lphins... Acid. (b) Chlorine reacts with red hot iron powder to give Iron(III) Chloride but not Iron (II) Chloride. Explain. (1Mark)​

The number of electrons is revealed by the atomic number. This indicates that an aluminum atom contains 13 electrons. Eight electrons make up shell 1, eight electrons make up shell 2, and three electrons make up shell 3. The correct option is C.

Each subsequent shell that surrounds the nucleus of an atom's electrons is placed farther away from the nucleus. Atomic orbitals make up one or more of the one or more subshells that make up an electron shell.

The first two electrons in aluminum fall into the 1s orbital, followed by the next two electrons into the 2s orbital. The following six electrons complete the second shell's 2p orbital. The 3s orbital is then filled by electrons 11 and 12. The 3p orbital is now occupied by the final electron.

Thus the correct option is C.

To know more about electron shells, visit;

https://brainly.com/question/30464976

#SPJ6

Answer:

In the final solution, the concentration of sucrose is 0.126 M

Explanation:

The number of moles of solute in the volume taken from the more concentrated solution will be equal to the number of moles of solute in the diluted solution. Then, the concentration of the first solution can be calculated using the following equation:

Ci · Vi = Cf · Vf

Where:

Ci = concentration of the original solution

Vi = volume of the solution taken to prepare the more diluted solution.

Cf = concentration of the more diluted solution.

Vf = volume of the more diluted solution.

For the first dillution:

26.6 ml · 2.50 M = 50.0 ml · Cf

Cf = 26.6 ml · 2.50 M / 50.0 ml

Cf = 1.33 M

For the second dilution:

16.0 ml · 1.33 M = 45.0 ml · Cf

Cf = 16.0 ml · 1.33 M / 45.0 ml

Cf = 0.473 M

For the third dilution:

20.0 ml · 0.473 M = 75.0 ml · Cf

Cf = 20.0 ml · 0.473 M / 75.0 ml

Cf = 0.126 M

In the final solution, the concentration of sucrose is 0.126 M

hope that help

hope you have a great Christmas

mark me brinilylist

The percent by mass of the fluorine in the compound is 46.472%.

We know that the percent by mass has to do with the ratio of the total mass of the atom that is part of the compound and the total molar mass of the compound multiplied by one hundred.

The question in this case has demanded that we ought to obtain the mass percent of fluorine from the compound that we can be able to identify from the formula of the compound that is shown here as xenon hexa fluoride.

Mass of the compound can be obtained from; 131 + 6(19)

= 245 g/mol

The total mass of the fluorine atom in the compound is 114 g

Thus we have the use of;  114 /245 * 100/1

= 46.472%

The percent  by mass is now gotten for the fluorine atom as 46.472%.

Learn more about percent by mass:https://brainly.com/question/5394922

#SPJ1

Answer :

Part 1: 4.93 moles of \(H_2O_2\) contains 9.86 moles of oxygen atoms.

Part 2: 2.01 moles of \(N_2O\) contains 2.01 moles of oxygen atoms.

Explanation :

Part 1: 4.93 mol \(H_2O_2\)

In 1 mole of \(H_2O_2\), there are 2 atoms of hydrogen and 2 atoms of oxygen.

As, 1 mole of \(H_2O_2\) contains 2 moles of oxygen atoms.

So, 4.93 moles of \(H_2O_2\) contains \(4.93\times 2=9.86\) moles of oxygen atoms.

Thus, 4.93 moles of \(H_2O_2\) contains 9.86 moles of oxygen atoms.

Part 2: 2.01 mol \(N_2O\)

In 1 mole of \(N_2O\), there are 2 atoms of nitrogen and 1 atom of oxygen.

As, 1 mole of \(N_2O\) contains 1 mole of oxygen atoms.

So, 2.01 moles of \(N_2O\) contains \(2.01\times 1=2.01\) moles of oxygen atoms.

Thus, 2.01 moles of \(N_2O\) contains 2.01 moles of oxygen atoms.

The reaction rate to the nearest whole number is 36.1 mg/l/sec.

To calculate the reaction rate we would use the formula already provided which is: mass of tablet/volume of water ÷ Reaction time.

For the tablet with a 3°C Reaction time, we would calculate the rate as follows:

1000 mg * 0.2L/138.5 sec = 36.1 mg/L/sec.

The final result has all three variables and the resulting answer is the reaction rate.

Learn more about reaction rate here:

https://brainly.com/question/12904152

#SPJ1

Complete Question:

Assume that each tablet's mass was 1,000 mg, and remember that you used 0,200 L of water each time,

Compute the reaction rate to the nearest whole number using the formula below,

mass of tablet/volume of water

Reaction Rate = mass reaction time

3°C Reaction time = 138.5 sec

Reaction rate = mg/l/sec

Answer:

Vacuoles are essentially enclosed compartments which are filled with water containing inorganic and organic molecules including enzymes in solution, though in certain cases they may contain solids which have been engulfed.

