Given: S03(g) + H20(1) -> H2SO4(1); AH° = -130. kJ

determine AH° for the following thermochemical equation.

5H2S04(1) -> 5S03(8) + 5H20(1)

Step 1 - Converting ml and quart

As can be seen in the figure, the conversion factor is:

Dividing both sides by 1.057:

Step 2 - Converting 2.55 quart to ml

Now that we know the conversion factor, we just have to multiply both sides by 2.55:

There are thus 2412.47 ml in a 2.55 quart bottle pepsi.

60 Grams are produced due to the fact that it may not produce more due to the certain capacity that varies on the size of the cube.

Approximately 4.37 x 10^23 molecules of HCl would be required to form 34.52 g of MgCl₂.

To determine the number of molecules of HCl required to form 34.52 g of MgCl₂, we need to use the molar mass and stoichiometry of the balanced equation:

Mg(OH)₂(s) + 2 HCl(aq) → 2 H₂O(l) + MgCl₂(aq)

The molar mass of MgCl₂ is 95.21 g/mol.

First, we need to calculate the number of moles of MgCl₂ formed:

Moles of MgCl₂ = mass of MgCl₂ / molar mass of MgCl₂

Moles of MgCl₂ = 34.52 g / 95.21 g/mol

Moles of MgCl₂ = 0.363 mol

According to the balanced equation, the stoichiometric ratio between HCl and MgCl₂ is 2:1. Therefore, the moles of HCl required can be calculated as follows:

Moles of HCl = 2 * Moles of MgCl₂

Moles of HCl = 2 * 0.363 mol

Moles of HCl = 0.726 mol

To calculate the number of molecules, we need to use Avogadro's number, which is approximately 6.022 x 10^23 molecules/mol.

Number of molecules of HCl = Moles of HCl * Avogadro's number

Number of molecules of HCl = 0.726 mol * 6.022 x 10^23 molecules/mol

Number of molecules of HCl = 4.37 x 10^23 molecules

Therefore, approximately 4.37 x 10^23 molecules of HCl would be required to form 34.52 g of MgCl₂.

For more such questions on molecules

https://brainly.com/question/1351818

#SPJ8

Answer:

0.0023 cm

Explanation:

The following data were obtained from the question:

Length (L) = 55 cm

Breadth (B) = 23.3 cm

Volume (V) = 2.9 cm³

Thickness (T) =?

Thus, we can obtain the thickness of the aluminum foil as illustrated below:

V = L × B × T

2.9 = 55 × 23.3 × T

2.9 = 1281.5 × T

Divide both side by 1281.5

T = 2.9/1281.5

T = 0.0023 cm

Therefore, the thickness of the aluminum foil is 0.0023 cm

Answer: False

Explanation: The nucleus of an atom only contains the protons and neutrons.

The electrons are not found in the nucleus,

they are orbiting the nucleus in different shells.

1. The volume of the stock solution needed is 0.008 L

2. The concentration of the diluted solution is 0.52 M

1. How to determine the volume of the stock solution

We can obtain the volume of the stock solution as follow:

M₁V₁ = M₂V₂

7 × V₁ = 0.480 × 0.120

5 × V₁ = 0.0576

Divide both side by 7

V₁ = 0.0576 / 7

V₁ = 0.008 L

Thus, the volume needed is 0.008 L

2. How to determine the concentration of the diluted solution

We can obtain the concentration of the diluted solution as follow:

C₁V₁ = C₂V₂

7 × 20 = M₂ × 270

140 = M₂ × 270

Divide both side by 270

C₂ = 140 / 270

C₂ = 0.52 M

Thus, the concentration is 0.52 M

Learn more about dilution:

https://brainly.com/question/15022582

#SPJ1

The waves that  has the greatest wavelength is Wavelength shown with 1 wavelength stretched over a long distance.

A wave could be a disturbance or variety that voyages through a medium or space, carrying vitality without transporting matter. Waves can take different shapes and happen totally different sorts of waves, counting mechanical waves and electromagnetic waves.

Mechanical waves require a medium to propagate, meaning they require a substance like water, discuss, or a strong fabric to transmit the wave. Illustrations of mechanical waves incorporate water waves, sound waves, and seismic waves. In these waves, particles of the medium sway or vibrate in a design, exchanging energy from one molecule to another.

Electromagnetic waves, on the other hand, don't require a medium and can travel through vacuum, such as in space. Electromagnetic waves comprise of electric and attractive areas swaying opposite to each other and to the heading of wave engendering. Illustrations of electromagnetic waves incorporate obvious light, radio waves, microwaves, infrared waves, bright waves, X-rays, and gamma beams.

Learn more about waves  below.

https://brainly.com/question/26116832

#SPJ1

The mass of the rectangular piece of copper is 18,869 g (approx).In conclusion, the mass of a rectangular piece of copper with dimensions 24.4cm x 11.4 cm x 7.9 cm and a density of 8.92 g/cm³ is 18,869 g (approx.).

The given dimensions of the rectangular piece of copper are:Length = 24.4 cmWidth = 11.4 cmHeight = 7.9 cmThe formula to calculate the mass of an object is given by;

Mass = Density x Volume

Here, the density of copper is given as 8.92 g/cm³.

Therefore, the first step is to calculate the volume of the rectangular piece of copper.The formula to calculate the volume of a rectangular object is given by:

Volume = Length x Width x Height

So,Volume = 24.4 cm x 11.4 cm x 7.9 cm= 2115.432 cm³Now we will use the mass formula:

Mass = Density x Volume= 8.92 g/cm³ x 2115.432 cm³= 18,869.27824 g= 18,869 g (approx.)

For more such questions on copper

https://brainly.com/question/29176517

#SPJ8

Alkene and cycloalkane are the two potential functional group isomers of C6H12. There are six alternative places for the double bond in the alkene, resulting in six different structures.

Three and four hexenes are geometric isomers. While the trans isomer of 3-hexene has the methyl groups on opposing sides of the double bond, the cis isomer of the compound has both methyl groups on the same side.

The carbon-carbon double bonds in the structures 1-hexene, 2-hexene, 3-hexene, and 4-hexene prevent rotation around the bonds, allowing them to exist as geometric isomers.

To know more about cycloalkane visit:-

brainly.com/question/30737838

#SPJ1

The balanced equation for the reaction between solid calcium cyanide and liquid water to generate calcium hydroxide and hydrogen cyanide would be \(Ca(CN)_2 (s) + 2H_2O(l)-- > Ca(OH)_2 (aq) + 2HCN (aq)\)

The reaction between solid calcium cyanide and liquid water to generate calcium hydroxide and hydrogen cyanide would be written as follows:

The chemical formula of solid calcium cyanide = \(Ca (CN)_2 (s)\)

The chemical formula of liquid water = \(H_2O (l)\)

The chemical formula of calcium hydroxide in solution = \(Ca(OH)_2 (aq)\)

The chemical formula of hydrogen cyanide in solution = \(HCN (aq)\)

Bringing all the species together, the equation for the reaction would be:

But the above equation is not balanced. The number of hydrogen and cyanide atoms is not balanced. Balanced chemical equations always have an equal number of every atom in the reactants and in the products.

Thus, the balanced equation of the reaction would be;

\(Ca(CN)_2 (s) + 2H_2O(l)-- > Ca(OH)_2 (aq) + 2HCN (aq)\)

More on balancing chemical equations can be found here: https://brainly.com/question/28294176

#SPJ1

Answer:No

Explanation: Because without plants, animals would have no oxygen to breathe and would die. People also depend on plants for food. All animals eat either plants or plant-eating animals. Without plants there would be no food at all.

The partial pressure of \(N_2\)is 165.6 kPa and the partial pressure of \(H_2\)is 434.4 kPa.

To calculate the partial pressures of \(H_2\)and \(N_2\)in the 10dmcube container, we need to use the ideal gas law equation, which states that the pressure of a gas is directly proportional to its number of moles and temperature, and inversely proportional to its volume.

First, we need to calculate the number of moles for each gas. Since we are given the volume of each gas and the volume of the container, we can use the formula:

Number of moles = Volume / Molar volume

The molar volume is the volume occupied by one mole of a gas at a given temperature and pressure. At standard temperature and pressure (STP), the molar volume is 22.4 L/mol.

For \(N_2\), the number of moles is 2 dmcube / 22.4 L/mol = 0.089 mol
For \(H_2\), the number of moles is 5 dmcube / 22.4 L/mol = 0.223 mol

Next, we can calculate the partial pressures of each gas using the formula:

Partial pressure = (Number of moles / Total number of moles) * Total pressure

The total pressure is the sum of the pressures of each gas:

Total pressure = Pressure of N2 + Pressure of \(H_2\)

Given that the pressure of N2 is 100 kPa and the pressure of \(H_2\)is 500 kPa, we have:

Total pressure = 100 kPa + 500 kPa = 600 kPa

Now we can calculate the partial pressure of \(N_2\):

Partial pressure of \(N_2\)= (0.089 mol / (0.089 mol + 0.223 mol)) * 600 kPa = 165.6 kPa

Similarly, we can calculate the partial pressure of \(H_2\):

Partial pressure of H2 = (0.223 mol / (0.089 mol + 0.223 mol)) * 600 kPa = 434.4 kPa

Therefore, the partial pressure of \(N_2\)is 165.6 kPa and the partial pressure of \(H_2\)is 434.4 kPa.

For more such question on partial pressure visit:

https://brainly.com/question/19813237

#SPJ8

Answer:

Option C: CH3 - CH2 - CH2 – Cl + alc. KOH

Explanation:

When we heat an Alkyl halide (R - X) in a solution of potassium hydroxide dissolved in alcohol (alcoholic potash), it eliminates one molecule of halogen acid to form alkenes. This reaction process is called dehydrohalogenation and it is an example of a beta elimination reaction.

Now in the question for us to prepare propene, we will do that by boiling 1-chloropropane in alcoholic potassium hydroxide(KOH) and from earlier statement ,dehydrohalogenation will take place to form propene.

The reaction is;

CH3 - CH2 - CH2 – Cl + alc. KOH ⟶ CH3-CH=CH2 + KCl + H20

Thus, the correct answer is;

CH3-CH2-CH2–Cl + alc. KOH

The mass of the ammonia that is required is  258 g.

The quantitative correlations between the reactants and products in a chemical reaction are the focus of the chemistry subfield known as stoichiometry.

We have to know that;

1 mole of CO2 produces 1 mole of urea

2.2 moles of CO2 produces 2.2 urea

Given that the number of moles of urea = 455 g/60 g/mol

= 7.58 moles

Now;

2 moles of NH3 produces 1 mole of urea

x moles of NH3 produces 7.58 moles of urea

x = 7.58 * 2/1

= 15.16 moles

Mass of the ammonia =  15.16 moles * 17 g/mol

= 258 g

Learn more about stoichiometry:https://brainly.com/question/29019892

#SPJ1

Answer: Two substances have different properties because they are made of different types and numbers of atoms that repeat.

Explanation: According to the article “Atomic Zoom-In”, all matter is made of tiny pieces called atoms, and there are 118 different types of atoms in the universe. Every substance is made of a unique combination of atoms, which can be represented by a chemical formula. The chemical formula shows the types and numbers of atoms that repeat to make up a substance.

For example, water has a chemical formula of H2O, which means it is made of groups of 2 hydrogen atoms and 1 oxygen atom. Substances have different properties because they are made of different types and numbers of atoms that repeat.

For example, water and ethanol are both clear liquids, but they have different properties such as boiling point, density, and flammability. This is because water is made of H2O groups, while ethanol is made of C2H6O groups.

The different types and numbers of atoms affect how the molecules interact with each other and with other substances, resulting in different properties. Therefore, to explain why two substances have different properties, we need to look at their chemical formulas and see how their atoms differ.

Hope this helps, and have a great day! =)

Answer:

i think its c

Explanation:

Answer:

1. Valence electrons are outer shell electrons with an atom and can participate in the formation of chemical bonds. In single covalent bonds, typically both atoms in the bond contribute one valence electron in order to form a shared pair. The ground state of an atom is the lowest energy state of the atom.

2. The answer is in the picture.

3. If the outer shell of the electron is not closed, it is known as a valence electron. In the case of a single covalent bond, both electrons contribute one valence electron to form a shared pair; in the case of an ionic bond, both electrons contribute one valence electron and the bond is known as a single ionic bond.

hope it helps you...

Valence electrons are the electrons located at the outermost shell of an atom and influence the rate of chemical reactions.

Valence electrons are the electrons in the outermost shell, or energy level, of an atom.

For example, oxygen has six valence electrons, two in the 2s subshell and four in the 2p subshell.

Also another example for the role of valance electron in chemical reactions is presented in the table attached.

Thus, the evidence from this data table demonstrates that the number of valence electrons strongly influences the chemical behavior of elements.

Elements with a small number of valence electrons tend to lose them to achieve a stable configuration, while elements with a larger number of valence electrons tend to gain electrons.

Learn more about valence electron here: https://brainly.com/question/28896521

#SPJ1

Answer:

0.024 g/mL

Explanation:

The denisty of a substance is a ratio comparing its mass per every 1 unit of volume. Therefore, if you have been given a mass in grams and a volume in milliliters, the unit for denisty (in this case) is g/mL.

Density = ? grams / ? mL

Density = 12 g / 500 mL

Density = 0.024 g/ 1 mL = 0.024 g/mL

Answer:

1g/mL is the correct answer

Answer:

The nuclide formed by the β decay of 26Al is 26Mg.


Mark my answer as brainliest! this was a difficult one

Answer:

Hence the correct option is an option (b) Sr4, Cl,Br−,Na+.

Explanation:    

Bromine and chlorine belong to an equivalent group. As we go down the group the dimensions increases which too there's a charge on the bromine atom. therefore the size of the Br- is going to be larger in comparison to the chlorine atom.

Sr atom is within the second group, and also it's below the above-mentioned atoms.so Sr is going to be the larger one among all the atoms.

Sodium and chlorine belong to an equivalent period .size decrease from left to right. but due to the charge on sodium its size decreases and there's an opportunity that Na+ size could be adequate for Cl.      

Here we finally assume that two atoms are of an equivalent size (Na+ and Cl) which are less in size compared to the opposite two(Sr and Br-) during which one is greater (Sr)and the opposite is smaller(Br-).

Answer:

read a lot and understand what you read

do practicals

Answer:

The mass of sodium sulfate formed by the comolete reaction of 120.0 grams of sodium hydroxide is 142.04 grams.

Explanation:

The balanced chemical equation for the reaction between sodium hydroxide and sulfuric acid is:

2NaOH + H2SO4 -> Na2SO4 + 2H2O

From the equation, we can see that 2 moles of sodium hydroxide react with 1 mole of sulfuric acid to form 1 mole of sodium sulfate. We can use this information, along with the molar masses of the compounds, to calculate the mass of sodium sulfate formed.

First, we need to convert the given mqss of sodium hydroxide to moles. The molar mass of sodium hydroxide is 40.00 g/mol, so:

Moles of NaOH = Mass of NaOH / Molar mass of NaOH

Moles of NaOH = 120.0 g / 40.00 g/mol

Moles of NaOH = 3.00 mol

Next, we can use the mole ratio from the balanced equation to calculate the moles of sodium sulfate formed:

Moles of Na2SO4 = Moles of NaOH / 2

Moles of Na2SO4 = 3.00 mol / 2

Moles of Na2SO4 = 1.50 mol

Finally, we can convert the moles of sodium sulfate to grams using its molqr mass of 142.04 g/mol:

Mass of Na2SO4 = Moles of Na2SO4 x Molar mass of Na2SO4

Mass of Na2SO4 = 1.50 mol x 142.04 g/mol

Mass of Na2SO4 = 213.06 g

Therefore, the mass of sodium sulfate formed by the complete reaction of 120.0 grams of sodium hydroxide is 213.06 grams.

Answer:

heat energy

Explanation:

Conduction is the transfer of heat energy from one substance to another or within a substance.

This representation suggests that the element is phosphorus (P) with a mass number of 30, which is incorrect. The correct mass number for phosphorus is approximately 30.97. The incorrect representation for a neutral atom is 36Li

To determine the correct representation for a neutral atom, we need to consider the atomic number (Z) and mass number (A) of the element. The atomic number represents the number of protons in the nucleus, while the mass number represents the sum of protons and neutrons.

Let's analyze the given representations:

36Li:

This representation suggests that the element is lithium (Li) with a mass number of 36, which is incorrect. The correct mass number for lithium is approximately 6.94.

613C:

This representation suggests that the element is carbon (C) with a mass number of 13, which is correct. Carbon has different isotopes, and 13C represents one of its stable isotopes.

3063Cu:

This representation suggests that the element is copper (Cu) with a mass number of 63, which is correct. Copper has different isotopes, and 63Cu represents one of its stable isotopes.

1530P:

This representation suggests that the element is phosphorus (P) with a mass number of 30, which is incorrect. The correct mass number for phosphorus is approximately 30.97.

Therefore, the incorrect representation for a neutral atom is 36Li, as it does not match the known properties of lithium.

For more question on atom

https://brainly.com/question/26952570

#SPJ8

The balanced chemical equation for the dissociation of Ba(OH)₂:

Ba(OH)₂(s) → Ba₂+(aq) + 2OH-(aq). Also, Molar concentration is 1.68 M.

a. The balanced chemical equation for the dissociation of Ba(OH)₂:

        Ba(OH)₂(s) → Ba₂+(aq) + 2OH-(aq)

b. To calculate the molar concentration of the hydroxide ion (OH-):

The number of moles of OH- ions present in the solution is twice the number of moles of barium hydroxide since the balanced equation shows that each mole of Ba(OH)2 produces 2 moles of OH- ions.

Moles of OH- = 2 × 0.550 mol = 1.10 mol

The molar concentration of OH- is given by the formula:

Molarity (M) = Moles of solute / Volume of solution (in liters)

Molarity of OH- = 1.100 mol / 0.655 L = 1.680 M

c. Since the balanced equation for the dissociation of Ba(OH)₂ shows that for every mole of Ba(OH)₂, 2 moles of OH- ions are produced, the H+ concentration can be determined using the concept of Kw, the ion product of water.

Kw = [H+][OH-]

[H+] = Kw / [OH-]

[H+] = (1.0 × 10⁻¹⁴) / (1.680 M)

Calculating the H+ concentration using the above formula will give the H+ concentration in the solution.

d. To calculate the pH, pOH, and determine if the solution is acidic, basic, or neutral:

pOH = -log[OH-]

pH = 14 - pOH

Once you calculate the pOH, you can subtract it from 14 to find the pH. If the pH is less than 7, the solution is acidic. If the pH is greater than 7, the solution is basic. If the pH is exactly 7, the solution is neutral.

Learn more about pH here:

https://brainly.com/question/22390063

#SPJ1