How is raw steel made and how is it different from raw iron?

Based on the given information, the two reactants that would give the described product via a Suzuki coupling are:

An alkyne where carbon 1 is bonded to a benzene ring and carbon 2 is bonded to hydrogen.

An alkene where carbon 1 is bonded to bromine and carbon 2 is bonded to benzene. The stereochemistry is cis.

The Suzuki coupling is a widely used cross-coupling reaction that involves the palladium-catalyzed cross-coupling of an organoboron compound (such as a boronic acid) with an organic halide or pseudo-halide. In this case, the reactants that can undergo the Suzuki coupling are the alkyne and the cis-alkene described above.

The alkene and alkyne provide the necessary carbon-carbon bond formation, while the benzene rings and hydrogens ensure the desired connectivity in the product. The palladium tetrakis triphenyl phosphine catalyst, heat, and sodium carbonate facilitate the coupling reaction, resulting in the formation of the biaryl product with the specified stereochemistry.

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Answer:

P₂ = 113.49 kPa

Explanation:

Given that,

Initial pressure, P₁ = 101 kPa

Initial temperature, T₁ = 10.0°C = 283 K

Final temperature, T₂ = 45°C = 318 K

The relation between pressure and temperature is given by :

\(\dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}\)

Where

P₂ is the new pressure

So,

\(P_2=\dfrac{P_1T_2}{T_1}\\\\P_2=\dfrac{101 \times 318}{283 }\\\\P_2=113.49\ kPa\)

So, the new pressure is equal to 113.49 kPa.

Answer:

B. hot to cold

Explanation:

Energy wants to reach thermal equilibrium (which is basically just balanced temperature) so it will move from hot to cold to make the cold object warmer and the hot object cooler.

The slower-moving water molecules are hit by the faster-moving metal atoms when the hot metal washers are submerged in the room-temperature water, which causes the water molecules to travel a little more quickly.

The heat source is employed to convert liquid water to vapour, which is the cause. Latent heat of vaporisation is the name given to this heat.

Even if heat is continuously applied, the temperature doesn't change during boiling because all of the heat energy is expended in converting the liquid state of the water to the gaseous water vapour.

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Answer:

26 protons, 30 neutrons, and 26 electrons

Explanation:

There are total  26 protons, 30 neutrons and 26 electrons in an Fe atom.

The electron has a negative charge. The symbol for electrons is (e–). An electron’s atomic mass unit is (5.45×10–4). The orbits of electrons are located outside the nucleus of the atoms.

A proton has a positive charge. (p+) is the symbol for protons. The proton’s atomic mass unit is 1. Protons are found within the nucleus of atoms. A proton has a mass of (1.672×10–27 kg).

A neutron is either neutrally charged or uncharged. The symbol for neutrons is (n⁰). The neutron’s atomic mass unit is one. Neutrons are also found inside the nucleus.

These all combinedly makes an atom, hence  there are total  26 protons, 30 neutrons and 26 electrons in an Fe atom.

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The wavelength of an electron can be calculated using the formula: wavelength = h / (mass of electron * velocity). Since kinetic energy is equal to the mass of the electron multiplied by the velocity squared, we can also calculate wavelength by using the formula: wavelength = h / sqrt(2mass of electron kinetic energy).

To convert the kinetic energies given in electron volts (eV) to Joules (J), you can use the formula: 1 eV = 1.6 x 10^-19 J

(a) 20.0 eV = 3.2 x 10^-18 J, wavelength = h / sqrt(2mass of electron3.2 x 10^-18 J) = 2.4 x 10^-12 m or 2.4 pm (picometers)

(b) 200 eV = 3.2 x 10^-17 J, wavelength = h / sqrt(2mass of electron3.2 x 10^-17 J) = 2.4 x 10^-11 m or 24 pm

(c) 2.00 keV = 3.2 x 10^-14 J, wavelength = h / sqrt(2mass of electron3.2 x 10^-14 J) = 2.4 x 10^-8 m or 2.4 nm

(d) 20.0 keV = 3.2 x 10^-13 J, wavelength = h / sqrt(2mass of electron3.2 x 10^-13 J) = 2.4 x 10^-7 m or 24 nm

(e) 0.200 MeV = 3.2 x 10^-11 J, wavelength = h / sqrt(2mass of electron3.2 x 10^-11 J) = 2.4 x 10^-5 m or 0.24 nm

(f) 2.00 MeV = 3.2 x 10^-10 J, wavelength = h / sqrt(2mass of electron3.2 x 10^-10 J) = 2.4 x 10^-4 m or 2.4 nm

A lower energy electron will have a longer wavelength, while a higher energy electron will have a shorter wavelength. To study the crystal structure of NaCl, you would need to use a technique such as X-ray diffraction, which typically uses X-rays with energies in the range of a few keV to a few tens of keV. Based on this, 2.00 keV and 20.0 keV energies are most suited for study of the NaCl crystal structure.

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The direction of a reaction if the reaction quotient QC is greater than the equilibrium constant Kc is in the direction of reactants.

The reaction quotient Qc can be used to explain which direction the reaction will be shift to reach the equilibrium.  The Kc is the equilibrium constant.

If Kc > Qc, the reaction will be proceed the forward reaction, converting reactants in to the products.

If Kc < Qc, the reaction will be proceed in the reverse direction, it  converting products in to the reactants.

If Qc = Kc then the system is already at the equilibrium.

The reaction quotient (Q) is measurement of the relative amounts of the products and the reactants present during the reaction at the particular point in the time.

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Answer:

neutron

Explanation:

Hopefully this will help you!!!!

When the pressure of the 1.0 L balloon increases to 2,000 kPa, the volume will be 510 L.

The ideal gas law also states that if the temperature of the gas is increased while the pressure is held constant, the volume of the gas will increase. This is because the increased temperature will cause the gas particles to move faster, and the faster they move, the more space they will take up, resulting in an increase in volume.

Therefore, if the temperature of the 1.0 L balloon is increased while the pressure is held constant, the volume of the gas will increase.

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Answer:

I think it the second one adding external weight or the third one

Explanation:

I could never. im more like the last one

I'm really sorry if this was no help

hope it helps :-).

Answer:

C. An electron can only change its mass in quantized amounts when it gains or loses energy.

Explanation:

Answer:Label the parts of this wave.

A:  

✔ crest

B:  

✔ amplitude

C:  

✔ trough

D:  

✔ wavelength

Explanation:

Answer:

A- crest

B- Amplitude

C- Trough

D- wavelength

Explanation:

Just did it on Edge Trust me 2022

Answer:

b

Explanation:

temporary bc it's have time so the water can cycle

Answer: C

Explanation:

Reaction 1 starts off with one mole of reactant and produces 2 moles of product. The increase in the number of moles, along with the fact that aqueous compounds are more disordered than solid compounds, increases the disorder and thus entropy.

Reaction 2 starts off with 1 mole of solid and produces 1 mole of solid and one mole of gas. The increase in the number of moles, along with the fact that gases are more free and disordered than solids, increases the disorder and thus entropy.

Answer:

Charge is conserved due to the groups in which Lithium and Chlorine are located in the periodic table of the elements.

Explanation:

In the reaction \(Li + Cl - > LiCl\), we can examine the groups in which Li and Cl are found in the periodic table of the elements. Lithium appears in Group 1A, or the alkali metals group, indicating that it carries a charge of +1. Chlorine appears in Group 7A, or the halogen group, indicating that it carries a charge of -1. Because LiCl's constituent elements carry the same charges as previously mentioned, LiCl will have an overall charge of 0.

The chemical equation can then be rewritten as \(Li^{+} + Cl^{-} - > LiCl\), which, if looking at the individual charges of Li and Cl in lithium chloride, becomes \(Li^{+} + Cl^{-} - > Li^{+}Cl^{-}\). Adding the charges on the reactant and product sides of this chemical equation gives us zero in both locations, meaning that we have a charge of 0 on the reactant side and a charge of 0 on the product side. This indicates that charge is conserved in this reaction.

Another way to look at this is expressed in the valence electrons of Li and Cl. Li has an electron configuration of \(1s^{2}2s^{1}\), where the n = 2 electron shell has one of eight total electrons needed to fill the valence shell. This means that Li will easily lose one electron in order to have an electron configuration where the n = 1 electron shell is full, \(1s^{2}\), and become the \(Li^{+}\) ion. Similarly, Cl has an electron configuration of \(1s^{2}2s^{2}2p^{6}3s^{2}3p^{5}\) (or \([Ne]3s^{2}3p^{5}\)), meaning that the n = 3 electron shell is one electron away from becoming complete. Cl will easily gain one electron to have the electron configuration \([Ne]3s^{2}3p^{6}\) (or \([Ar]\)) in order to have an electron configuration where the n = 3 electron shell is full, \(3s^{2}3p^{6}\), and become the \(Cl^{-}\) ion. Thus, when Li and Cl bond, Li will lose the electron \([1, 0, 0, +\frac{1}{2}]\) and transfer it to Cl, where it will become the electron \([3, 1, 1, -\frac{1}{2}]\), thus conserving charge, as there is an equal total number of electrons before and after the reaction.

Answer: A row is horizontal and a group is vertical on the periodic table.

Answer:

The pH of the solution is 11.48.

Explanation:

The reaction between NaOH and HCl is:

NaOH  +  HCl  →  H₂O  +  NaCl

From the reaction of 3.60x10⁻³ moles of NaOH and 5.95x10⁻⁴ moles of HCl we have that all the HCl will react and some of NaOH will be leftover:

\( n_{NaOH}} = n_{i_{NaOH}} - n_{HCl} = 3.60 \cdot 10^{-3} moles - 5.95 \cdot 10^{-4} moles = 3.01 \cdot 10^{-3} moles \)

Now, we need to find the concentration of the OH⁻ ions.

\( [OH^{-}] = \frac{n_{NaOH}}{V} \)

Where V is the volume of the solution = 1.00 L                

\( [OH^{-}] = \frac{n_{NaOH}}{V} = \frac{3.01 \cdot 10^{-3} moles}{1.00 L} = 3.01 \cdot 10^{-3} mol/L \)

Finally, we can calculate the pH of the solution as follows:

\( pOH = -log([OH^{-}]) = -log(3.01 \cdot 10^{-3}) = 2.52 \)

\( pH + pOH = 14 \)

\( pH = 14 - pOH = 14 - 2.52 = 11.48 \)

Therefore, the pH of the solution is 11.48.

I hope it helps you!

Answer:

24

Explanation:

Answer:

is you'r question correctly?

or not

Answer:

is this a poem or something?

Answer:

0.5 M

Explanation:

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

Mass of NaOH = 80 g

Volume of solution = 4 L

Molarity =?

Next, we shall determine the number of mole in 80 g of NaOH. This can be obtained as follow:

Mass of NaOH = 80 g

Molar mass of NaOH = 23 + 16 + 1

= 40 g/mol

Mole of NaOH =?

Mole = mass / molar mass

Mole of NaOH = 80 / 40

Mole of NaOH = 2 moles

Finally, we shall determine the molarity of the solution. This can be obtained as follow:

Mole of NaOH = 2 moles

Volume of solution = 4 L

Molarity =?

Molarity = mole / Volume

Molarity = 2/4

Molarity = 0.5 M

Therefore, the molarity of the solution is 0.5 M.