Explanation: i hoped this helped :)

Answer:

vacuole

Explanation:

a space within a cell that is empty of cytoplasm

vacuole is a membrane-bound

The differences in the distribution of solar energy on Earth's surface is due to Earth’s curved shape and tilt on its axis do not allow the sun’s rays to fall evenly on its surface.

The correct option is D.

Solar energy refers to the energy produced by the Sun.

Solar energy is in the form of heat energy, light energy, and ultraviolet radiation.

The shape of the affects the amount of solar energy that reaches any region of the earth. The earth is spherical in shape. Hence, there is an uneven distribution of solar energy from the sun o the Earth. also, the tilt of the earth affects the amount of solar energy that reaches any region of the earth.

Learn more about solar energy at; https://brainly.com/question/27380261

#SPJ1

The best way to measure the pH of a natural solution while out in a forest is to use a portable pH meter or pH test strips specifically designed for field use. These instruments provide accurate and reliable pH measurements and are convenient for outdoor applications.

1. Prepare the necessary equipment: Before heading out to the forest, gather the required tools. You will need a portable pH meter or pH test strips, as well as the necessary reagents or calibration solutions if using a pH meter.

2. Collect the sample: Locate the natural solution you want to measure the pH of, such as a stream, pond, or soil. Use a clean container to collect a representative sample of the solution.

3. Calibrate the pH meter (if applicable): If you are using a portable pH meter, it is essential to calibrate it before taking measurements. Follow the manufacturer's instructions to calibrate the meter using the provided calibration solutions.

4. Conduct the measurement: For pH meters, immerse the electrode into the collected sample. Allow some time for the reading to stabilize, and then record the pH value indicated on the meter's display.

5. Using pH test strips: If you are using pH test strips, dip the strip into the collected sample for the recommended amount of time. Remove the strip and compare the color change with the provided color chart. Determine the corresponding pH value from the chart.

6. Repeat for accuracy: To ensure reliability, repeat the measurement process at least once and compare the results. This step helps confirm the accuracy of your measurements.

7. Record and analyze the data: Note down the pH values obtained and any relevant observations. Analyze the data as needed for your research or monitoring purposes.

By following these steps and using the appropriate equipment, you can effectively measure the pH of a natural solution while in a forest setting.

For more such questions on measurements, click on:

https://brainly.com/question/28391278

#SPJ8

Answer:

Tell students that sometimes when two (or more) substances are mixed together, a change occurs and another substance (or substances) is created. This is called a chemical reaction. Gas may form, heat may be produced, and color may change. These types of changes indicate that a chemical reaction has occurred.

The gas moving the slowest would be Argon (Ar). The speed of a gas molecule is determined by its temperature, which is related to its average kinetic energy.

The gas moving the slowest would be Argon (Ar). The speed of a gas molecule is determined by its temperature, which is related to its average kinetic energy. In general, the heavier a gas molecule is, the slower it will move, as it takes more energy to get it moving. Among the gases listed, Argon has the heaviest molecular weight and therefore would be expected to move the slowest. Helium (He) has the lightest molecular weight and would be expected to move the fastest, followed by Neon (Ne), Krypton (Kr), and Argon (Ar) in order of increasing molecular weight.

Learn more about gases here: brainly.com/question/14812509

#SPJ4

The molarity of the solution with 0.08841 moles of sucrose in 625 mL of aqueous solution is 0.1414 M.

Given the number of moles of sucrose (n) = 0.08841mol

The volume of aqueous sucrose solution (V) = 625mL = 0.625L

Let the molarity of solution = M

Molarity (M) is the number of moles of solute per liter of solution. To find the molarity of a solution, we need to divide the number of moles of solute by the number of liters of solution.

Therefore, the molarity of the solution with 0.08841 moles of sucrose in 625 mL of aqueous solution can be calculated as follows:

Molarity (M) = (moles of solute(n)) / (Volume of solution(V))

M = (0.08841 mol sucrose) / (0.625 L solution)

M = 0.1414M sucrose

To learn more about molarity click here https://brainly.com/question/8732513

#SPJ1

For this exercise we assume ideal gas to use the ideal gas law:

p x V = n x R x T (1)

From this equation, we clear T, where:

p = pressure in atm

V = volume in L

n = moles

T = temperature in K

R = gas constant (we can find this on books, the Internet, and even students can ask the teacher about its value)

R in this case and because of units is equal to 0.082 atm x L / mol x K

Procedure:

Answer: T = 73 K

1) Diesel has a higher viscosity than petrol.

2) Petrol is more flammable than diesel.

3) The formula will be C₁₀H₂₂.

4) The equation is; 2C8H18+25O2→16CO2+18H2O.

Depending on the precise composition and temperature, the viscosity of gasoline and diesel can change. In general, diesel is more viscous than gasoline. Higher viscosity fluids are thicker and flow more slowly than lower viscosity fluids because viscosity relates to the resistance of a fluid to flow.

Diesel is less flammable than gasoline. The lowest temperature at which gasoline can evaporate and turn into an ignitable combination in air is known as its flash point, and it is lower for gasoline. Compared to diesel fuel, petrol vapors are much more flammable and can ignite at lower temperatures.

Learn more about hydrocarbon:https://brainly.com/question/31643106

#SPJ1

Answer:

\(M_{base}=6M\)

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to realize this is a question about titration, which base solved by knowing that the HCl reacts with the NaOH in a 1:1 mole ratio, and therefore, we can write the following:

\(M_{acid}V_{acid}=M_{base}V_{base}\)

Thus, we solve for the molarity of the base, NaOH, as shown below:

\(M_{base}=\frac{M_{acid}V_{acid}}{V_{base}} \\\\M_{base}=\frac{3L*2M}{1.00L}\\\\M_{base}=6M\)

Regards!

Answer:

According to Coulomb’s law, the electric force between two identical negative charges is inversely proportional to the square of the distance between them. This means that as the distance between the two charges decreases, the electric force between them will increase. Since the charges are both negative, they will repel each other, so as they move closer together, the repulsive force between them will become stronger.

Explanation:

Answer:

1s22s22p63s23p63d104s24p1.

Explanation:

Gallium, Ga has 31 protons and 31 electrons.

Answer:

Ar 3d10 4s2 4p1

Explanation:

hope this serves you well!!

The magnetic potential energy between them decreases when the interaction between the magnets as the north poles are brought closer together.

A magnetic dipole moment can have the potential energy in a magnetic field that depends on its magnetic field orientation.

Magnetic potential energy can be described as the energy stored in a system of magnets as a result of the exertion of a magnetic force on each other. When two magnetic poles attract or repel each other then the potential energy can be stored in their relative positions.

The magnetic force will cause similar poles to repel one another, and opposite magnetic poles to attract. Magnets have north and south poles, and the magnetic potential energy depends not only on the position within a magnetic field but also on the orientation of the magnet.

When the poles attract each other their magnetic potential energy and when they repel the magnetic potential energy decreases.

Learn more about magnetic potential energy, here:

https://brainly.com/question/21326707

#SPJ1

Answer: the magnetic potential energy between them increases.

Explanation:

When two like poles are facing each other, they repel. Pushing them toward each other requires energy. This means that their potential energy increases as they are pushed together. Therefore, as the teacher pushes the magnets together, the magnetic potential energy between them increases.

We must take into consideration the balance of atoms and charges in order to balance the half-reaction for the conversion of S2O3 2- to S4O6 2- in acidic solution.

Write the imbalanced half-reaction as the first step.

S2O3 S4O6 2- (aq)

Step 2: Align the atoms, with the exception of hydrogen and oxygen.

2S4O6 2-(aq) = S2O3 2-(aq)

Step 3: Add water (H2O) to balance the oxygen atoms.

2S4O6 2- (aq) + H2O = S2O3 2- (aq)

Step 4: Add hydrogen ions (H+) to balance the hydrogen atoms.

2S4O6 2- (aq) + H2O = S2O3 2- (aq) + 4H+ (aq)

Step 5: Add more electrons (e-) to balance the charge.

2S4O6 2- (aq) + H2O = S2O3 2- (aq) + 4H+ (aq) + 2e-

The balanced half-reaction in acidic solution is:

S2O3 2- (aq) + 4H+ (aq) + 2e- → 2S4O6 2- (aq) + H2O

For more such question on acidic solution.

https://brainly.com/question/12351264

#SPJ11

Answer:

The answer is "Option b".

Explanation:

Given equation and value:

\(\Rightarrow C_2H_2 \ (g)+ \frac{5}{2}O_2 \ (g) \longrightarrow 2CO_2\ (g)+H_2O\ (g)\)

\(\left\begin{array}{ccc}C \equiv C&839\\C-H &413\\O=O &495\\ C=O &799\\ O-H &467 \end{array}\right \\\\\)

calculating equation value:

\(\Rightarrow 839 + 2(413) +\frac{5}{2} (495) \longrightarrow 2(2)799+2 \times 467 +E\)

\(\Rightarrow 839 + 826 +1237.5 = 3196+934 +E\\\\\Rightarrow 2902.5 =4130 +E\\\\\Rightarrow 2902 = 4130 +E\\\\\Rightarrow 2902 - 4130 +E\\\\\Rightarrow E = -1228 \ KJ \\\\\)

The heat(enthalpy) of combustion of acetylene = -1228 kJ

The heat of combustion refers to the amount of heat released when 1 mole of a substance is burned.

The chemical reaction is given in the equation;

The bond energy of the reactant is:

Following the bond energies given in the question, we have:

= ( 1 × 839) +(5/2 × 495) +(2 × 413)

= 2902.5 kJ

The bond energy of the product is:

= (4× 799) +(2 × 467)

= (3196 + 934) kJ

= 4130 kJ

The heat(enthalpy) of combustion of acetylene = bond energy of reactant - bond energy of the product.

The heat(enthalpy) of combustion of acetylene = 2902.5 kJ - 4130 kJ

The heat(enthalpy) of combustion of acetylene = -1227.5 kJ

≅  -1228 kJ

Learn more about heat of combustion here:

https://brainly.com/question/25521766

The mass of the precipitate formed when 50mL of 16.9% (w/v) solution of AgNO 3 is mixed with 50mL of 5.8% (w/v) NaCl solution is 7.19 g.

Let's calculate the number of moles of NaCl:

Number of moles = Mass(g)/Molecular mass

Number of moles of NaCl = 50×5.8/100/58.5

= 50×5.8/100×58.5

= 0.05 mole

The mass of AgCl can be calculated by referring to Equation 1.

By applying POAC on Ag

Number of moles Ag in AgNO3 = Number of moles Ag in AgCl

Number of moles of AgCl = 0.05mole…(ii)

Molecular mass of AgCl = 143.5………..(iii)

Mass of AgCl = Number of moles × Molecular mass of AgCl ………(iv)

Substitute (ii) and (iii) in (iv)

= 0.05 × 143.5

= 7.16g

The mass of an object is a measure of its inertial properties or the amount of matter it contains. The weight of an object is a measure of the force exerted on it by gravity, or the force required to support it. Mass can best be understood as the amount of matter present in an object or body. Everything around us has mass.

Learn more about A mass here:- https://brainly.com/question/19385703

#SPJ4

Answer:

Particles of The Same Composition

Answer:

B. semi-major axis is the answer, I hope that helps

Answer:

synthesis reaction

Explanation:

because the hydrogen and oxygen are coming together.

have a good day friend :)

Answer:

The answer is:

\(speed(\frac{m}{s}) \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ (number)\\\\ 100 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 23 \\\\ 200 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 42 \\\\ 300 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 26 \\\\ 400 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 8 \\\\ 500 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 1 \\\\\)

Explanation:

Its total kinetic energy of a gas colloquial atom colloction is equal to absolute temperature alone, according to the programs that directly gas Theory.

Average speed for 1st option:

\(= \frac{(200 \times 23)+(400 \times 42)+(600 \times 26)+(800 \times 8) +1000}{100} \\\\= 444\ \frac{m}{s} \ \ \ \ \ \ \ \ \ \text{average speed of gas}\)

 Average speed for 2nd option:

 \(= \frac{(200 \times 11) +(400 \times 21)+ (600 \times 13)+ (800 \times 4)}{11+21+13+4} \\\\= 440 \ \frac{m}{s}\)

 Average speed for 3rd option:

\(= \frac{(200 \times 43) +(400 \times 50)+ (600 \times 7)}{100} \\\\ =328 \ \frac{m}{s}\)

 Average speed for 4th option:

 \(= \frac{(200 \times 50) +(400 \times 25)+ (600 \times 13)+(800\times 8)+(1000 \times 4)}{100}\\\\ =382\ \frac{m}{s}\)

  Average speed for 5th option:

\(= \frac{(100 \times 23) +(200 \times 42)+ (300 \times 26)+(400\times 8)+500}{100}\\\\ =222 \ \frac{m}{s}\)

The average speed also increased by half because the temperatures had kinetic energy.\(\to 444 \ \frac{m}{s}\ to \ 222 \ \frac{m}{s}\)

Answer:?

Explanation: i'm confused with this and i know i should be writing this in comments but if you can explain me the question maybe i could help you

Here are some amazing environmental facts that you need to know about. 27,000 trees are cut down each day so we can have Toilet Paper. Aluminum can be recycled continuously, as in forever. ... We can save 75,000 trees if we recycled the paper used on the daily run of the New York Times alone.

it is D. Air pressure!!! :)

Answer:

Explanation:

The density of a substance can be found by using the formula

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

From the question we have

\(density = \frac{20}{8} = \frac{5}{2} = 2.5 \\ \)

We have the final answer as

Hope this helps you

Answer:

pH = 7.30

Explanation:

You can find the pH using the following equation:

pH = -log[H⁺]

In this equation, [H⁺] represents the hydrogen ion concentration. You can plug the given value into the equation and solve to find the pH.

pH = -log[H⁺]

pH = -log[5 x 10⁻⁸]

pH = 7.30