Aqueous sulfuric acid H2SO4 reacts with solid sodium hydroxide NaOH to produce aqueous sodium sulfate Na2SO4 and liquid water H2O . If 12.5g of water is produced from the reaction of 72.6g of sulfuric acid and 77.0g of sodium hydroxide, calculate the percent yield of water. Be sure your answer has the correct number of significant digits in it.

Whole wheat loaves accounted for approximately 23.08% of the total bread sold.

To determine the percentage of whole wheat loaves out of the total bread sold, we need to calculate the proportion of whole wheat loaves and express it as a percentage. In July, the bakery sold 2070 loaves of whole wheat bread, and in total, they sold 9000 loaves of bread.

To find the percentage, we divide the number of whole wheat loaves by the total number of loaves and multiply by 100:

Percentage of whole wheat loaves = (2070 / 9000) * 100 = 23.08%

Therefore, approximately 23.08% of the bread sold were whole wheat loaves.

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The enthalpic term is favorable, while the entropic term is unfavorable for the formation of secondary structure motifs.

In the context of secondary structure motifs like α-helices or β-sheets, the enthalpic term refers to the energy changes associated with the formation of hydrogen bonds and other stabilizing interactions within the motif.

The enthalpic term is generally favorable for the formation of secondary structures since the establishment of these interactions contributes to the stability and structural integrity of the motif.

On the other hand, the entropic term relates to the changes in molecular freedom or disorder upon the formation of secondary structure motifs.

When a protein adopts a specific secondary structure, there is a reduction in conformational flexibility, resulting in a decrease in entropy.

This entropic term is typically unfavorable for the formation of secondary structures since it restricts the range of accessible conformations for the protein.

Overall, the enthalpic term, driven by favorable interactions, promotes the formation of secondary structure motifs, while the entropic term, driven by reduced conformational flexibility, poses an unfavorable contribution to the process.

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Liquefaction of gases is the process by which a gas is converted into a liquid. This process is usually accomplished by applying pressure and cooling the gas. It is essential for the production of many industrial products, such as oxygen, nitrogen, argon, and carbon dioxide. It is also used in the production of cryogenic liquids, such as liquid nitrogen and liquid helium, which are used in many applications, such as cooling and food processing.

Process Involved in Liquefaction

The process of liquefaction is often accompanied by an increase in volume, as the molecules become more densely packed when they condense.

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Zn + 2Cl- → ZnCl₂ (ionic equation)

Zinc is described as being oxidised in this reaction because it loses electrons to form positively charged zinc ions (Zn²+). In other words, zinc is being oxidised from its elemental state to an ionised state.

Answer:

energy story for lactic acid fermentation

Explanation:

the reactants are pyruvate NADH and proton

Answer:

Manipulated (independent) Variable and Responding (Dependent) Variable

Answer:

i think its a

Explanation:

The Molar concentration of your analyte solution is 1.17 m

Make use of the titration formula.

The formula is molarity (M) of the acid x volume (V) of the acid = molarity (M) of the base x volume (V) of the base.

if the titrant and analyte have a 1:1 mole ratio. (Molarity is a measure of a solution's concentration represented as the number of moles of solute per litre of solution.)

26 x 1.8 = 40 x M

M = 26 x1.8 /40

M = 1.17

The Molar concentration of your analyte solution is 1.17 m

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A Maalox antacid tablet containing 0.350 g of CaCO₃ will neutralize approximately 0.255 g of hydrochloric acid.

In order to determine how many grams of acid will be neutralized by a Maalox antacid tablet containing 0.350 g of CaCO₃, we need to follow these steps:
Step 1: Write the balanced chemical equation for the reaction between CaCO₃ (calcium carbonate) and HCl (hydrochloric acid), which is a common acid found in the stomach.
CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂
Step 2: Calculate the molar mass of CaCO₃.
Ca: 40.08 g/mol, C: 12.01 g/mol, O: 16.00 g/mol
Molar mass of CaCO₃ = 40.08 + 12.01 + (3 x 16.00) = 100.09 g/mol
Step 3: Determine the moles of CaCO₃ in the antacid tablet.
moles of CaCO₃ = mass / molar mass = 0.350 g / 100.09 g/mol ≈ 0.0035 mol
Step 4: Use the stoichiometry of the balanced chemical equation to find the moles of HCl neutralized.
1 mol of CaCO₃ neutralizes 2 moles of HCl, so:
moles of HCl neutralized = 0.0035 mol of CaCO₃ x 2 = 0.0070 mol
Step 5: Calculate the mass of HCl neutralized.
Molar mass of HCl = 1.01 g/mol (H) + 35.45 g/mol (Cl) = 36.46 g/mol
mass of HCl neutralized = moles x molar mass = 0.0070 mol x 36.46 g/mol ≈ 0.255 g

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The yield is 37% as a percentage.

The reaction's equation is Sb4O6 + 6C -> 4Sb + 6CO.

Sb4O6 has a molecular mass of 28.1 g/292 g/mol, or 0.096 moles.

We can infer from the query that C is the overreactant.

If 1 mole of Sb4O6 yields 4 moles of Sb, then 0.096 moles of Sb4O6 yield 0.096 moles 4 moles/1 mole = 0.384 moles.

Theoretical yield of Sb is equal to 0.384 moles times 122 g/mol, or 46.8 g.

Percent yield is equal to 17.3 g/46.8 g x 100/1, or 37%.

When atoms establish or break chemical bonds, reactions take place. Reactants are the substances that start a chemical reaction, while products are the substances that come out of the process.

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The rate constant at 144.0°C is approximately 2.2 × 10^3 M^(-1)s^(-1).

To calculate the rate constant at 144.0°C using the Arrhenius equation, we can use the following formula:

k2 = k1 * exp((Ea / R) * ((1 / T1) - (1 / T2)))

Where:

k1 = rate constant at the initial temperature (59.0°C)

k2 = rate constant at the final temperature (144.0°C)

Ea = activation energy (37.0 kJ/mol)

R = gas constant (8.314 J/(mol·K))

T1 = initial temperature in Kelvin (59.0 + 273.15)

T2 = final temperature in Kelvin (144.0 + 273.15)

Plugging in the values into the formula:

k2 = (1.5 × 10^3 M^(-1)s^(-1)) * exp((37.0 × 10^3 J/mol) / (8.314 J/(mol·K)) * ((1 / (59.0 + 273.15)) - (1 / (144.0 + 273.15))))

k2 = (1.5 × 10^3) * exp(14.784 * (0.003165 - 0.001512))

Finally, rounding the answer to two significant digits:

k2 ≈ 2.2 × 10^3 M^(-1)s^(-1)

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Answer:

Neuron Tissues

Explanation:

Answer:

A. stimulants

Explanation:

The compound's mole ratio in a laboratory setup is 3125.12 g/mol, according to the statement.

Water that is completely free of ions is said to be pure. This could conduct electricity as a result. The inclusion of ions in the mixture allows the solution to carry an electric current when other substances, such as ionic compounds, are dissolved in water.

Osmotic pressure is given by;

π = C * R * T

∵ 760 mmHg = 1 atm

10.3 mmHg = 1 * 12.2/760 atm

= 0.016 atm

π = no. of moles * R * T/volume (L)

π = Weight (g) * R * T / Molar mass * V (L)

0.016 atm = 2.494 * 0.082 L atm K⁻¹ mol⁻¹ * 298 K/ M.W * 195 * 10⁻³

M.W = 3125.12 g/mol

Consequently, the compound's molar mass is 3125.12 g/mol.

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The boiling point of an element is largely determined by its intermolecular forces, which in turn are affected by factors such as atomic size, electronegativity, and the number of electrons.

