Barium + Aluminum nitrate —> makes what ?

Some assumptions from the kinetic molecular theory , one is most frequently cited to explain diffusion of a gas is the gas consist of  tiny particles moving in the random straight line motion.

The assumption of the kinetic molecular theory are :

Thus, the gas is the gas consist of  tiny particles moving in the random straight line motion explain the diffusion of a gas.

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The molar concentration of acetic acid in the vinegar is 0.611M

Molar concentration is the most convenient method of expressing the concentration of a solute in the given solution. Molarity is the number of moles of the solute dissolved per liter of the solution.

Thus M = mol per L.

All mole calculations will determine the amount in moles of the solution, for which it is the molar concentration.

Given,

Concentration of NaOH = 0.1906M

Volume of NaOH = 32.1 ml

Volume of acetic acid = 10 ml

During neutralization, the number of moles of acid is the same as the number of moles of base.

concentration of NaOH × Volume = Concentration of acetic acid × volume

0.1906 × 32.1 = Concentration of acetic acid × 10

Concentration of acetic acid = 0.611 M

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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

\(volume = \frac{78}{7.8} \\ \)

We have the final answer as

Hope this helps you

Answer:

As you move down the periodic table, atomic radii increase (more shells in the electron configuration), and the first ionization energy decreases. Electrons of the outermost shell of the atom are further away, and their attraction to the nucleus, therefore, decreases, making it easier for elements with high electronegativity such as Fluorine to form compounds with them.

Answer

V = 123.3 L

Explanation

Given:

mass of H2 = 11.1 g

At STP

Required: Volume of H2

Solution

At STP 1 mole =22.4 L

Step 1: Calculate the number of moles of H2

n = m/M

n = 11.1g/2.016g/mol

n = 5.5 mol

Step 2: Calculate the volume

1 mole =22.4 L

5.5 mole = x liters

V = 123.3 L

\(C_3H_6\)  has a double bond in its carbon skeleton. This is a true statement.

Carbon skeleton refers to the chain of carbon atoms that make up an organic molecule. The presence or absence of double bonds in the carbon skeleton affects the properties of the molecule and how it interacts with other molecules. In \(C_3H_6\), there are three carbon atoms arranged in a linear chain, with each carbon atom forming single covalent bonds with two hydrogen atoms. The remaining valence electrons on each carbon atom form a double bond between the first and second carbon atoms.

This double bond is responsible for the unsaturated nature of the molecule. \(C_3H_6\)is an example of a simple alkene, also known as propene. Its carbon skeleton and double bond make it a versatile molecule that can be used in various applications, including the production of plastics, rubber, and other materials.

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Answer:

It's a liquid

Explanation:

The (l) is one of the four state symbols. You also have (s) for solid, (g) for gas and (aq) for aqueous - something in a solution. Hope this helps!!

Answer:

liquid

Explanation:

the scientific symbol of liquid is represented by l

Answer:

I don't think endothermic reactions have anything to do with temperature. Instead they focus on the direction of the transfer of energy whether it is inside a body or to the surroundings.

Answer:

I'm sorry, but I cannot see the observations or the data table you mentioned in your question. However, I can still provide you with some general guidance on how to approach the calculations and answer the questions based on the given information.

4. To calculate the concentration of the NaOH solution, you need to know the mass of NaOH used and the volume of the solution. The formula to calculate concentration is:

Concentration (in mol/L) = (Mass of NaOH (in grams) / molar mass of NaOH) / Volume of solution (in L)

Make sure to convert the mass of NaOH to moles by dividing it by the molar mass of NaOH. The molar mass of NaOH is the sum of the atomic masses of sodium (Na), oxygen (O), and hydrogen (H).

5. The balanced equation for the neutralization reaction between NaOH and HCl is:

NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)

(aq) represents an aqueous solution, and (l) represents a liquid.

6a. To calculate the average concentration of HCl in the sample from site B, you need to know the volumes and concentrations of the NaOH and HCl solutions used in the titration. Use the formula:

Concentration of HCl (in mol/L) = (Volume of NaOH solution (in L) * Concentration of NaOH (in mol/L)) / Volume of HCl solution (in L)

Multiply the volume of NaOH solution used by its concentration to find the amount of NaOH used. Then, divide this amount by the volume of HCl solution used to find the concentration of HCl.

6b. To determine the pH of the water at site B, you need to know the concentration of HCl from the previous calculation. The pH can be calculated using the formula:

pH = -log10[H+]

Since HCl is a strong acid, it dissociates completely into H+ ions. Therefore, the concentration of H+ ions is equal to the concentration of HCl. Take the negative logarithm (base 10) of the H+ concentration to find the pH.

To check if the water is safe, compare the calculated pH value to the range provided (pH 4.5-7.5). If the pH falls within this range, the water is considered safe for plant and animal reproduction in an aquatic environment.

6c. Use a similar calculation as in 6a to determine the average concentration of HCl in the sample from site C.

6d. Use the concentration of HCl from 6c to calculate the pH using the formula in 6b. Follow the same procedure to check if the water is safe based on the pH range.

7. To find the most current pH value for the Grand River, you can search for the latest data from reliable sources such as environmental agencies, research institutions, or government websites. Compare this pH value to the pH values obtained in the experiment to assess the difference between them.

Remember, without the specific data and observations, the calculations and comparisons provided here are only general guidelines. It's important to use the actual data from your experiment to obtain accurate results and conclusions.

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Answer:

When nitric acid reacts with ammonia, ammonium nitrate is formed.

Answer:

The amount of water

The amount of sugar and

The amount of yeast

Explanation:

A constant variable is that variable in an experiment which must be kept the same for all groups in order not to alter the results of the experiment.

In this question, the independent variable i.e. the variable being manipulated is the TYPE OF SUGAR USED while the dependent variable i.e. variable that responds to change is AMOUNT OF ENERGY. Three different types of sugar were used viz: maltose, glucose, and sucrose. To not alter the outcome of the experiment, the constants of this experiment i.e. variables that must be the same for all groups of the experiment, include the following:

- The amount of water

- The amount of sugar

- The amount of yeast used

Answer: i dont think anyone know because its ghard

Explanation:

Answer:

Complete the table to show the relative charge of each particle and the number of each particle found in a

140 Ce2+ ion.

Particle

Relative charge of each particle Number of each particle present

in a 140 Ce2ion

proton

neutron

electron

1.0.1 58. 82. 60

O -1.0, +1 58. 82. 60

0-1.0. + 1 58, 82, 56

O +1, 0, -1 58, 82, 56

Explanation:

Given:

Crystal shield (CuSO4 . 5H2O) dissolves in water in the large tank.CuSO4′5H2O(s) → CuSO4 (aq) + 5H2O(l)0.01 mm = thickness of film layer24.3 g crystal/100 g water at 275 K, density 1140 kg/m3Diffusion of CuSO4 in dilute aqueous solution 3.6x10-10 m2/s at 275 K

Concentration can be taken at an average of 55.93 kmol/m3, water density 1000 kg/m3The mass of CuSO4 that dissolves per unit area per unit time is called flux.The transfer rate per unit area from the crystal surface to the bulk solution is given by;\(\frac{dn}{dt} = D.

A\frac{dc}{dx}\)Where, D is diffusion coefficient A is the area of the interfacec is the concentration of the diffusing species in the filmx is the direction of diffusion

From the given data, crystal density can be calculated as;\(\frac{24.3}{100+24.3}=0.1955\)

Now, we can calculate the mass transfer flux from the given data;\(\frac{55.93}{159.61}=\frac{C_{CuSO_4}}{1140}\)\(C_{CuSO_4}=39.76 kmol/m^3\)\(J = -D\frac{dc}{dx}\)

Since the inner film is saturated, \(c_0 = 39.76 kmol/m^3\)

At the outer surface, there is no CuSO4 present and the concentration gradient is;\(\frac{39.76-0}{0.01*10^{-3}}= 3.976*10^6 kmol/m^4\)\(J = -3.6*10^{-10}*3.976*10^6\)\(= -1.43456*10^{-3} kmol/m^2s\)

Thus, the mass transfer flux is -1.43456 * 10^-3 kmol/m^2s.

The transfer rate per unit area from the crystal surface to the bulk solution is -1.43456 * 10^-3 kmol/m^2s.

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The enthalpy of reaction (ΔH) of the above chemical reaction is equal to -143 kJ/mol.

A chemical reaction can be defined as a chemical process that involves the continuous transformation (rearrangement) of the ionic, atomic or molecular structure of a chemical element by breaking down and forming chemical bonds, in order to produce a new chemical compound while new bonds are formed.

A balanced chemical equation can be defined as a chemical equation wherein the number of atoms on the reactant (left) side is equal to the number of atoms on the product (right) side.

Next, we would write the properly balanced chemical equation for this chemical reaction:

                                    3/2O₂ -----> 2/2O₃

Therefore, the enthalpy of reaction (ΔH) of the above chemical reaction is half the enthalpy of reaction (ΔH) of the initial chemical reaction:

Enthalpy of reaction (ΔH) = ½ × -286 kJ/mol

Enthalpy of reaction (ΔH) = -143 kJ/mol.

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A sample of matter that contains atoms that all have the same number of protons is an element.

These are called isotopes. They have the same number of protons and electrons, but different numbers of neutrons. Different isotopes of the same element have different masses.

A proton is a subatomic particle found in the nucleus of atom. The particle has a positive electrical charge, equal and opposite to the electron.

This is a tiny, dense region at the center of the atom. Protons have a positive electrical charge (+1) and a mass of 1 atomic mass unit (amu), which is about 1.67×10−27 kilograms. And,

A chemical element is a species of atoms that have a given number of protons, including the substance consisting only of that species. Unlike chemical compounds.

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Answer:

Answer: Easily recognized and are still alive today

Explanation:

The specific set of traits that may index fossils possess are as follows:

An index fossil may be defined as a type of fossil which is significantly utilized in order to define and identify geologic periods. Such fossils are dead and organic remains of past organisms that were preserved and buried deep into the soil millions of years ago.

Index fossils are those fossils that are remarkably utilized in order to demonstrate the dating of rocks.

Apart from the above-mentioned traits, index fossils may also possess some traits like they are distinctive, widespread, abundant in nature, limited in the geologic time period, etc.

Therefore, the specific set of traits that may index fossils possesses is well-mentioned above.

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Answer:

environmental issues

Explanation:

Answer:

i think the answer is yess

Answer:

Limes, Lemons, Vinegar, Stomach acid, Batteries, Sour Candy, etc.

Nitric Acid, Chloric Acid, Carbonic Acid, Citric Acid, Perchloric Acid, Flouric Acid, etc.

Hope this helps!

Explanation:

Answer:

2.35mL

Explanation:

The amount of space a substance holds is its volume.

Density = mass (g) /volume (L)

Where;

mole = mass/molar mass

Since 1 mol of Cu contains 6.022 × 10^22 atoms.

There are 2 x 10^22/6.022 × 10^22 moles in 2 x 10^22 atoms of copper

2 x 10^22/6.022 × 10^22

2/6.022 × 10^(22-22)

0.332 × 10^0

0.332mol

Mole = mass/molar mass

0.332 = mass/63.5

mass = 63.5 × 0.332

mass = 21.08g

Density = mass/volume

Density of copper (Cu) is 8.96 g/cm³

8.96 = 21.08/v

V = 21.08/8.96

V = 2.35mL or cm³

The following which are medical applications of radiation include the following below:

This is referred to as the transmission of energy through space and it usually occurs at the speed of light thereby making it a very fast method of heat transfer when compared to the others. Radiation are used for various purposes such as immigration for searching luggage etc.

It is also used for medical reasons such as cancer therapy as the radiation help in destroying the cancerous cells thereby making it easy for their removal from the body system. It is also used for genetic engineering in the creation of new types of substances through the modification of nucleic acids such as DNA etc.

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Option (a) is correct. The molarity of a solution formed by dissolving 0.300 moles of CuSO4 in enough water to yield 400.0 ml of solution is 0.750 M.

Molarity is also known as molar concentration. The Molar concentration is a measure of the concentration of a chemical species in particular of a solute in a solution in terms of amount of substance per unit volume of solution. Molarity is said to be a unit of the concentration of a chemical solution. It is the value moles of solute per liters of solution. Molar concentration does not remain constant when temperature changes because temperature affects the volume of a solution. Molarity can be expressed as,

 Molarity = moles of solute * 1000 / volume of the solution

We have to calculate molarity by dissolving 0.300 moles of cuso4 in enough water to yield 400.0 ml of solution.

  Molarity = 0.3 * 1000/400

                 = 0.750 M

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The reaction equation given is B: 4NH3 + 6NO → 5N2 + 6H2O.

From this equation, we can see that for every 4 moles of NH3 (ammonia), 5 moles of N2 (nitrogen gas) are produced.

To find the number of moles of nitrogen gas produced from the production of 250 grams of water, we need to first find the number of moles of water produced. We can use the molar mass of water, which is 18 grams per mole, to convert the mass of water to moles:

moles of water = 250 grams / 18 grams/mole = 13.89 moles

Next, we can use the stoichiometry of the reaction to determine the number of moles of nitrogen gas produced. According to the reaction equation, for every 6 moles of water produced, 5 moles of nitrogen gas are produced:

moles of nitrogen gas = 5 moles / 6 moles * 13.89 moles = 11.57 moles

So, 11.57 moles of nitrogen gas are produced when 250 grams of water are produced in reaction B.

Answer:

no

Explanation:

An example of a case in which a wave is absorbed by matter is light seen through a glass window.

Matter is district from waves. A wave is a form of energy which could be absorbed by matter on its path. This is common with both mechanical and electromagnetic waves.

Hence, an example of a case in which a wave is absorbed by matter is light seen through a glass window.

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Explanation:

Metallic bond, force that holds atoms together in a metallic substance

Explanation:

this are compounds being that they are combined together

The amount of chlorine will be 0.791 gram required to completely react with 0.0223 moles of sodium iodide .

The given chemical reaction is :

2Nal + \(Cl_{2}\) → 2NaCl + \(I_{2}\)

It is given that:

Amount of sodium iodide = 0.0223 mol.

Atomic mass of chlorine = 35.45 g.

The amount of chlorine can be calculated as:

0.0223mol. NaI × (1mol. Cl₂/2mol. NaI) × (35.45g/1mol. Cl2)

=0.791 grams

Therefore, the correct answer will be option (D).

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