A 0. 225L solution of H2CO3 is neutralized by 0. 0880L of a 1. 22 M Fe(OH)3 solution. What is the concentration of the H2CO3 solution?

To reset the simulation, click the orange circle in the bottom right. Then, check the white box with the energy symbol.

By clicking the orange circle in the bottom right, you will reset the simulation to its initial state, allowing you to start over. This is useful when you want to undo any changes or modifications you have made and return to the original setup. Once you have reset the simulation, make sure to check the white box with the energy symbol again. This box likely contains important information or controls related to the energy aspect of the simulation, which is crucial for understanding and manipulating the system accurately.

The orange circle in the bottom right. Resetting the simulation can be done by clicking on the orange circle located in the bottom right corner. This action reverts the simulation back to its original state, undoing any changes or adjustments that have been made. It provides a way to start over and ensures a clean slate for further experimentation or analysis. Additionally, after resetting the simulation, it is recommended to check the white box with the energy symbol.

This box likely contains relevant information, controls, or data related to the energy aspect of the simulation. Understanding and monitoring the energy dynamics are essential for accurately interpreting and manipulating the simulation's behavior. Therefore, regularly referring to the energy symbol box can provide valuable insights and enable effective adjustments to achieve desired outcomes.

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As we know that ΔH Reaction o=ΔH fo (Products)−ΔH fo (Reactant)

⟹ΔH Reaction o =−1669−(−822)=−847 kJ/mol

As ΔH ReactioN o<0. So, the reaction is exothermic.

By deducting the total enthalpies of all the reactants from the total enthalpies of the products, the reaction enthalpy is determined. According to mathematics, tH is equal to the sum of the enthalpies of the reactants and the product.

The enthalpy of any reaction, as we already know, depends on the environmental physical parameters like temperature, pressure, etc. Any reaction's standard enthalpy may be determined when both the reactants and the products are present in their standard forms, which is the case for all reaction participants. The enthalpy change that takes place in a system when a substance undergoes a chemical reaction under normal circumstances is hence known as the standard enthalpy of reaction.

Conventionally, every substance's pure form at a pressure of 1 bar is considered to be its standard condition at a given temperature. For instance, liquid ethanol is considered to be at its standard state when it is 298 K and 1 bar of pressure

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False. The addition of a solute to a solvent typically lowers the freezing point of the solution compared to the freezing point of the pure solvent.

This is due to the fact that the solute particles interfere with the arrangement of the solvent particles, which makes it more difficult for the solution to freeze. As a result, the solution has to be cooled to a lower temperature in order for it to freeze, which results in a lower freezing point compared to the pure solvent. Freezing point depression is a colligative property, which means that it depends on the concentration of solute particles in the solution, rather than on their chemical nature. When a non volatile  solute (a solute that does not evaporate at room temperature) is dissolved in a solvent, it increases the number of solute particles in the solution. These solute particles interfere with the arrangement of the solvent particles, making it more difficult for the solvent to freeze. As a result, the solution has to be cooled to a lower temperature in order for it to freeze, which results in a lower freezing point compared to the pure solvent. To summarize, the addition of a non volatile solute to a solvent typically lowers the freezing point of the solution, and therefore the statement "The freezing point of the solution is unchanged by the addition of the solvent" is false.

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An insulated cup contains 75 g of water at 24 °C. A 26 g sample of metal at 82.25°C is added. The final temperature of the water and metal is 28.34°C. The specific heat of the metal is 0.972 J/ g°C.

Given that :

Mass of the metal = 26 g

The specific heat of the metal = ?

Initial temperature of the metal = 82.25°C

Equilibrium temperature = 28.34°C

Mass of the water = 75 g

Specific heat of water = 4.18 J/ g°C

Initial temperature of the water = 24 °C

The specific heat capacity is given as :

26 × c × ( 82.25 - 28.34) = 75 × 4.18 ( 28.34 - 24)

26 × c × 53.91 = 313.5  × 4.34

c = 0.972 J/ g°C

Thus, the specific heat capacity of metal is 0.972 J/ g°C.

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The mass (in grams) of aluminum hydroxide produced when 4.46 g of sodium hydroxide reacts is 2.90 grams

First, we shall obtain the balanced equation for the reaction. This is given below

3NaOH + Al → 3Na + Al(OH)₃

From the balanced equation above,

120 g of NaOH reacted to produce 78 g Al(OH)₃

With the above information, we shall determine the mass of Al(OH)₃ produced from 4.46 grams of NaOH. Details below:

From the balanced equation above,

120 g of NaOH reacted to produce 78 g Al(OH)₃

Therefore,

4.46 g of NaOH will react to produce = (4.46 × 78) / 120 = 2.90 g of Al(OH)₃

Thus, the mass of aluminum hydroxide, Al(OH)₃ produced is 2.90 g

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According to the concept of solubility,  the minimum volume of water in dm³, at 30 °C, needed to dissolve 1989 kg sodium chloride is 5525 liters.

Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.

The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.

Volume of water required is calculated by formula, mass of sodium chloride/solubility×100=1989000/36×100=5525 liters.

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Answer:

A

Explanation:

We are usually asked to close the valve of the gas cylinder in our various kitchens at home due to the inflammable property of the Liquified Petroleum Gas.

Without closing the valve, the LPG would diffuse into our homes, and any form of spark would cause an explosion and lead to a fire. Lives and properties could be lost in the process.

The correct option is A.

Answer:

the answer is most definitely not A it is B

Explanation:

atomic number is always above the element letter at the very top and the number at the bottom is the atomic mass

The pH of the solution made by mixing 93 mL of 0.010 M HClO4, 41 mL of 0.040 M HCl, and 866 mL of water is 2.59

To solve this problem, we need to first determine the total amount of H+ ions in the solution, which will allow us to calculate the pH.

Calculate the amount of H+ ions from HClO4:

Amount of H+ ions from HClO4 = (93 mL) * (0.010 mol/L) = 0.93 mmol

Calculate the amount of H+ ions from HCl:

Amount of H+ ions from HCl = (41 mL) * (0.040 mol/L) = 1.64 mmol

Calculate the total amount of H+ ions in the solution:

Total amount of H+ ions = 0.93 mmol + 1.64 mmol = 2.57 mmol

Calculate the molarity of the H+ ions in the solution:

Total volume of solution = 93 mL + 41 mL + 866 mL = 1000 mL = 1 L

Molarity of H+ ions = (2.57 mmol) / (1 L) = 2.57 mM

Calculate the pH of the solution:

pH = -log[H+]

pH =\(-log(2.57 x 10^-3)\)

pH = 2.59

Therefore, the pH of the solution made by mixing 93 mL of 0.010 M HClO4, 41 mL of 0.040 M HCl, and 866 mL of water is 2.59.

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A polypeptide is a polymer made up of amino acids joined together by peptide bonds. Polypeptides can be classified as polyelectrolytes or non-polyelectrolytes based on their charge characteristics.

Polyelectrolytes are polymers that have an ionizable functional group, which means that they can dissociate in solution to produce ions that carry a charge. A non-polyelectrolyte is a polymer that does not have an ionizable functional group. Therefore, it does not dissociate in solution to produce ions that carry a charge. An example of a polypeptide that is not a polyelectrolyte is collagen.

Collagen is a fibrous protein that is found in the extracellular matrix of connective tissues such as tendons, ligaments, and cartilage. It is a long, triple-helical polypeptide chain that is made up of repeating units of the amino acid glycine, proline, and hydroxyproline. Collagen is a non-polyelectrolyte because it does not have any ionizable functional groups.

The amino acids that make up collagen do not have any charged side chains, which means that the polypeptide chain does not dissociate in solution to produce ions that carry a charge. Therefore, collagen is an example of a polypeptide that is not a polyelectrolyte.

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The balanced redox reaction in basic solution is: \(CIO(aq) + CO_2(aq) + OH^{-(aq)} \rightarrow CIO_2(g) + CO_2(g) + H_2O(l)\)

To balance this redox reaction in basic solution, we first need to identify the oxidation state of each element in the equation. We see that the oxidation state of chlorine changes from +1 to +4, while the oxidation state of carbon changes from +4 to +2.

Next, we balance the equation in acidic solution, as we normally would, and then add OH⁻ to both sides of the equation to neutralize the H⁺ ions and form water molecules. This adds an equal number of H⁺ and OH⁻ ions to both sides of the equation, so the charge balance is maintained.

After balancing the equation in basic solution, we make sure that the number of atoms of each element is the same on both sides, and that the charges are balanced. Finally, we add the phases of each species to complete the equation.

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The molecular formula of the unknown compound is C2H2O2.

To determine the molecular formula of the unknown compound, we need to calculate the empirical formula first and then find the multiple of its subscripts to obtain the molecular formula.

Given:

Percentage of carbon = 40.0%

Percentage of hydrogen = 6.7%

Percentage of oxygen = 53.3%

Molecular mass = 60.0 g/mol

Step 1: Convert the percentages to grams.

Assuming we have 100 grams of the compound:

Mass of carbon = 40.0 g

Mass of hydrogen = 6.7 g

Mass of oxygen = 53.3 g

Step 2: Convert the masses to moles using the molar masses of the elements.

Molar mass of carbon = 12.01 g/mol

Molar mass of hydrogen = 1.008 g/mol

Molar mass of oxygen = 16.00 g/mol

Number of moles of carbon = Mass of carbon / Molar mass of carbon

= 40.0 g / 12.01 g/mol

= 3.332 mol

Number of moles of hydrogen = Mass of hydrogen / Molar mass of hydrogen

= 6.7 g / 1.008 g/mol

= 6.648 mol

Number of moles of oxygen = Mass of oxygen / Molar mass of oxygen

= 53.3 g / 16.00 g/mol

= 3.331 mol

Step 3: Determine the empirical formula by dividing the moles by the smallest value.

Dividing the moles of carbon, hydrogen, and oxygen by 3.331 gives approximately 1 for each element.

So, the empirical formula of the compound is CHO.

Step 4: Determine the multiple of the subscripts to obtain the molecular formula.

To find the multiple, we divide the molecular mass by the empirical formula mass.

Molecular mass = 60.0 g/mol

Empirical formula mass = (12.01 g/mol) + (1.008 g/mol) + (16.00 g/mol) = 29.018 g/mol

Multiple = Molecular mass / Empirical formula mass

= 60.0 g/mol / 29.018 g/mol

= 2.07

Rounding to the nearest whole number, we get 2.

Therefore, the molecular formula of the unknown compound is C2H2O2.

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Answer:

rain

Explanation:

rain drops are water and water us a liquid

The downward slope represents the relation between durability of titanium and temperature because with increase temperature, strength of titanium decreases.

Titanium alloys have high tensile strength to weight ratio, good toughness and an ability to bear extreme temperatures of more than 600 °Celsius. This shows that if temperature increase from more than 600 °Celsius, the strength of the titanium tends to decrease because it can not withstand to it so the graph comes to downward when the temperature exceeds to 600°C.

So we can conclude that the downward slope represents the relation between durability of titanium and temperature because with increase temperature, strength of titanium decreases.

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Answer:

C

Explanation:

All three can become negative versions: negative ions

Answer:

It is going to be D because Group 1 A and 2 A are s block elements which are METALS, also they are not halogens as the 7 A group is called halogens, Plus they give +1 oxidation state so Correct answer is D as they are group 1 A elements so they have only one valence electron in their valence shell

Answer:

Explanation:

The molecular formula is the true chemical formula of a covalent molecular compound, and a multiple of the empirical formula. We can use the molar mass, along with the molar empirical mass, determined from the empirical formula, to determine the molecular formula of the compound.

Using, the percentage composition of each element, we can say: In each 100g of the compound, there is 49.47g (C), 5.201g (H), 28.84g (N), and 16.47g (O).

Therefore, we can now find the number of moles of each element, in 100g of compound. number of moles (n) = mass present (m) ÷ molar mass (M). Molar mass can be found using a standard IUPAC Periodic Table.

n(C) = m/M = 49.47/12.01 = 4.1191 mol

n(H) = m/M = 5.201/1.008 = 5.1597 mol

n(N) = m/M = 28.84/14.01 = 2.0585 mol

n(O) = m/M = 16.47/16.00 = 1.0293 mol

Since the empirical formula is one in which the proportions of each element are expressed in the simplest mole ratio, therefore:

C : H : N : O = 4.1191 : 5.1597 : 2.0585 : 1.0293

Divide each ratio by 4.1191 =

1 : 1.00985 : 0.4997 : 0.249, which is approximately equal to:

1 : 1 : 0.5 : 0.25 = 2 : 2 : 1 : 0.5 = 4 : 4 : 2 : 1

Therefore, empirical formula = C₄H₄N₂O.

Using empirical formula, we can calculate molar empirical mass, which is found by summing the molar atomic weights.

molar empirical mass = 4(12.01)+4(1.008) + 2(14.01) + 16.00 = 96.092.

The molar empirical mass is double the molar mass, and therefore, molecular formula must be half the empirical formula.

Therefore, molecular formula = C₂H₂NO

Answer:

True, Electrons are way smaller then protons

Explanation:

Answer:

density of sugar = 1.6 g/cm³

density of oil = 0.87 g/mL

Explanation:

1)

Given data:

Mass of object = 12.9 g

Volume of object = 8 cm³

Density of brown sugar = ?

Solution:

Formula:

d = m/v

d = density of object

m = mass of object

v = volume of object

Now we will put the values in formula.

d = 12.9 g/ 8 cm³

d = 1.6 g/cm³

2)

Given data:

Mass of oil  =  43.5 g

Volume of container = 50 mL

Density of oil = ?

Solution:

Formula:

d = m/v

d = density of oil

m = mass of oil

v = volume of oil

Now we will put the values in formula.

d = 43.5 g/ 50 mL

d = 0.87 g/mL

The glass containing the effervescence tablet has a greater air space than the other.

The term effervescence refers to the evolution of a gas. An effervescence tablet is a tablet that is designed to release the gas called carbon dioxide.

When we add the effervescence tablet and compare the level of the water in the two bowls, we will see that the water in the glass containing the effervescence tablet has a greater air space than the other.

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Answer:

This reaction is reversible, and you will only get significant amounts of the free amine if you use a large excess of ammonia. The product as a nucleophile.

Explanation:

\(C_3H_6\)  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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2 molecules of three carbon pyruvic acid is formed from one molecule of glucose (6-carbon) at the end of glycolysis. There is a net gain of 8 ATP molecules as a result of glycolysis.

Glycolysis is a cytoplasmic pathway which breaks down glucose into two three-carbon compounds and generates energy. Glucose is trapped through phosphorylation, with the assist of the enzyme hexokinase. Adenosine triphosphate (ATP) is used in this reaction and the product, glucose-6-P, inhibits hexokinase.

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In the first energy level, there is only one sublevel. In the second energy level, there are two sublevels. In the third energy level, there are three sublevels. In the fourth energy level, there are four sublevels. And In the seventh energy level, only the s, p, d, and f sublevels are considered.

In the study of atomic structure, each main energy level, also known as a shell, is divided into sublevels or subshells. The sublevels are designated by the letters s, p, d, and f.

The number of sublevels in each main energy level is determined by the value of n, the principal quantum number.

When n=1, there is only one sublevel possible, which is the s sublevel. Therefore, in the first energy level, there is only one sublevel, the 1s sublevel.

When n=2, there are two possible sublevels: the s and p sublevels. Therefore, in the second energy level, there are two sublevels, the 2s and 2p sublevels.

When n=3, there are three possible sublevels: the s, p, and d sublevels. Therefore, in the third energy level, there are three sublevels, the 3s, 3p, and 3d sublevels.

When n=4, there are four possible sublevels: the s, p, d, and f sublevels. Therefore, in the fourth energy level, there are four sublevels, the 4s, 4p, 4d, and 4f sublevels.

When n=7, there are seven possible sublevels: the s, p, d, f, g, h, and i sublevels. However, it should be noted that the g, h, and i sublevels are theoretical and have not been observed in nature. Therefore, in practice, only the s, p, d, and f sublevels are considered for the seventh energy level.

In summary, the number of sublevels in each main energy level is determined by the principal quantum number, with the possible sublevels being s, p, d, and f. The maximum number of sublevels possible for a given value of n is equal to n, but some of these sublevels may be theoretical and not observed in nature.

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Answer:

37%+24%+23%=84% , i wish my answer is correct

The final volume of the gas from the calculation is  15.4 L.

We know that the Avogadro's law states the relationship between the volume of the gas and the number of moles of the gas. According to the Avogadro's law,  the volume of a given mass of gas is directly proportional to the number of moles of the gas if the temperature and pressure of the gas is held constant. This is the case as we try to obtain the final volume of the gas in the context of this problem as we have it here.

If we have two masses of the same gas;

v1/n1 = v2/n2

v1 = initial volume of the gas

v2 = final volume of the gas

n1 = initial  number of moles of the gas

n2 = final number of moles of the gas

We now have;

40.0 L/3.25 moles = v2/1.25 moles

v2 = 40.0 L * 1.25 moles/3.25 moles

v2 = 15.4 L

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Answer:

b. boiling point

Explanation:

Answer:

Liner shape

Explanation:

Because BeCl2 has 2 bond pair and no lone pair it means it will have liner shape and 180 degree angle.

Answer:

liner compound

Explanation: