the process of separating a liquid/solid mixture by slowly pouring the liquid component into a new vessel as the solid settles to the bottom of the original vessel is known as

The molarity of this solution is 1.39 M.

Molarity, on the other hand, refers to the content of a substance or ion in a solution, whereas normality only refers to the molar concentration of the solution's acid or base components.

The formula is as follows:

Molarity (M) = moles of solute/liters of solution

We must first locate the copper(II) sulphate molecules. By splitting the solute's mass by its molar mass, we can determine this.

The molar mass of copper(II) sulfate is:

63.55 g/mol (for copper) + 2(32.06 g/mol) (for sulfur) + 4(16.00 g/mol) (for oxygen) = 159.61 g/mol

So, moles of copper(II) sulfate = 55.423 g / 159.61 g/mol = 0.347 moles

The volume of solution is 250.0 mL=0.250 L

Use the formula to calculate the molarity:

Molarity=0.347 moles / 0.250 L

= 1.39 M.

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Answer:

below :)

Explanation:

Question: how can you observe a chemical change?

well first let’s review what even are a chemical changes characteristic, which are: color change, formation of a precipitate, formation of a gas, odor change, temperature change

Also as we know, unlike a physical change, a chemical congé can’t reverse back

Ex- physical change would be water, since it can always change back and through it’s different forms

Ex - chemical change would be baked dough, since the temperature increased, causing the dough to change chemically and be cooked. Hence, it can’t be changed back.

With this information, you could write:

There are five main ways to observe a chemical change. These include a change in color, odor change, formation of a gas, temperature change, and formation of precipitate. First, an example of a chemical color change is metal rusting over time. The color of metal, which is a silver, changes to a orange/brown color and cannot be changed back. Secondly, a formation of precipate change would be soap, “which is actually a precipitate that forms when minerals in hard water react with soap molecules.” (Five Characteristics of a Chemical Change) Thirdly is a formation of gas, which would be like burning would, since it relases smoke, aka a gas. Fourthly, and odor change, which would be an egg rotting. Over time, as the egg last, it starts to rot as it’s chemical coumpinds breakdown and cannot be reversed. Lastly, a temperature change. An example of this is when you mix two chemicals together and they release heat. These are all examples of chemical changes and how to spot them.

Article that helped me with examples: https://sciencing.com/5-ways-chemical-change-occurred-10025863.html

Have a nice day!

Answer:

1242

Explanation:

The functional group that is reduced in the process of reducing Benzil is the carbonyl group, which is converted into a hydroxyl group. The reducing agent used in the reaction is typically a strong reducing agent such as sodium borohydride or lithium aluminum hydride.

In the process of reducing Benzil, the functional group that is reduced is the carbonyl group, which is converted into a hydroxyl group. This reduction reaction is typically carried out using a strong reducing agent such as sodium borohydride or lithium aluminum hydride.

The reducing agent donates electrons to the carbonyl group, causing it to be reduced to an alcohol. The reaction typically takes place in a solvent such as ethanol or methanol, and is usually carried out under reflux conditions.

The reduction of Benzil is an important reaction in organic chemistry, as it allows for the conversion of a carbonyl group into a hydroxyl group, which can then be further functionalized. The reaction is widely used in the synthesis of various organic compounds, and is an important tool for organic chemists.

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Answer:

375.3KJ

Explanation:

The following data were obtained from the question:

Mass of water = 166g

Heat of Vaporisation (ΔHv) = 40.7kJ/mol

Heat (Q) =..?

Next, we shall determine the number of mole in 166g of water. This is illustrated below:

Mass of H2O = 166g

Molar mass of H2O = (2x1) + 16 = 18g/mol

Number of mole = Mass/Molar Mass

Number of mole of H2O = 166/18

Number of mole of H2O = 9.22 moles.

Now, we can obtain the heat required to vaporise the water as shown below:

Q = n·ΔHv

Q = 9.22 mol x 40.7kJ/mol

Q = 375.3KJ

Therefore, the heat required to vaporise the water is 375.3KJ.

Answer:

Explanation:

The objects velocity will decrease because the force is opposing its motion

Diffusion is an example of increased dispersal of matter(C).

Diffusion is the process by which particles or molecules move from an area of higher concentration to an area of lower concentration. It occurs in gases, liquids, and solids.

During diffusion, particles spread out and become evenly distributed, leading to an increased dispersal of matter. This process is driven by the random motion of particles and does not require any external energy input.

Solvation, on the other hand, refers to the process of a solute being dissolved in a solvent, which may or may not result in increased dispersal depending on the specific situation.

Sublimation is the direct transition of a substance from a solid to a gas phase without passing through the liquid phase, which can also lead to increased dispersal but is not as general as diffusion. Therefore, the correct answer is "O diffusion."

So C option is correct.

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Answer:

Chemical fertilizer impact the environment by the following ways:

Answer:

the properties of the object

Explanation:

White light is that light that contains all the colours in the visible spectrum. We see colors of an object when white light hits that particular object. Hence, what happens to white light is dependent on the properties of the object it hits. For example; if white light hits an object and all the wavelengths of light gets reflected, we observe a white color.

A red object will appear red because when white light hits it, it reflects only red light and absorbs every other wavelength of colors in the white light. Thus, the properties of the object hit determines the resulting effect of the white light that hits it.

Answer:

the properties of the object and if not its then the speed at which the light travels

Explanation:

may i get brainliest please

Answer:

The correct answer is Mg

Answer:

5 on k-12 that's the answer

Explanation:

Explanation:

nah so easy

it's a direction of electron spinning in the shell

+½ means electron spinning in clockwise direction

-½ means electron spinning in anticlockwise direction

Oxygen has a relatively low solubility coefficient and therefore requires a steep (high) partial pressure gradient to help diffuse the gas into the blood.

Solubility is described as the limiting amount of an element that can dissolve in any amount of solvent at a set temperature. Since oxygen has a low coefficient of this, it requires the help of a higher partial pressure gradient to diffuse properly into the bloodstream.

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Answer: Yes it can help make cake rise.

Explanation: Its a leavening agent and its a good ingredient for baking.

The phospholipid substance that helps keep alveoli open is called surfactant.

Surfactant is a complex mixture of phospholipids, proteins, and other substances that is produced by the type II alveolar cells in the lungs. It is primarily composed of phospholipids, with the most abundant being dipalmitoyl phosphatidylcholine (DPPC). Surfactant is released onto the inner surface of the alveoli and forms a thin layer that reduces surface tension. The main function of surfactant is to decrease the surface tension within the alveoli, preventing them from collapsing during expiration. This allows for easier and more efficient gas exchange in the lungs. Without surfactant, the alveoli would become stiff and require greater effort to inflate during each breath.

Therefore, surfactant plays a crucial role in maintaining the patency and functionality of the alveoli by reducing surface tension and preventing their collapse.

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Answer:

12 moles H₂O

Explanation:

To find the amount of water produced, you need to use the given amount and multiply it by the mole-to-mole ratio from the equation. These numbers are the coefficients of the molecules you are converting from and to. When writing the ratio, make sure to arrange it in a way that allows for the cancellation of units.

1 C₆H₆ + 9 O₂ ----> 6 CO₂ + 6 H₂O

2 moles C₆H₆          6 moles H₂O
---------------------  x  -------------------------  =  12 moles H₂O
                                 1 mole C₆H₆

The pressure on the inside of the other side of the bottle is; 130kPa and this is by virtue of Pascal's Principle.

According to Pascal’s principle, otherwise called Pascal’s law, in fluid (gas or liquid) mechanics, the statement goes thus, In a fluid at rest in a closed container, a pressure change in one part is transmitted without loss to every portion of the fluid and to the walls of the container in which the fluid is contained.

On this note, it follows that the pressure is transmitted to the walls of the bottle.

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Answer:

Explanation:

The new pressure can be found by using the formula for Boyle's law which is

\(P_1V_1 = P_2V_2\)

Since we are finding the new pressure

\(P_2 = \frac{P_1V_1}{V_2} \\\)

So we have

\(P_2 = \frac{325000 \times 2.41}{1.67} = \frac{783250}{1.67} \\ = 469011.97...\)

We have the final answer as

Hope this helps you

A monoprotic acid is an acid that can donate only one proton per molecule.  The following are not monoprotic acids: a. H3PO4, c. H2C2O4, and d. H2S.

The acids in the answer choices are all polyprotic acids, which means that they can donate more than one proton per molecule.

H3PO4 is a triprotic acid, which means that it can donate three protons.

H2C2O4 is a diprotic acid, which means that it can donate two protons.

H2S is a diprotic acid, which means that it can donate two protons.

The only monoprotic acid in the answer choices is b. CH3CO2H, which is also known as acetic acid. Acetic acid can only donate one proton per molecule.

Therefore, option a, c, and d are correct.

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Answer:

Electron microscopy and scanning tunneling microscopes contributed to the understanding of atoms in understanding atomic structure.

The electron microscope has magnifications of about 100,000x.

This helped the scientists to have accurate image groupings of the atoms. Scanning tunnel microscope helped scientists to have the images of groups of atoms.

Therefore, the percent by weight composition of the gas formed from the combination of one pound of sulfur and one pound of oxygen is 50% sulfur and 50% oxygen.

To determine the percent by weight composition of the gas formed when one pound of sulfur combines with one pound of oxygen, we need to calculate the individual weights of sulfur and oxygen in the compound.

The atomic weight of sulfur (S) is approximately 32.06 g/mol, and the atomic weight of oxygen (O) is approximately 16.00 g/mol.

Since both sulfur and oxygen combine in a 1:1 ratio, one pound of sulfur is equal to one mole of sulfur, and one pound of oxygen is equal to one mole of oxygen.

The total weight of the compound is the sum of the weights of sulfur and oxygen, which is:

Weight of sulfur + Weight of oxygen = 1 pound + 1 pound = 2 pounds

To find the percent by weight composition of the gas, we calculate the weight percentage of each element in the compound:

Weight percentage of sulfur = (Weight of sulfur / Total weight) × 100

Weight percentage of oxygen = (Weight of oxygen / Total weight) × 100

Substituting the values:

Weight percentage of sulfur = (1 pound / 2 pounds) × 100 = 50%

Weight percentage of oxygen = (1 pound / 2 pounds) × 100 = 50%

Therefore, the percent by weight composition of the gas formed from the combination of one pound of sulfur and one pound of oxygen is 50% sulfur and 50% oxygen.

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Answer:suffer 66.7 percent oxygen 33.3 percent

Explanation:

The atomic weight of sulfur (S) is approximately 32.06 g/mol, and the atomic weight of oxygen (O) is approximately 16.00 g/mol. Add them together to get the total weight of 48.06. Then calculate the percent of each. Suffer is 32.06 divided by 48.06 times 100 equals 66.7. Oxygen is 16 divided by 48.06 times 100 equal 33.3.

Answer:

Beta β

Explanation:

Beta particles are negatively charged electrons emitted by the nucleus on decay

Answer:At STP, a mole of gas takes up 22.4 liters.

(This information can be deducted from ideal gas law)

So 15 liters correspond to x moles:

22.4 —- 1 mole

15 —- x

x = 0.67 moles

The complete combustion is the reaction:

CH4 (for example) + 2 O2 -> CO2 + 2 H2O

it is the same than

1/2 CH4 + O2 -> 1/2 CO2 + H2O

So the dioxide carbon producted will be 0.67/2 moles. Or, it will be 15/2 = 7.5 liters.

Notice that I used CH4 but I might used any organic compound instead. I used CH4 to be more pratical resulting 1 carbon atom in each side of the chemical equation.

Explanation:

The equilibrium chemical equation Rb(s) + Cl₂(g) RbCl₂(s) has the appropriate product(s) for the reactivity of rubidium.

Magnesium chloride (MgCl₂) is created when the elements magnesium (Mg) and chlorine (Cl₂) mix. As a result, the reaction is a combination reaction, and the equation that balances it is as follows: Mg(s)+Cl₂(g)→MgCl₂(s)

For instance, salt chlorate, a typical household bleach, is created when chlorine, Cl₂, interacts with sodium hydroxide, NaOH, in a disproportionation process. Sodium and chlorine combine to make sodium chloride, a common table salt.

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When the child sits on the partially filled balloon, the pressure of the balloon increases. The pressure change is a doubling of the initial pressure, indicating a factor of 2 increase.

When the child sits on a partially filled balloon, the volume of the balloon decreases by half. According to Boyle's Law, which states that the pressure of a gas is inversely proportional to its volume at constant temperature, the pressure inside the balloon increases.

Let's consider the initial volume of the balloon as V and the initial pressure as P. When the volume decreases by half, it becomes V/2. Since the amount of gas remains constant, the pressure increases to maintain equilibrium. The new pressure can be denoted as P'.

According to Boyle's Law, P₁V₁ = P₂V₂, where P₁ and V₁ are the initial pressure and volume, and P₂ and V₂ are the final pressure and volume. Plugging in the values, we have P * V = P' * (V/2).

Simplifying the equation, we get P' = 2P. This means the pressure of the balloon increases by a factor of 2, or it doubles. So, the pressure change can be expressed as an increase of two times the original pressure.

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Answer:

Because the equilibrium constant is only at constant at temperature. Changing the temperature changes the Ka.

The elements shown have an atomic mass of 20 amu is Neon.

The atomic number of an atom is its total number of protons and neutrons.

Neon has an atomic mass of about 20 this isotope contains 10 protons and 10 neutrons.

Actually, Neon would be listed as having an atomic mass of about 20.18 because of a mixture of isotopes.

Z= Atomic number the number of protons in the nucleus which defines the element.

In this case,  Z=10 and this means neon but there are also 10 neurons in the nucleus of the major isotope which gives it 20Ne.

Hence, option D is the correct answer.

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Answer:

The answer is 16.00 amu

Answer: true

Explanation: because Mass percentage composition is found by calculating a fraction of the total mass by each element present in a compound. The whole compound itself would equal one or 100% in all the elements that make it up would only be a fraction, so it will always have to add up to 100%