V1 = 30 mL

P1 = 760 torr

P2 = 1520 torr

V2 = ?

applying Boyle's Law

P1*V1 = P2*V2

760 torr * 30 mL = 1520 torr * V2

V2 = 760 torr * 30 mL / 1520 torr

( C ) is correct

Answer:

81.26% is the percent yield

Explanation:

Based on the reaction:

CaCl₂ + Na₂CO₃ → 2NaCl + CaCO₃

Where 1 mole of CaCl₂ in excess of sodium carbonate produces 1 mole of calcium carbonate.

To solve this question we must find the moles of CaCl2 added = Moles CaCO₃ produced (Theoretical yield). The percent yield is:

Actual yield (0.366g) / Theoretical yield * 100

Moles CaCl₂ = Moles CaCO₃:

0.0500L * (0.0900moles / L) = 0.00450 moles of CaCO₃

Theoretical mass -Molar mass CaCO₃ = 100.09g/mol-:

0.00450 moles of CaCO₃ * (100.09g / mol) = 0.450g of CaCO₃

Percent yield = 0.366g / 0.450g * 100

81.26% is the percent yield

Answer: C

Explanation: Because I just did the test lol.

Chemicals are substances that can be natural or man-made. It can both hurt and help the environment as they pollute water and can also clean water. Thus, option C is correct.

Chemicals are compounds that are synthesized artificially and have various uses and applications in various fields. They can be both beneficial and detrimental to the environment and the ecosystem.

Chemicals like that from factories, pesticides run-off from agricultural fields, drugs, microorganisms, fertilizers, radioactive substances, etc, cause water pollution by acting as contaminants.

On the contrary, chemicals can be used to clean water pollution. Chloramine and chlorine are the most common chemical disinfectants that cleanse contaminated water to make it useful.

Therefore, option C. chemicals can both clean and pollute water.

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Answer:

\(\boxed {\boxed {\sf 56 \ Joules}}\)

Explanation:

We are given the mass, specific heat, and temperature, so we must use this formula for heat energy.

\(q=mc \Delta T\)

The mass is 5 grams, the specific heat capacity is 0.14 Joules per gram degree Celsius. Let's find the change in temperature.

We know the variables and can substitute them into the formula.

\(m= 5 \ g \\c= 0.14 \ J/ g \ \textdegree C \\\Delta T= 80 \ \textdegree C\)

\(q= (5 \ g )( 0.14 \ J/ g \ \textdegree C ) ( 80 \ \textdegree C)\)

Multiply the first numbers. The grams will cancel.

\(q= 0.7 \ J/ \textdegree C(80 \ \textdegree C )\)

Multiply again. This time the degrees Celsius cancel.

\(q= 56 \ J\)

56 Joules of heat are needed.

The correct answer to the given question about reaction is option b) 3.65 g of HCl and 8.40 of NaHCO3 is needed to start to produce 5.85 g of NaCl.

Although sea salt also contains other chemical salts, sodium chloride, generally known as salt, is an ionic substance with the chemical formula NaCl, which denotes a 1:1 ratio of sodium and chloride ions. 100 g of NaCl comprises 39.34 g Na and 60.66 g Cl, with molar weights of 22.99 and 35.45 g/mol, respectively. For both seawater and the extracellular fluid of many multicellular organisms, sodium chloride is the salt that contributes most to the saltiness. Salt, usually referred to as table salt, is frequently used as a seasoning and food preservation in its edible form. Sodium chloride is a primary source of the sodium and chlorine compounds used as feedstocks for further chemical synthesis and is utilized in large quantities in many industrial processes.

Question

according to the given reaction, if you want to produce 5.85 grams nacl of how much grams of hcl and nahco3 must you start with?

a) 5.85 g of HCl and 5.85 g of NaHCO3

b) 3.65 g of HCl and 8.40 of NaHCO3

c) 0.003 g  of HCl and 0.001 of NaHCO3

d) 36.5 g of HCl and 84.0 of NaHCO3

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Answer: Iodine,

, is located in period 5, group 17 of the periodic table, and has an atomic number equal to

53

.

plss brainleist

Explanation: