TRUE/FALSEWithin the enzyme-substrate complex bonds of the reactant breaks

transition metals are good conductors of heat and electricity and it can hammered  into shape easily and have high melting points.

Transition metal are the chemical elements which have valence electron and it can participate in chemical bonds formation process in two shells.

The position of the transition metals in periodic table is the middle portions of the long periods between the groups on the left-hand side and the groups on the right.

Most of the transition metals  are hard, strong, and lustrous and it has high melting and boiling points, good conductors of heat and electricity.

Some of the elements are important technologically are titanium, iron, nickel, and copper as they are used in electrical technology.

Other transition metals are used in useful alloys, with one another and with other metallic elements, dissolve in mineral acids, platinum, silver, and gold are some Nobel transition metal.

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Deprotonation of phenol by NaOHPhenol is a weak acid with a pKa value of 10, so it is not very acidic but it can be deprotonated with a strong base like sodium hydroxide (NaOH). The mechanism for this reaction is a simple acid-base reaction where NaOH acts as a base and removes the proton (H+) from phenol.

The curved arrow mechanism is shown below:Here, the Na+ ion comes in and removes the H+ ion from the O-H bond in phenol and forms water as a by-product. The major organic product is phenoxide ion (C6H5O−) which is formed after the deprotonation reaction.SN2 reaction of phenoxide with chloroethane Phenoxide ion is a good nucleophile because it has a negative charge on the oxygen atom which is able to attack the positively charged carbon atom in chloroethane. The mechanism for this reaction is a nucleophilic substitution (SN2) reaction where the phenoxide ion acts as a nucleophile and replaces the chloride ion in chloroethane. The curved arrow mechanism is shown below:Here, the phenoxide ion attacks the carbon atom in chloroethane, and the chloride ion leaves as a leaving group. The major organic product is ethyl phenyl ether (C6H5OC2H5) which is formed after the SN2 reaction.

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answer:

in heat transfer, as the fluid flows along the tube, the wall layers are heated or cooled. temp. variation occurs in the wall layers.

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To draw a Lewis structure for an atom, one must know number of valence electrons. A Lewis structure is indeed a diagram that depicts a molecule's covalent bonds as well as lone electron pairs.

Lewis electron dot structures, Lewis structure diagrams, as well as electron dot structures are all names for Lewis structures. All of these terms relate to the same type of diagram, that is used to represent the position of bonds including electron pairs.

A Lewis structure is indeed a diagram that depicts a molecule's covalent bonds as well as lone electron pairs. The octet rule underpins Lewis structures. While Lewis structures were valuable for illustrating chemical bonding, they lack aromaticity and do not adequately depict magnetic behavior. To draw a Lewis structure for an atom, one must know number of valence electrons.

Therefore, to draw a Lewis structure for an atom, one must know number of valence electrons.

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Answer:

iron (III) oxide is a gas

Chemical reaction characteristics. A shift in colour. a shift in the temperature. State change. creation of new materials.

Flammability, cytotoxicity, acidity, reactivity (of various kinds), and heat of combustion are a few examples of chemical qualities. Rust, for instance, is created when iron and oxygen interact in the when water is present; chromium does not oxidise ([link]).

The five basic types of chemical reactions are combination, decomposition, one, double replacement, and combustion. By analysing the reactants and products, you can assign a reaction to one of these categories.

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The proton is abstracted from the CH3H20+ as the initial step in the synthesis of the hemiacetal for a particular ketone. CH3H20+.has a positive charge on the oxygen atom that makes it unstable; by taking away one hydrogen atom, the positive charge will be removed and the oxygen atom will become stable. The subsequent step is the nucleophilic addition reaction of methanol onto ketone, which is made possible by the positive charge on the ketonic oxygen polarizing the bond. To obtain the finished product, a proton is removed in the last step.

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1) Noble gases. Elements in the periodic table are organized in groups. We can find the noble gases in the eighteenth group (column).

2) Zoom in to the right part of the periodic table.

We can see in this image that Krypton (Kr), Neon, and Argon ARE noble gases.

Iron is NOT a noble gas.

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The root mean square speed of Cl2(g) molecules under the same conditions is found to be 648 m/s. The root means square speed is a measure of the speed of particles in a gas. It is calculated by taking the square root of the average of the squared speeds of each particle in the gas.

The formula for calculating the root mean square speed of a gas is sqrt(3RT/M), where R is the gas constant, T is the temperature in Kelvin, and M is the molar mass of the gas.

In this case, we are given the average kinetic energy of the gas and we can use the kinetic energy formula, KE=1/2MV^2, to calculate the root mean square speed of Cl2(g) molecules. Since the molar mass of Cl2 is 70.91 g/mol, we can use this value and the given kinetic energy to calculate the root mean square speed.

After calculations, the root mean square speed of Cl2(g) molecules under the same conditions is found to be 648 m/s. This means that on average, the Cl2(g) molecules are moving at a speed of 648 meters per second at the given temperature and conditions.

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Answer:

C

Explanation:

I think that this answer Is more personal but they should try to limite animal cruelty in their research.

Answer:

C

Explanation:

Explanation:

Which is a pure substance?

1. soda

2. gasoline

3. salt water

4. carbon dioxide

carbon dioxide

Bromine, a liquid at room temperature, has a boiling point of 58°C and a melting point of -7.2°C. Bromine can be classified as a

1. compound.

2. impure substance.

3. mixture.

4. pure substance.

pure substance.

Answer:

the answer is

Explanation:

Sugar and water make a homogeneous mixture (the same proportions of its components throughout any given sample).

To determine the limiting reactant, we need to compare the moles of each reactant and their stoichiometric coefficients in the balanced equation. The balanced equation for the reaction is:

C + SiO2 -> SiC + CO2

First, we convert the masses of carbon (C) and silicon dioxide (SiO2) to moles using their respective molar masses. The molar mass of carbon (C) is 12.01 g/mol, and the molar mass of silicon dioxide (SiO2) is 60.08 g/mol.

Moles of C = mass of C / molar mass of C = 2.50 g / 12.01 g/mol = 0.208 mol C

Moles of SiO2 = mass of SiO2 / molar mass of SiO2 = 2.50 g / 60.08 g/mol = 0.0416 mol SiO2

Next, we compare the moles of each reactant to their stoichiometric coefficients in the balanced equation:

From the balanced equation: 1 mol C reacts with 1 mol SiO2

Since the ratio of moles of C to moles of SiO2 is 0.208 mol C : 0.0416 mol SiO2, we can see that the mole ratio is 5:1. Therefore, for every 5 moles of carbon, 1 mole of SiO2 is required.

Since we have equal moles of carbon and silicon dioxide (0.208 mol C and 0.0416 mol SiO2), we can see that the limiting reactant is SiO2. It is the limiting reactant because there is not enough SiO2 to react completely with the available carbon.

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Balanced nuclear equation by giving the mass number, atomic number, and element symbol for the missing species is ¹⁰B + ⁴He → ¹⁴N + 1¹H

The missing species in the given nuclear equation is ¹⁴N and 1¹H.

Let's write the mass number, atomic number, and element symbol for the missing species:

Mass number of ¹⁴N = 14

Atomic number of ¹⁴N = 7

Element symbol of ¹⁴N = N (since the atomic number of nitrogen is 7)

Mass number of 1¹H = 1Atomic number of 1¹H = 1

Element symbol of 1¹H = H (since the atomic number of hydrogen is 1)Therefore, the main answer of the balanced nuclear equation is: ¹⁰B + ⁴He → ¹⁴N + 1¹H.

In order to balance a nuclear equation, it is essential that the total mass number and the total atomic number is conserved.

Balancing nuclear equations requires both the knowledge of atomic structure as well as knowledge of the laws of conservation of mass and charge.

A balanced nuclear equation is essential in understanding nuclear reactions and in predicting the outcomes of nuclear reactions.The balanced nuclear equation for the given nuclear equation is:¹⁰B + ⁴He → ¹⁴N + 1¹H. Conclusion:Thus, the missing species in the given nuclear equation is ¹⁴N and 1¹H.

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Answer:

Explanation:

Meter/ Second

Answer:

Meter/Second North!Brainliest pls :)

Explanation:

Answer:

Half life of radioactive isotope is 8.1 hours.

Explanation:

Given data:

Total mass of sample = 500 g

Amount left after decaying 24.3 hours = 62.5 g

Half life of element = ?

Solution:

First of all we will calculate the number of half lives.

at time 0 = 500 g

AT first half life = 500g/2 = 250 g

At second half life = 250g/2 = 125 g

At third half life = 125g/2 = 62.5 g

Total half life taken = 3

Half life = time elapsed/ number of half lives

Half life = 24.3h /3

Half life = 8.1 hours

Half life of radioactive isotope is 8.1 hours.

1) H2SO4(aq) + Ba(OH)2(aq) → H2SO4(aq) + Ba(OH)2(aq)

2)2HF(aq) + Li2CO3(aq) → 2LiF(aq) + H2O(l) + CO2(g)

The net ionic equation for the reaction between HF(aq) and Li2CO3(aq) is H+(aq) + F-(aq) + CO3^2-(aq) → H2O(l) + CO2(g). In this equation, the soluble compounds are shown as their dissociated ions, and the spectator ions (Li+) are excluded from the equation.

In this equation, the soluble compounds are shown as their dissociated ions, and the spectator ions (Li+) are excluded from the equation.

The given equation is already balanced and written correctly. It represents a chemical reaction between sulfuric acid (H2SO4) and barium hydroxide (Ba(OH)2), both in aqueous solutions.

The equation H2SO4(aq) + Ba(OH)2(aq) → H2SO4(aq) + Ba(OH)2(aq) represents the reaction between sulfuric acid and barium hydroxide in aqueous solutions. The equation is already balanced and written correctly.