In the case of strontium, which has a boiling point of 1382°C, the element with the most similar boiling point is likely to be one that is in the same group as it on the periodic table. This is because elements in the same group tend to have similar electronic configurations and atomic radii. Therefore, barium, which is in the same group as strontium, is likely to have a boiling point that is most similar. On the other hand, elements in different groups will likely have very different boiling points. For example, fluorine, which is in a different group than strontium, will likely have a boiling point that is least similar to that of strontium.

On the other hand, a non-metal element from a different group, like fluorine (F) in Group 17 and Period 2, would have a boiling point least similar to strontium due to the significant difference in their chemical properties and atomic structures.

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Due to double bonds in the carbon chain of an unsaturated fatty acid, there are fewer hydrogens than those found in saturated fatty acids.

An unsaturated fatty acid can be defined as a carboxylic acid that contains one or more carbon-carbon double bonds.

As a result of the double bonds in unsaturated fatty acids, they are liquid at lower temperature because they aren't tightly packed together.

Consequently, there are fewer hydrogens in unsaturated fatty acids than those found in saturated fatty acids because of the double bonds in its carbon chain.

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Answer:

24

Explanation:

The amount of 25% salt solution required is 60 liters.The amount of 10% salt solution required is 60 liters. A chemist has two solutions - a 25% salt solution and a 10% salt solution.

To make 120 liters of a 15% salt solution, we need to find how much of each solution is required. Let x be the number of liters of the 25% salt solution required and y be the number of liters of the 10% salt solution required.

According to the question, the total amount of salt in the solution is equal to the sum of the amount of salt in the two solutions used.

The amount of salt in the 25% solution is 25% of x liters. Similarly, the amount of salt in the 10% solution is 10% of y liters. Thus, the total amount of salt in the solution is given by:0.25x + 0.10yWe know that the total volume of the solution is 120 liters.

Thus, we can write:x + y = 120. We also know that the concentration of salt in the final solution is 15%. Thus, we can write:0.15(120) = 0.25x + 0.10ySimplifying the above equations,

we get:x + y = 1200.25x + 0.10y = 18. Substituting x = 120 - y in the second equation, we get:0.25(120 - y) + 0.10y = 1820 - 0.15y = 18y = 40x = 80Thus, the amount of 25% salt solution required is 80 liters and the amount of 10% salt solution required is 40 liters.

The amount of 25% salt solution required is 60 liters. The amount of 10% salt solution required is 60 liters.

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4.3 mL of 16.2 M \(NH3\)is required to prepare 350.0 mL of 0.200 M \(NH3\)

The molarity equation is:

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

We can rearrange this equation to solve for the number of moles of solute:

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

We can use this equation to determine the number of moles of \(NH3\)required to prepare the 350.0 mL of 0.200 M \(NH3\) solution:

moles of \(NH3\) = (0.200 M) x (0.350 L) = 0.070 moles \(NH3\)

Now, we need to determine the volume of 16.2 M \(NH3\)required to obtain 0.070 moles of \(NH3\). We can use the following equation:

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

Rearranging the equation to solve for the volume of solution, we get:

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

Plugging in the values, we get:

liters of solution = 0.070 moles  / 16.2 M\(NH3\) = 0.0043 L

Converting this to milliliters, we get:

volume of 16.2 M \(NH3\) = 0.0043 L x 1000 mL/L = 4.3 mL

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Answer:

3 atoms

Explanation:

X is the chemical symbol of the element

Answer:

there is none

Explanation:

your thinking of the symbol for chemical symbol for the element

Answer:

D

Explanation:

Electrons are being filled according to the increasing other of their sublevel energy

Taking into account the reaction stoichiometry, 2.4041 grams of K₂O can be produced from 2 grams of K and 5 grams of O₂.

In first place, the balanced reaction is:

4 K + O₂ → 2 K₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

The limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.

To determine the limiting reagent, it is possible to use a simple rule of three as follows: if by stoichiometry 32 grams of O₂ reacts with 156.4 grams of K, 5 grams of O₂ reacts with how much mass of K?

mass of K= (156.4 grams of K× 5 grams of O₂)÷ 32 grams of O₂

mass of K= 24.4375 grams

But 24.4375 grams of K are not available, 2 grams are available. Since you have less mass than you need to react with 5 grams of O₂, K will be the limiting reagent.

Considering the limiting reagent, the following rule of three can be applied: if by reaction stoichiometry 156.4 grams of K form 188 grams of K₂O, 2 grams of K form how much mass of K₂O?

mass of K₂O= (2 grams of K× 188 grams of K₂O)÷ 156.4 grams of K

mass of K₂O= 2.4041 grams

Then, 2.4041 grams of K₂O can be produced from 2 grams of K and 5 grams of O₂.

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Answer:

(Question) What does the Law of Conservation of Mass state?

(Answer) The total mass of all of the reactants prior to a chemical reaction must equal the total mass of all the products after the reaction.

(Question) If the mass of elements before a chemical reaction is 30 grams, after the chemical reaction, the mass will be __.

(Answer) 30 grams

(Question) 78 g of potassium (K) react with 71 g of chlorine (Cl) to produce potassium chloride. According to the Law of Conservation of Mass, what is the mass of the product (2KCl)?

(Answer) 149 g

(Question) 2 grams of potassium (K) reacts with 5 grams of Oxygen (O). According to the Law of Conservation of Mass, how many grams of potassium oxide (K2O) will be produced?

(Answer) 7

(Question) Which of the following equations demonstrates the Law of Conservation of Mass?

(Answer) CH4+O2→C+2H2O

Explanation:

just finished the quick check. hope this helps UwU

because it serves as engine

Filtration can be used to separate the water-soluble acetic acid from the aspirin. The limiting reagent will be salicyclic acid.

How can we determine the limiting reagent?

By dividing the volume of each solution by its molarity, you can determine how many moles of each reactant there are. By subtracting the number of moles of each reactant from its stoichiometric coefficient in the balanced chemical equation, you may determine which reactant is the limiting one.

How many grams of aspirin were created during the process of making it?

This resulted in an estimated value of 3.029 grams for crude synthesized aspirin. The final aspirin product's calculated mass after purification was 2.169 grams. A theoretical yield of 2.520 grams was computed.

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Answer:

Na2Co3 is the formula of sodium carbonate

If 28.0 grams of N2 and 5.04 grams of H2 are reacted, producing 17.8 grams of NH3. the percent yield is 52.4%. Therefore, the answer is option 3,

To calculate the percent yield, we first need to calculate the theoretical yield of NH3 based on the amounts of N2 and H2 that were reacted.

The balanced chemical equation for the reaction is:

N2 + 3H2 → 2NH3

From the equation, we can see that 1 mole of N2 reacts with 3 moles of H2 to produce 2 moles of NH3. Therefore, the moles of N2 and H2 reacted can be calculated as:

moles of N2 = mass of N2 / molar mass of N2

= 28.0 g / 28.014 g/mol

= 0.999 mol

moles of H2 = mass of H2 / molar mass of H2

= 5.04 g / 2.016 g/mol

= 2.5 mol

Since N2 is the limiting reactant (its mole value is less than H2's mole value), we can calculate the amount of NH3 produced based on the mole ratio of N2 and NH3:

moles of NH3 = 2/1 x moles of N2

= 2/1 x 0.999 mol

= 1.998 mol

The theoretical yield of NH3 can be calculated from its mole value:

mass of NH3 = moles of NH3 x molar mass of NH3

= 1.998 mol x 17.031 g/mol

= 34.06 g

Now, we can calculate the percent yield by dividing the actual yield (17.8 g) by the theoretical yield (34.06 g) and multiplying by 100:

percent yield = actual yield / theoretical yield x 100%

= 17.8 g / 34.06 g x 100%

= 52.24%

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Answer:

there r mainly three abiotic factors where all biotic factors need to thrust and survive,

They're i) Air

            ii) Water

           iii) Land

Answer:Water

Explanation: