2. Write the charge of each sub-atomic particle in the helium atom above.

Answer:

Aluminum sulfate with barium nitrate to produce burin and aluminum nitrate

Aluminium hydroxide and barium nitrate are produced as a result of the chemical reaction between barium and aluminium nitrate. The reaction's balanced equation is as follows: \(2 Al + 3 Ba (NO_3)_3 \rightarrow 3 Ba(NO_3)_2 + 2 Al(OH)_3\)

Chemical reactions are essential natural processes that take place and are in charge of the innumerable alterations and transformations we experience every day. They include the forming and breaking of chemical bonds between atoms, which causes the atoms to be rearranged to produce new compounds with various properties. The concepts of mass and energy conservation control chemical processes. The idea of balanced chemical equations came about because the total number of atoms of each element involved in a reaction stays constant both before and after the reaction. Aluminium hydroxide and barium nitrate are produced as a result of the chemical reaction between barium and aluminium nitrate. The reaction's balanced equation is as follows: \(2 Al + 3 Ba (NO_3)_3 \rightarrow 3 Ba(NO_3)_2 + 2 Al(OH)_3\)

To know more about chemical reaction, here:

https://brainly.com/question/34137415

#SPJ6

Answer:

AB + CD → AD + BC

Explanation:

This is a double displacement reaction. It is also known as precipitation reaction.

Answer:

Practical stimulation is easy since you don't have to use energy.

Explanation:

Doing the experiment is quite difficult as it takes time and require one to be focused without any interruptions

Answer:

Photon

Explanation:

The simplest description of a photon is to consider it as a bundle of electromagnetic energy.

In the context of wave - particle duality, light is considered sometimes as a particle. Each bundle of the particles of light wave is called a photon of light.

The wavelength of a photon of light emitted by an element can be used as a tool to identify that particular element.

Answer:

The pH of the pure water is not always neutral but actually sometimes it can be slightly acidic but not of the same extent or value as HCl obviously. However ,it is enough to result to a color change in the presence of phenolphthalein.

Explanation:

I will try to be brief and spare the boring details .Basically ,this is caused by the reaction of water and CO2 that is naturally present in the atmosphere to produce a weak acid known as carbonic acid.

~Hope this helps:)

The pH of the solution is 6.11.

The first step is to write out the chemical equations for the ionization of the diprotic acid, H2A. The equations are:

\(H_2A \rightleftharpoons H^+ + HA^- \ \ \ \ (K_{a1})$$HA^- \rightleftharpoons H^+ + A^{2-} \ \ \ \ (K_{a2})$\)

The equilibrium constant for the second ionization, Ka2, is given as 5.37 × 10⁻⁷. We can use the equation for Ka2 to calculate the concentration of H+ in the solution:

\(K_{a2} = \frac{[H^+][A^{2-}]}{[HA^-]}$$[H^+] = \frac{K_{a2}[HA^-]}{[A^{2-}]}$[H^+] = \frac{5.37 \times 10^{-7}(0.0226)}{0.0158}$$[H^+] = 7.7 \times 10^{-7} \ M$\)

Now, we can use the equation for the pH of a solution to calculate the pH of the solution:

pH = -log[H+]

pH = -log(7.7 × 10⁻⁷)

pH = 6.11

Therefore, the pH of the solution is 6.11.

Learn more about chemical equations

https://brainly.com/question/30087623

#SPJ4

Answer:

boron

Explanation:

boron is a metaloid meaning it has the property of a metal and a non metal located where metals and non metals meet on the periodic table

Answer:

The answer is boron, the second answer is chlorine

Explanation:

edge 2022, have a great day h0mies

The pH of the solution containing 2.80 M acetic acid is 2.34.

Given, The Ka value for acetic acid, CH3COOH(aq), is 1.8x10^-5.Molar concentration of acetic acid, CH3COOH(aq), is 2.80 M.

Step 1 The equation for the ionization of acetic acid is as follows.CH3COOH(aq) + H2O(l) ⇆ H3O+(aq) + CH3COO-(aq)

Step 2Expression for Ka isKa = [H3O+][CH3COO-]/[CH3COOH(aq)]1.8 x 10-5 = [H3O+][CH3COO-]/2.80[H3O+] = √(Ka [CH3COOH(aq)]) = √(1.8 x 10-5 x 2.80) = 0.00462 M

Step 3pH = -log[H3O+] = -log(0.00462) = 2.34

So, the pH of the solution containing 2.80 M acetic acid is 2.34.

Acetic acid (CH3COOH) is a weak acid with a Ka value of 1.8x10⁻.

By utilizing this Ka value and the molar concentration of acetic acid, the pH of a 2.80 M acetic acid solution can be calculated.

Using the equation Ka = [H3O+][CH3COO-]/[CH3COOH(aq)], and after simplifying,

it can be determined that [H3O+] = √(Ka [CH3COOH(aq)]).

After substituting the values for Ka and [CH3COOH(aq)], [H3O+] is found to be 0.00462 M.

Finally, pH can be calculated by the expression pH = -log[H3O+], and we obtain the answer of pH=2.34.

To know more about acetic acid visit:

brainly.com/question/15202177

#SPJ11

Answer:

Chemical Change

Explanation:

The nucleus more easily, increasing the probability of causing fission many nuclei like U234, U236, and U238 undergo fission only by fast neutrons.

Fission can be caused by slow as well as fast neutrons. It is the energy of the neutron which determines its effectiveness in causing fission. Fast neutrons are more effective in causing fission. Hence, many nuclei like U234, U236, and U238 undergo fission only by fast neutrons.

Fission is a nuclear reaction process in which the nucleus of an atom is split into two smaller nuclei with the release of a large amount of energy and two or three neutrons. Uranium-235 (U-235) and Plutonium-239 (Pu-239) are the most commonly used fissile materials, but other materials like U-234, U-236, and U-238 can also undergo fission. When a neutron is absorbed by the nucleus of a fissile material like U-235 or Pu-239, it becomes unstable and splits into two smaller nuclei with the release of a large amount of energy.

The fission process also releases two or three neutrons, which can cause further fission of other nuclei, leading to a chain reaction. The chain reaction can be controlled by using a neutron moderator, which slows down the fast neutrons, making them more effective in causing fission. The efficiency of the fission reaction depends on the energy of the neutron.

Fast neutrons are more effective in causing fission than slow neutrons, which have less energy. This is because fast neutrons can penetrate the nucleus more easily, increasing the probability of causing fission. Hence, many nuclei like U234, U236, and U238 undergo fission only by fast neutrons.

Fast neutrons are more effective in causing fission than slow neutrons, which have less energy.

This is because fast neutrons can penetrate the nucleus more easily, increasing the probability of causing fission. Hence, many nuclei like U234, U236, and U238 undergo fission only by fast neutrons.

Learn more about nucleus with the given link,

https://brainly.com/question/13061744

#SPJ11

The volume of 12.0 M HCl required to make 75.0 mL of 3.50 M HCl is 21.9 mL. Option 1 is correct.

To calculate the volume of 12.0 M HCl required to make 75.0 mL of 3.50 M HCl, we can use the formula:

where M1 and V1 are the initial concentration and volume of the HCl solution, and M2 and V2 are the final concentration and volume of the HCl solution.

Rearranging this formula to solve for V1, we get:

Substituting the values given in the problem, we get:

Therefore, the volume of 12.0 M HCl required to make 75.0 mL of 3.50 M HCl is 21.9 mL. Hence Option 1 is correct.

To learn more about volume of solution, here

https://brainly.com/question/14710169

#SPJ4

You are probably asked to convert the given number of methane (CH4) molecules into moles.

1.5 x 10^20 molecules of CH4 is  to 0.0249 moles of CH4

The atomic mass of carbon =  12.01 g/mol,

the atomic mass of hydrogen=  1.008 g/mol.

The molecular weight of CH4 is shown below:

Molecular weight CH4 = (1 x 12.01 g/mol) + (4 x 1.008 g/mol)

Molecular weight CH4   = 16.04 g/mol

Number of moles = number of molecules / Avogadro's number

Number of moles = (1.5 x 10^20) / (6.022 x 10^23 molecules/mol)

Number of moles = 0.0249 moles

Learn more about atomic mass at: https://brainly.com/question/30390726

#SPJ1

Absolute zero is an idea in thermodynamics that describes the lowest energy system.

Thermodynamics

Thermodynamics is the study of thermal energy and heat. One of the most important ideas in thermodynamics is entropy. Entropy is defined as the chaos within a system. Chaos is the movement or different orientations of molecules in a system. Entropy is related to temperature; the higher the temperature, the higher the entropy. High entropy means there is a large amount of chaos in a system, while low entropy is low chaos.

Absolute zero

Absolute zero occurs when the temperature of a system is 0 kelvin or -273.15 °C. Zero kelvin is the theoretical temperature in which entropy equals 0. This means that there is no movement or energy within a system. Absolute zero is the lowest energy a system can possibly have.

Fractional distillation is the process of distilling crude oil into distinct parts or fractions during the refinement process.

Refining is the process of dividing, removing impurities, and converting raw materials into products that may be used and adhere to strict quality standards.

A physical separation method known as fractional distillation makes use of the various components or fractions of crude oil's different boiling temperatures. The procedure involves vaporizing the crude oil in a fractionating column after it has been heated to a high temperature. Depending on the boiling points of the various components, the vapor cools and condenses at different heights as it ascends the column. The condensed liquids are gathered in various trays, each of which holds a percentage with a particular boiling point range and chemical make-up.

To know more about refining, visit:

https://brainly.com/question/29510917

#SPJ4

the electron configuration for calcium can be written as:

1s2 2s2 2p6 3s2 3p6 4s2

The atomic number of calcium is 20, indicating that it has 20 electrons. The ground-state electron configuration for calcium can be written using the following rules: 1s2 2s2 2p6 3s2 3p6 4s2

The first number before each sub-shell indicates the principal quantum number (n), while the letter indicates the type of sub-shell (s, p, d, or f) and the superscript indicates the number of electrons in that sub-shell. Therefore, the electron configuration for calcium can be written as:

1s2 2s2 2p6 3s2 3p6 4s2. Electronic configuration refers to the distribution of electrons in the orbitals of an atom or ion. It describes the arrangement of electrons in the electron shells or energy levels and subshells or orbitals of an atom or ion.

Learn more about  electron configuration here:

https://brainly.com/question/1688387

#SPJ4

Answer:

Option A is the correct option.

Explanation:

\( \frac{p1 \: v1}{t1} = \frac{p2 \: v2}{t2} \)

\(p2 = \frac{p1 \: v1 \: t2}{t1 \: v2} \)

\(p2 = \frac{2.45 \times 8 \times 550}{273 \times 11.8} \)

\(p2 = 3.35 \: atm\)

Partial pressure of N² :

\(3.35 \times \frac{78.08}{100} \)

\( = 2.61 \: atm\)

Hope this helps..

Best regards!!

Answer:  2.61 atm

Option A is the correct option.

....

...

..

.

A conjugate acid-base pair is the pair of two compounds which differ by the presence of a proton. An acid will donate protons to a base and become a conjugate base. A base will accept protons and become a conjugate acid.Conjugate acid/base pairs are as follows:H2PO4− and HPO42−H2CO3 and CO32−HCl and Cl−H3O+ and OH−Explanation:

H2PO4− and HPO42−H2PO4− can donate a proton to become HPO42− and the latter can accept a proton to become H2PO4−.H2CO3 and CO32−H2CO3 can donate a proton to become CO32− and the latter can accept a proton to become H2CO3.HCl and Cl−HCl can donate a proton to become Cl− and the latter can accept a proton to become HCl.H3O+ and OH−H3O+ can donate a proton to become OH− and the latter can accept a proton to become H3O+.Therefore, the following are conjugate acid/base pairs:H2PO4− and HPO42−H2CO3 and CO32−HCl and Cl−H3O+ and OH−

to know more about conjugate intake pls visit:

https://brainly.com/question/32676227

#SPJ11

\(KP = (PNH3)^2/(PN2)(PH2)^3\)To get this expression, we first need to write the balanced chemical equation for the reaction:

\(N2(g) + 3H2(g) ⇌ 2NH3(g)\)
The KP expression is then obtained by taking the product of the concentrations of the products raised to their stoichiometric coefficients, divided by the product of the concentrations of the reactants raised to their stoichiometric coefficients. We use partial pressures here since the reaction involves gases:
\(KP = (PNH3)^2/(PN2)(PH2)^3\)
Note that we have to raise \(PH2\) to the power of 3 since there are 3 moles of \(H2\) in the balanced chemical equation.

Learn more about chemical equation here:

https://brainly.com/question/30087623

#SPJ11

Answer:

IT IS CORONAAAAAAAAAAAAAAAAAAAAA

Answer:

coronavirus is a lung disease, it makes it so that you have a fever, cough, trouble breathing, mild headaches, and sometimes even nausea. you should be cautious because if your at high risk your gonna have trouble recovering from it. wearing a mask could help protect others from the spread of coronavirus. others wearing a mask prevents you from the spread of coronavirus. if you do catch it, make sure you see your doctor and isolate yourself for two weeks to a month and try not to go out as much.

Answer:

Fraction of water that can be vaporized = 0.0961 or 9.61%

Note : The question is incomplete. The complete question is given below:

A serving of Cheez-Its releases 130 kcal (1 kcal = 4.18 kJ) when digested by your body.

If this same quantity of energy were transferred to 2.5 kg of water at its boiling point, what  fraction of the water would be vaporized?

Explanation:

Energy released by a serving of Cheeze-Its = 130 kcal

Since 1 kcal = 4.18 kJ, 130 kcal = 130 * 4.18 kJ = 543.4 kJ

Heat of vaporization (evaporating or condensing) Hv, of water = 2260 J/g

From formula, quantity of heat, Q = mass  * heat of vaporization

mass of water = 2.5 kg = 2500 g

Q = 2500 g * 2260 J/g

Q  = 5650000 J = 5650 kJ

Therefore 2.5 kg of water requires 5650 kJ of heat for complete vaporization

Fraction of water that can be vaporized by 543.4 kJ energy = 543.4/5650

Fraction of water that can be vaporized = 0.0961 or 9.61%

Answer:

15 neutrons

Explanation:

the atomic mass shows the amount of neutrons and protons added together

the atomic number shows us how many protons they are (you can also find out how many electrons a element has by looking at its atomic number as it will have the same amount of protons)

so to find the amount of neutrons the sample has you have you subtract the atomic number which is the amount of protons from the mass number which tells us the amount of neutrons and protons added together but we only need the neutrons that's why we subtract it

33-18=15

This is a synthesis reaction we're given that aluminium (Al) can react with oxygen gas (O2 to produce aluminium oxide (Al2O3).The balanced chemical equation for this reaction is 4Al(s)+3O2(g)→2Al2O3(s)

When two separate atoms or molecules interact to create a new compound or molecule, the process is known as a "synthesis reaction." The majority of the time, energy is released and an exothermic reaction takes place during a synthesis reaction. An endothermic result is also conceivable, though. When sodium (Na) and chlorine (Cl) are combined, sodium chloride is created. This is an illustration of a synthesis reaction (NaCl). Al2O3 is the chemical formula for the compound of aluminium and oxygen known as aluminium oxide. It is precisely referred to as aluminum(III) oxide and is the most prevalent of various aluminum oxides. Aluminum oxide is utilized for its strength and hardness.

Learn more about synthesis reaction here:

https://brainly.com/question/16987748

#SPJ4

Answer:

Newton believed that gravity was a force.

The law of universal gravitation offers a mathematical explanation for the attraction between the moon and Earth.

Newton was the first to have the idea that gravity is everywhere.

Answer:every object attract every other object

Explanation:

Answer:

Chemistry is the study of atoms, reactions, and discovering why. Chemistry is useful in the world, because you can understand more easily how things work, and what happens when compounds mix together.

The two effects do impurities have on the melting point of an organic compound are given as ,

The impurities decreases the melting point of the substance of organic compounds . This is because there are unwanted  particles which weaken the lattice structure of the  solids crystal due to which it become less stable and melts before its original melting point.

Example : Let take a clay and add dirt hen it breaks easily from the points where there is dirt . This is essentially what happens with impurities

Learn more about melting point

https://brainly.com/question/25777663

#SPJ4

Yes, a starch-like molecule is made up of many glucose (sugar) molecules bonded together.

Starch is a carbohydrate that is commonly found in many plants and is a major source of energy for humans and animals. It is made up of many glucose molecules that are bonded together through glycosidic bonds to form a long chain.

Starch is a polysaccharide, which means that it is made up of multiple sugar molecules. The two main types of starch are amylose, which is a linear chain of glucose molecules, and amylopectin, which is a branched chain of glucose molecules.

When we eat starchy foods, enzymes in our digestive system break down the starch into individual glucose molecules, which are then absorbed into the bloodstream and used for energy by the body.

Therefore, starch is a complex carbohydrate smade up of many glucose molecules bonded together, which serves as an important source of energy in our diet.

learn more about sugar:

https://brainly.in/question/45494318

#SPJ11

Answer:

1. Cerium

2. Iodine

3. Potassium

4. Lead

5. Boron

6. Calcium

7. Krypton

8. Einsteinium

Explanation:

Hope it helped!

99.93kJ

Given the chemical reaction expressed as:

From the reaction, 1 mole of nitrogen absorbs 200kJ of heat.

Determine the mole of nitrogen

The amount of energy 0.4496moles of N2 will absorb is given as:

Hence the amount of heat that will be absorbed when 14 grams of Nitrogen reacts with excess O2 is 99.93kJ