which of the following is false about crystal field theory? group of answer choices weak field ligands absorb purple light. the color of a coordination compound is the color of light absorbed.

The savanna is characterized by grasses and small or dispersed trees, along with a diverse community of organisms that interact to form a complex food web. Carnivores (lions, hyenas, leopards) feed on herbivores (impalas, warthogs, cattle) that consume producers (grasses, plant matter).

Savanna is grassland with scattered individual trees. Savannas of one sort or another cover almost half the surface of Africa (about five million square miles, generally central Africa) and large areas of Australia, South America, and India. Climate is the most important factor in creating a savanna.

Characteristics of Natural Vegetation in savanna

Many trees are Umbrella- shaped to shield their roots from the scorching heat. Trees are drought resistance trees such as Baobab. Trees are deciduous in nature that is they shed their leaves during the dry season

Answer:

B The United States

Explanation:

most other countries use the C to measure their temperature

To form a dipeptide between Alanine and Leucine, we have to join the carboxyl group (COOH) of Alanine with the amino group (NH₂) of Leucine via a peptide bond. The resulting molecule will have a zwitterionic form. The zwitterionic form of the dipeptide will have both a positive and a negative charge.

A dipeptide is a molecule made up of two amino acid residues joined together via a peptide bond. A peptide bond is a bond between the amino group (NH₂) of one amino acid and the carboxyl group (COOH) of another amino acid. Amino acids are the building blocks of proteins. Alanine and Leucine are two of the twenty common amino acids found in nature.

A zwitterion is a molecule that has a positive charge on one part of the molecule and a negative charge on another part of the molecule. Zwitterions are electrically neutral overall. They are formed when a molecule that has both acidic and basic functional groups is dissolved in a solvent. The acidic and basic groups react with each other to form a neutral molecule that has both positive and negative charges. The zwitterionic form of an amino acid is the form that is found in proteins.

The chemical formula for Alanine is C₃H₇NO₂, and the chemical formula for Leucine is C₆H₁₃NO₂. To form a dipeptide between Alanine and Leucine, we have to join the carboxyl group (COOH) of Alanine with the amino group (NH₂) of Leucine via a peptide bond. The resulting molecule will have a zwitterionic form. The zwitterionic form of the dipeptide will have both a positive and a negative charge.

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The reaction which displays an example of an arrhenius base is

NaOH(s) → Na⁺(aq) + OH⁻(aq).

According to the Arrhenius theory, those substance which gives H⁺ ion to the aqueous solution is acid and which gives OH⁻ ion to the aqueous solution is known as base.

All given chemical reactions will display an arrhenius acid, but only one reaction display as a arrhenius base as they gives OH⁻ ion to the aqueous solution and that reaction will be:
NaOH(s) → Na⁺(aq) + OH⁻(aq)

Hence option (1) is correct.

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Answer:

A: NaOH(s) ---> Na+(aq) + OH–(aq)

Explanation:

This means that for every liter of water, there is 6.15 moles of the substance dissolved in it.

Substance is a concept that refers to a physical material or thing that has mass and occupies space. It is a fundamental concept of physics that applies to all physical and visible things in the universe. In philosophy, substance is a primary category of ontology that refers to the physical or material existence of things.

The molarity of the saturated solution can be calculated by dividing the solubility (360 g/L) by the molar mass of the substance (58.5 g/mol).
The molarity of the saturated solution is thus 6.15 mol/L.
This means that for every liter of water, there is 6.15 moles of the substance dissolved in it.

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Answer:asexual- Energy is not required to find a mate. Offspring are genetic clones. A negative mutation can make asexually produced organisms susceptible to disease and can destroy large numbers of offspring. Some methods of asexual reproduction produce offspring that are close together and compete for food and space.

Explanation:During sexual reproduction the genetic material of two individuals is combined to produce genetically diverse offspring that differ from their parents.

Answer:

Acid-base indicators are generally weak proteolytic that change color in solution according to the pH. The acid-base equilibrium of a weak acid type of indicator (HI) in water can be represented as. [I] The acid, HI, and the conjugate base, I−, have different colors. The equilibrium expression for this process is.

The use of cold methanol is important because it is used to recrystallize or solidify the product.

Since, ice bath is also used in nitration of methyl benzoate because in this reaction the concentrated acid like sulfuric acid is used with water and it is very exothermic.

The formation pure solid from the impure solid compound by mixing with hot solvent and form saturated solution. Now, this solution as cools and pure crystal grows when solubility of the compound decreases. This whole process is called re-crystallization.

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Answer:

10.81 amu

Explanation:

The average atomic mass of Boron can be calculated as follows :

\(A=19.9\%\ \text{of}\ 10.01294 +80.1\%\ \text{of}\ 11.00931\\\\A=\dfrac{19.9}{100}\times 10.01294 +\dfrac{80.1}{100}\times 11.00931\\\\A=10.81\ \text{amu}\)

So, the average atomic mass of boron is 10.81 amu.

Answer:

it will be same as before

Answer:

The mass on the balance stays the same

Explanation:

.

Answer:

The answer is 0.01790670606142. We assume you are converting between moles Iron and gram.

Explanation:

The mass of 0.083 moles of iron to the nearest tenth is 0.4635135 grams.

Mass is defined as the amount of substance contained in a particle or object as a dimensionless quantity. An object's mass is the entire amount of matter it contains. A scalar quantity, it. By using beam balance, it is measured. The object's mass is constant everywhere it is. The inertia of an object allows us to calculate its mass.

One carbon-12 atom weighs exactly 12 atomic mass units, which equals its atomic mass. One mole of carbon-12 atoms weighs exactly 12 grams; this is known as the molecular mass of carbon-12.

Molar mass of iron is 55.847 moles

Molar mass = mass/mole

Mass = molar mass x mole

Mass = 55.845 x 0.083

Mass = 0.4635135 grams.

Thus, the mass of 0.083 moles of iron to the nearest tenth is 0.4635135 grams.

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Answer: 97,212,960,000 J/s

Explanation:

Power = Energy ÷ Time

So,

Energy = Time × Power

First convert 3.6 hrs into seconds

3.6 × 60

216 mins

216 × 60 = 12,960 seconds.

Convert 7501kW into Watts.

7501 × 1000 = 7,501,000

Substitute the values:

Energy = 12,960 × 7,501,000

Energy = 97,212,960,000 Joules per second.

Big number. But you did leave a 7501 kilo watt appliance running for over 3 hours..

The removal of gas from a closed container via a pump is a nonspontaneous process.

The nonspontaneous process among the options given is the removal of gas from a closed container via a pump. Nonspontaneous processes require external work or energy input to occur, unlike spontaneous processes which happen naturally without any external influence. In this case, using a pump to remove gas from a closed container requires external energy, making it a nonspontaneous process. The other options, such as air expanding to fill its container, the dissolution of a soluble salt in water, and the escape of gas through a small hole, are all spontaneous processes as they occur naturally without any external work.

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Answer:

replacement

Explanation:

Because the No and The Ci switch but it might not be the answer but I know that they have to switch and replacement sounds like the best answer

Answer:

Oxidation

Explanation:

Hope this helps :)

The oxidation numbers of each atom in the given reaction are as follows:

Na: +1, S: -2, Ni: +2, Cl: -1

In the given equation,Na2S(aq) + NiCl2(aq) → 2NaCl(aq) + NiS(s)

To assign oxidation numbers to the atoms in the reactants.

In the compound Na2S, Sodium (Na) has an oxidation number of +1, and sulfur (S) has -2 as it's oxidation number.

In the compound NiCl2, Nickel (Ni) has an oxidation number of +2, and Chlorine (Cl) has an oxidation number of -1.

Oxidation numbers in products are also assigned in the same manner.

2NaCl is formed as a result of combining two Na+ ions and two Cl- ions.

The oxidation state of both Na and Cl is +1 and -1, respectively.

NiS(s) is formed by combining Ni2+ and S2- ions.

The oxidation state of nickel in NiS is +2, while the oxidation state of sulfur is -2.

Thus, the oxidation states of Na, S, Ni, and Cl are +1, -2, +2, and -1, respectively.

The oxidation numbers of each atom in the given reaction are as follows:

Na: +1S: -2Ni: +2Cl: -1

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ethanol, c2h5oh, is used as a fuel for motor vehicles, particularly in brazil. the density of ethanol is 0.7893 g/ml, enthalpy of combustion of IL ethanol -2.11 X10 "KJ L.

heat absorbed per litre & calculated as h1=∆hrn/v= =-1234.8 kJ mol/0.058368 L molt= -21155.42 kJ L = =-211 X I0^4 KJL.enthalpy of combustion of IL ethanol -2.11 X10 "KJ L. The heat energy released whenever one mole of a material burns totally in oxygen is characterised as the enthalpy of combustion. A product's heat of combustion, also recognised as its calorific value as well as energy content, can be defined as the quantity of heat freed when a known quantity of the substance is burned. The enthalpy of combustion is the enthalpy of a specific compound's combustion reaction. The enthalpy of solution is the heat capacity of disbanding a chemical into solution, which can be expressed as a reaction.

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A photon has a frequency of 2.68 × \(10^6\) Hz then the energy of a photon is \(1.78\times10^{-27}\text{J}\).

