH, represents the most rudimentary amino acid known to science. Impressively, it assumes the distinguished status of being the most prevalent amino acid ubiquitously present within the intricate tapestry of the human body, comprising a remarkable 30% of the entire amino acid repertoire.

Functioning as a non-essential amino acid, glycine exemplifies the remarkable adaptability of our biological machinery, wherein the body possesses the capacity to synthesize it using alternative amino acids.

Nevertheless, it remains imperative to ensure a sufficient supply of glycine through dietary sources, given its multifarious and indispensable contributions to a myriad of essential physiological processes.

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Answer:

it's definitely a oxidation reaction because here the oxygen contained OH group present in yeild

The axodendritic synapses are rare and always terminate on dendrites.
Axodendritic synapses are a type of synapse in which the axon of one neuron forms a synapse with the dendrite of another neuron. This type of synapse is important for neuronal communication and signal transmission in the nervous system.

Out of the given options, option a) states that axodendritic synapses are rare, which is true. This means that they are not commonly found in the nervous system.

Option c) states that axodendritic synapses always terminate on dendrites, which is also true. Dendrites are the receiving end of a neuron, and the axon terminals form synapses with dendritic spines to transmit signals to the next neuron.

Therefore, the correct answer is a and c, which means that axodendritic synapses are rare and always terminate on dendrites.

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First blank: 1

Second blank: 27

Third blank: 3

Fourth blank: 16

Fifth blank: 3

Sixth blank: 1

Seventh blank: 78

The reaction you provided is: C2H5OH (l) → CH3OCH3 (g)

To determine the enthalpy change (ΔH) for the reaction, we can use the given standard molar enthalpies of formation (∆Hf) for the reactants and products involved.

The equation for the reaction is:

∆Hf(CH3OCH3) = ∆Hf(C2H5OH) - ∆Hf(H2O) - ∆Hf(CO2)

Substituting the given values:

∆Hf(CH3OCH3) = -1460.4 kJ/mol - (-276 kJ/mol -285.83 kJ/mol -393.52 kJ/mol)

Simplifying:

∆Hf(CH3OCH3) = -1460.4 kJ/mol + 955.35 kJ/mol

∆Hf(CH3OCH3) = -505.05 kJ/mol

Therefore, the enthalpy change (∆H) for the reaction C2H5OH (l) → CH3OCH3 (g) is -505.05 kJ/mol.

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Answer:

11.5 okkkkkkkkkkkkkkkkkkkkkkkkkkkk chutita

Answer: See Explanation

Explanation:

When the volume of a gas is decreasing at a constant pressure, the temperature of the gas will increase. This is because of the relationship between the pressure, volume, and temperature of a gas, which is described by the Ideal Gas Law (PV = nRT), where P is pressure, V is volume, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature.

In this scenario, the pressure is constant, and the volume is decreasing, so the product PV must remain constant in order to maintain the balance of the equation. Therefore, the only way to balance this equation is to increase the temperature T, in order to make the product PV remains constant.

This relationship is also described by Gay-Lussac's Law, which states that the pressure of a fixed mass of a gas is directly proportional to its absolute temperature at a constant volume. This means that if the volume of the gas is decreasing, the pressure will remain constant, the only way to balance the equation is to increase the temperature.

So in conclusion, as the volume of a gas decreases at constant pressure, the temperature of the gas will increase.

it is not table salt

Explanation:

Table salt dissolves in water.

The mass of the tiny bubble of dry air containing 78% N₂ and 22 % O₂ is 28.88 g/mol.

The molecular masses of  N₂  and O₂  are 28 g/mol and 32 g/mol respectively.

Tiny bubbles found in dry air is the air inside a solid, liquid or surrounded by a colloid within a fluidic environment.

The approximate molecular mass of dry air is calculated as

=  [molecular mass of  N₂ × mass percentage of  N₂] +  [molecular mass of  O₂× mass percentage of  O₂] / mass percent of  N₂ + mass percent of   O₂

=[28×78]+[32×22]/78 +22

=28.88 g/mol

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The liquid dispensed from a burette is called titrant. What is burette? A burette is a laboratory equipment used in analytical chemistry to dispense volumes of liquid precisely and accurately. A burette is used to deliver a variable, measured amount of liquid, and it is calibrated to enable a scientist to determine the volume of liquid it contains to an accurate level. What is titrant? Titrant is a liquid substance with a known concentration. Titrant is used in analytical chemistry to determine the concentration of an analyte (a chemical species under analysis). The amount of titrant required to react with a particular quantity of analyte is measured, and the concentration of the analyte is calculated from this titration.

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True. The statement is true as a unit cell encapsulates the essential features and symmetry of the crystalline lattice and is repeated to form the complete lattice structure.

A unit cell is defined as the smallest repeating unit of a crystal lattice that, when repeated in three-dimensional space, generates the entire lattice structure. It represents the fundamental building block of the crystal lattice and contains all the structural information needed to describe the crystal. By translating the unit cell in three dimensions, the complete crystal lattice can be constructed.

The concept of a unit cell is fundamental in crystallography and is used to study and understand the arrangement and properties of crystalline materials. Different types of unit cells, such as cubic, tetragonal, and hexagonal, exist depending on the symmetry and arrangement of the lattice.

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The oxygen atoms in water (H2O) are less likely to bind metals than their hydrogen counterparts. This is due to the fact that oxygen has a higher attraction for electrons than hydrogen since it is more electronegative than hydrogen.

Hydrogen bonds form between nearby hydrogen and oxygen atoms of adjacent water molecules in the case of water. A bond called a hydrogen bond is produced by the attraction between individual water molecules.

Because oxygen has a stronger affinity for electrons than other atoms, like hydrogen, the electrons are drawn toward the oxygen atom, which in turn attracts hydrogen atoms.

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The balanced equation :

LiI(aq) + AgNO₃(aq) --> AgI(s) + LiNO₃(aq)

Given

Word equation

Required

Balanced equation

Solution

There are 3 ways to express a chemical equation:

Skeleton equation for reaction above :

LiI(aq) + AgNO₃(aq) ⇒ AgI(s) + LiNO₃(aq)

If we look at this reaction, all the cations and anions have a charge of 1 (+1 or -1) so the balanced reaction between the skeleton equation and the balanced equation is the same

1. An increase in concentration increases the speed of reaction.

2. When temperature increases, average speed of molecules increases.

3. Average kinetic motion of molecules in a solution can be measured by measuring the heat in the solution.

As concentration increases, number of molecules in the solution increase, hence the reaction becomes faster. Since these factors increase in value, the frequency of collisions between the reactant molecules in the solution will increase, so the probability of collisions in right orientation and with right energy will be higher. Increase in temperature will increase the average speed and kinetic energy of the  molecules in solution. At constant volume, increased speed of reactant molecules in the solution will increase the probability of collisions in right orientation and right energy. Average kinetic energy of molecules in a solution can be measured using the equation, E=kT , where k = Boltzmann constant.

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Answer:

Balanced forces do not cause a change in motion.

The result is no motion. Balanced forces can cancel each other out. Any time there is a balanced force, the object does not move.

Explanation:

Answer:

The result is no motion. Balanced forces can cancel each other out. Any time there is a balanced force, the object does not move.

Explanation: MARK MOST BRAINLIEST PLEASE

Identifying the example describes an anabolic or catabolic pathway:

Anabolism is a metabolic biochemical process in which simple molecules combine to form complex ones.

This process is endergonic, which means it is not spontaneous and requires energy to proceed. The resulting complex molecules are then employed to store energy in the form of ATP (Adenosine Tri Phosphate).

The breakdown of complex compounds is referred to as catabolism. Catabolism is the process by which complex compounds are broken down into their constituent elements (glucose, amino acids, and fatty acids), which serve as substrates for metabolic pathways.

The mechanisms involved in the synthesis of biomolecules required by the organism are referred to as anabolism. Catabolism refers to the processes involved in the breakdown of biomolecules in order to produce energy.

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Answer:

Divide the distance the object traveled by the time it took to get there.

Explanation:

To calculate the speed on an object, start by determining how far the object has traveled. Next, figure out the amount of time that the object took to cover that distance. Finally, divide the distance the object traveled by the time it took to get there. Don't forget to label the speed with the correct units of measurement.

Answer:

the second one

Explanation:

8 hydrogens per side

one sulfur per side

4 oxygen per side

8 iodine per side

Answer:

34.79 atm.

Explanation:

The following data were obtained from the question:

Initial pressure (P1) = 12 atm

Initial temperature (T1) = 25 °C

Final temperature (T2) = 591 °C

Final pressure (P2) =...?

Note: the volume of the tank is constant.

Next, we shall convert celsius temperature to Kelvin temperature. This can be obtained as follow:

Temperature (K) = Temperature (°C) + 273

T(K) = T (°C) + 273

Initial temperature (T1) = 25 °C

Initial temperature (T1) = 25 °C + 273 = 298 K.

Final temperature (T2) = 591 °C

Final temperature (T2) = 591 °C + 273 = 864 K.

Finally, we shall determine the new pressure as follow:

Initial pressure (P1) = 12 atm

Initial temperature (T1) = 298 K.

Final temperature (T2) = 864 K.

Final pressure (P2) =...?

P1/T1 = P2/T2

12/298 = P2/864

Cross multiply

298 x P2 = 12 x 864

Divide both side by 298

P2 = (12 x 864)/298

P2 = 34.79 atm.

Therefore, the new pressure is 34.79 atm.

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

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

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

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

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

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Answer:

Carbon monoxide (CO) is not a greenhouse gas because it does not trap heat in the Earth's atmosphere.

Explanation:

Answer:

Carbon monoxide (CO) is not a greenhouse gas.

Carbon monoxide is a colorless, odorless, poisonous gas, CO, that burns with a pale-blue flame, produced when carbon burns with insufficient air: used chiefly in organic synthesis, metallurgy, and in preparation of metal carbonyls, as nickel carbonyl.

Water vapor is a dispersion, in air, of molecules of water, especially as produced by evaporation at ambient temperatures rather than by boiling.

The chemical compound with the formula CH4 is methane, a hydrocarbon and primary component of natural gas. It is used in the manufacture of plastics and other commercially important organic chemicals. Methane is also a greenhouse gas that affects the earth's temperature and climate system.

Any of the gases whose absorption of solar radiation is responsible for the greenhouse effect, including carbon dioxide, methane, ozone, and the fluorocarbons.

The Greenhouse Effect is an atmospheric heating phenomenon, caused by short-wave solar radiation being readily transmitted inward through the earth's atmosphere but longer-wavelength heat radiation less readily transmitted outward, owing to its absorption by atmospheric carbon dioxide, water vapor, methane, and other gases; thus, the rising level of carbon dioxide is viewed with concern.

Answer:

Length

- centimetre

- millimetre

- kilometre

- meter

Mass

- gram

- kilogram

Capacity

- liter

- millilitre

I don't know why mass is there but hope this helps! :)

Ag (aq) → Ag⁺ (aq) + 1 e⁻ at the anode and NO₃ (aq) + 1e⁻ → NO₃⁻ at the cathode.

The half cell reaction are as follows:

In the anode oxidation always occurs, during the oxidation the reducing agent loses electrons, and its oxidation number increases.

NO₃ (aq) + 1e⁻ → NO₃⁻

In the cathode reduction always occurs, during the reduction the oxidizing agent gains electrons, and its oxidation number decreases.

Ag (aq) → Ag⁺ (aq) + 1 e⁻

Hence, Ag (aq) → Ag⁺ (aq) + 1 e⁻ occurs at the anode and NO₃ (aq) + 1e⁻ → NO₃⁻ occurs at the cathode.

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The equation that illustrates the relationship between wave velocity, frequency, and wavelength is: v = λ * f

v represents the wave velocity, which is the speed at which the wave travels through a medium. It is usually measured in meters per second (m/s).

λ (lambda) represents the wavelength of the wave, which is the distance between two consecutive points of similar phase on the wave. It is usually measured in meters (m).

f represents the frequency of the wave, which is the number of complete cycles or oscillations of the wave that occur in one second. It is usually measured in hertz (Hz).

The equation v = λ * f is known as the wave equation or the wave speed equation. It states that the wave velocity is equal to the product of the wavelength and the frequency of the wave.

This equation implies that as the frequency of a wave increases, the wavelength decreases, and vice versa, while keeping the wave velocity constant. In other words, if the frequency increases, the wave becomes more compressed and the distance between consecutive points of similar phase decreases.

On the other hand, if the frequency decreases, the wave becomes more spread out, and the distance between consecutive points of similar phase increases.

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