2HF(aq) + Li2CO3(aq) → 2LiF(aq) + H2O(l) + CO2(g)

To express the given equation as a net ionic equation, we need to identify the soluble compounds that dissociate into ions and exclude the spectator ions (ions that appear on both sides of the equation and do not participate in the reaction).

The ionic compounds that dissociate into ions in the given equation are:

HF(aq) → H+(aq) + F-(aq)

Li2CO3(aq) → 2Li+(aq) + CO3^2-(aq)

LiF(aq) → Li+(aq) + F-(aq)

The net ionic equation only includes the ions involved in the chemical change:

H+(aq) + F-(aq) + CO3^2-(aq) → H2O(l) + CO2(g)

The net ionic equation for the reaction between HF(aq) and Li2CO3(aq) is H+(aq) + F-(aq) + CO3^2-(aq) → H2O(l) + CO2(g). In this equation, the soluble compounds are shown as their dissociated ions, and the spectator ions (Li+) are excluded from the equation.

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Answer:

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

\(volume = \frac{mass}{density} \\\)

From the question we have

\(volume = \frac{935}{7.8} \\ = 119.871794...\)

We have the final answer as

Hope this helps you

Answer:

c good luck with the answer

Answer:

Platelets

Explanation:

Those are there to heal any wounds to keep the blood from leaking through. So if you ever stop bleeding, thats why

Answer:

(−ΔH°1)+12(−ΔH°2)+(ΔH°3)+(ΔH°4)

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Answer:

A)27.6g H2O x (1 mole H2O/ 18.02g H2O) x (1 mole H2/ 2mole H2O)

= 0.766 mol H2 x 6.022 x 10^23

= 4.61 x10^23 molecules

B)12.9g H2O x (1 mole H2O/ 18.02g H2O) x (2 mole Na / 2mole H2O)

=0.716 mol Na x 6.022x 10^23

= 4.31 x 10^23 atoms

Explanation:

I hope it's help

Answer:

84 pt =__50.4399___ qt

5.0 gal =___18.9271__ L​

Explanation:

Have A Wonderful Day!!

Answer: 84 pints = 42 quarts

5.9 gallons = 1.89271

Explanation:

Less than 6. 0 grams of copper i.e. 0.36 g is formed, and some aluminum is left behind in the reaction ingredients.

The amount of copper made is calculated from the balanced equation of the reaction.

The balanced equation :

3 CuCl2 + 2 Al → 2 AlCl3 + 3 Cu

molar mass of CuCl₂ = 132 g/mol

molar mass of Al = 27.0 g

molar mass of Cu = 64.0 g

moles of aluminium = 0.50 / 27 = 0.018 moles

moles of CuCl₂ produced = 0.75/132 = 0.00568 moles

So, CuCl₂ is acting as the limiting reagent in the reaction.

3 moles of CuCl₂ makes 3 moles of Cu

Similarly,

0.00568 moles CuCl₂ will make 0.00568 moles of Cu

Mass of Cu produced = 0.00568 * 64 = 0.36 g

So, Less than 6. 0 grams of copper is formed, and some aluminum is left in the reaction mixture as CuCl2 acts as limiting reagent.

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Answer:

For A: The molarity is the solution 9.706 M

For B: The molarity of the solution is 10.91 M.

For C: The molarity of the solution is 1.78 M.

Explanation:

Molarity is defined as the amount of solute expressed in the number of moles present per liter of solution. The units of molarity are mol/L.

The formula used to calculate molarity:

\(\text{Molarity of solution}=\frac{\text{Number of moles of solute}}{\text{Volume of solution (L)}}\)                 ......(1)

For A:

Number of moles = 3.30 moles

Volume of solution = 0.340 L

Plugging values in equation 1:

\(\text{Molarity of solution}=\frac{3.30 mol}{0.340 L}=9.706 mol/L\)

For B:

Number of moles = 6.00 moles

Volume of solution = 550 mL = 0.550 L        (Conversion factor: 1 L = 1000 mL)

Plugging values in equation 1:

\(\text{Molarity of solution}=\frac{6.00 mol}{0.550 L}=10.91 mol/L\)

For C:

Number of moles = 0.0160 moles

Volume of solution = 9.00 mL = 0.009 L

Plugging values in equation 1:

\(\text{Molarity of solution}=\frac{0.0160 mol}{0.009 L}=1.78 mol/L\)

As the kb value for a base increases, base strength increases is true statement. The correct answer is A.

The base is stronger the lower the Kb number. Therefore, base strength grows as the Kb value for a base increases.

How readily a base may accept a proton from an acid is shown by its Kb value. The base gains base strength as the Kb value rises because it can receive protons with greater ease. This implies that the base strength grows as the Kb number increases.

Therefore,  if the kb value for a base increases, base strength increases is true statement.

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Answer:

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

volume = 45 cm³ = 45 mL

We have

mass = 0.65 × 45

We have the final answer as

Hope this helps you