What is meant by Planck's equation?

Planck's energy–frequency relation, or Planck's equation, gives the relationship between the energy of a photon and frequency. This equation is given by,

E = hv

Where, E be the energy of a photon

h be the Planck constant

v be the frequency

Given:

Frequency is 2.68 × \(10^6\)

Planck's constant is 6.63 × \(10^{-34}\) Js

The energy of a photon is given by,

E = hv

substitute the values in the above equation, we get

= 6.63 × \(10^{-34}\) Js × 2.68 × \(10^6\) Hz

simplifying the above equation, we get

= 1.78 × \(10^{-27}\) J

The energy of the photon is 1.78 × \(10^{-27}\) J.

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The periodic properties of the d-block elements differ from the main group elements in that they are less sensitive and less reactive.

The periodic table is divided into blocks; s-block, p-block, f-block, and d-block. The d-block elements are also known as transition metals.

The s and p-block elements are known as the main group elements. Compared to these, the d-block elements have some different properties because of their partially filled d-orbitals.

However, the d-block elements still have many similar properties. These elements can still displace hydrogen from dilute acid and some of them can react with water under appropriate conditions.

The first row of these transition metals are found to be more reactive than the second and third row. However, they are not as reactive as the s-block and p-block elements.

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Answer:

0.289J of heat are added

Explanation:

We can relate the change in heat of a substance with its increasing in temperature using the equation:

q = m*ΔT*S

Where Q is change in heat

m is mass of substance (In this case, 0.0948g of water)

ΔT = 0.728°C

S is specific heat (For water, 4.184J/g°C)

Replacing:

q = 0.0948g*0.728°C*4.184J/g°C

q = 0.289J of heat are added

Answer:

Discharge

Explanation:

this is the answer

Answer:

B is incorrect

Explanation:

Ocean are made of salt water which is undrinkable therefore they are not any type of drinking water source.

The reaction that is exothermic is as follows: None of the reactions are exothermic (option D).

Exothermic reaction is a kind of reaction that releases energy in the form of heat or that releases heat during its formation, and absorbs it during its decomposition.

An exothermic process releases heat, causing the temperature of the immediate surroundings to rise.

According to this question, the chemical equation that exemplifies exothermic reaction is as follows:

Therefore, none of the options above are exothermic.

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Reaction B is exothermic according to the thermochemical equation provided. Option B is he correct answer.

When energy is transferred to the surroundings, this is called an exothermic reaction, and the temperature of the surroundings increases. Examples of exothermic reactions include: combustion reactions. many oxidation reactions.

According to the thermochemical equation provided, the reaction B is exothermic. In this reaction, the mercury oxide (HgO) reacts with heat to produce mercury (Hg) and oxygen (O₂) gas. The overall reaction gives out heat, making it exothermic.

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Answer:

2C3H6 + 9O2 => 6CO2 + 6H20

Explanation:

2C3H6 + 9O2 => 6CO2 + 6H20

C = 6

H = 12

O = 18

The egg would be found to float on the sea water which is denser but would tend to sink in the fresh water which is less dense.

The term salinity has to do with the amount of salt that is present. A solution is very saline if there is a high concentration of salt in the solution. We know that sea water has a greater density than water. The reason why the density of the sea water is greater than the density of the pure water is that the sea water contains dissolved salts.

Now, we know that given the fact that the sea water is denser than the fresh water, it is easier for an object to sink in the fresh water than it does in the sea water which is denser. This is even observed in ships as there is a greater tendency to remain afloat in sea water than in salt water.

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Answer:

Intermolecular Forces: Review. Electronegativity is a measure of an atom's ability to attract the shared electrons of a covalent bond to itself. If atoms bonded together have the same electronegativity, the shared electrons will be equally shared.

Explanation:

hope this helped

When refrigerant is in a high-pressure, high-temperature state, it enters the metering device. The refrigerant is then changed to a low-pressure, low-temperature state as a result of the metering device. As a result, the refrigerant will expand and the heat will be absorbed as the temperature decreases.

The metering device is a component in a refrigeration or air conditioning system that ensures that the correct amount of refrigerant is delivered to the evaporator. The device functions as a flow control, reducing the refrigerant's pressure before it reaches the evaporator. The metering device may be a simple capillary tube, an orifice, an automatic expansion valve (AEV), or a thermostatic expansion valve (TXV). The capillary tube is the simplest and least expensive metering device. It's just a small copper tube that's thin and long. The AEV is a constant pressure valve that maintains a consistent pressure drop across it, allowing it to regulate the refrigerant flow. A thermostatic expansion valve is the most sophisticated metering device, as it can sense the temperature at the evaporator outlet and adjust the refrigerant flow accordingly.

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