for acetylsalicylic acid (aspirin), , is .

for hypochlorous acid, , is .

for phenol (a weak acid), , is .

What is the formula for the strongest acid?

Drag and drop your selection from the following list to complete the answer:

HC9H7O4 C6H5OH HClO

Answer:

19,199,280 grams

Explanation:

0.062502343837894 grams in one mole of oxygen

Answer:

atoms in the nucleus

Explanation:

if you read very well

Answer:

Explanation:

CaCO3 = 1*Ca + 1*C + 3*O

              =1*40 + 1*12 + 3*16

               =40 + 12 + 48

               =100 amu

To predict which compound in each group is more soluble in water, we'll consider their molecular structures and their ability to form hydrogen bonds with water.

A more detailed explanation of the answer.
A) Butan-1-ol, pentan-1-ol, or propan-2-ol:
Propan-2-ol is more soluble in water due to its smaller size and the hydroxyl group (-OH) being attached to the central carbon. This allows it to form stronger hydrogen bonds with water, increasing its solubility.

B) Chlorocyclohexane, cyclohexanol, or cyclohexane-1,2-diol:
Cyclohexane-1,2-diol is more soluble in water due to the presence of two hydroxyl groups, which can form multiple hydrogen bonds with water molecules, increasing its solubility.

C) Phenol, cyclohexanol, or 4-methylcyclohexanol:
Cyclohexanol is more soluble in water among the three compounds. Phenol has a benzene ring that reduces its solubility, and 4-methylcyclohexanol has a methyl group that also reduces its solubility. Cyclohexanol, with only one hydroxyl group and no additional hindering groups, can form better hydrogen bonds with water, resulting in higher solubility.

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The complete reaction of 33.7 g of limestone produces 15.04 g of CO2. At STP, the volume of this CO2 is 7.30 L, calculated using the ideal gas law.

1) To determine the grams of CO2 formed by the complete reaction of 33.7 g of limestone, we first need to calculate the molar mass of CaCO3. CaCO3 has a molar mass of 100.09 g/mol. Next, we use stoichiometry to calculate the moles of CO2 produced by the reaction of 33.7 g of CaCO3.

33.7 g CaCO3 * (1 mol CaCO3/100.09 g CaCO3) * (1 mol CO2/1 mol CaCO3) * (44.01 g CO2/1 mol CO2) = 15.04 g CO2

Therefore, 15.04 grams of CO2 are formed by the complete reaction of 33.7 g of limestone.

2) To determine the volume in liters of this CO2 at STP (standard temperature and pressure), we use the ideal gas law, PV = nRT. At STP, the pressure is 1 atm and the temperature is 0°C (273.15 K). We also need to convert the grams of CO2 to moles using the molar mass of CO2, which is 44.01 g/mol.

n = m/M = 15.04 g / 44.01 g/mol = 0.342 mol

Using the ideal gas law, we can calculate the volume of CO2 at STP:

\(V = (nRT)/P = (0.342 mol * 0.0821 L atm K^-1 mol^-1 * 273.15 K) / 1 atm = 7.30 L\)

Therefore, the volume in liters of this CO2 at STP is 7.30 L.

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Answer:0

Explanation: zero because it is the most stable form of oxygen in its standard state

The calorimeter constant when 51.203g of water at 55.2c is added to a calorimeter containing 49.783g of water at 23.5c and for the system to equilibrate, the final temperature reached is 37.6c is  9.67J/gc.

Given mass of water (m1) = 51.203g

Temperature of water (T1) = 55.2c

mass of water (m2) = 49.783g

Temperature of water (T2) = 37.6c

the final temperature reached is = 37.6c

We know that specific heat (Q) = mCpΔT where m is mass Cp is latent heat and ΔT is change in temperature.

So Qwater = 51.203 x 4.184 x (23.5 - 55.2) = 6791.9J

Qcalo = 49.783 x Cp x (23.5 - 37.6) = 701.9 x Cp

Given that Qwater = Qcalo

6791.9J = 701.9 x Cp

Cp = 9.67J/gc

Hence the calorimeter constant is  9.67J/gc

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1. To identify reducing sugars, use the Benedict's test.
2. To distinguish between monosaccharides and disaccharides, use the Barfoed's test.
3. To distinguish between a pentose and a hexose, use the Seliwanoff's test.
4. To determine whether starch is present, use the Iodine test.

1. Benedict's test: This test detects the presence of reducing sugars, which have free aldehyde or ketone groups. When heated with Benedict's reagent, reducing sugars react and produce a color change ranging from green to red-orange, depending on the sugar concentration.
2. Barfoed's test: This test differentiates monosaccharides from disaccharides. When heated with Barfoed's reagent, monosaccharides react quickly and form a red precipitate, while disaccharides react more slowly or not at all.
3. Seliwanoff's test: This test is used to distinguish between pentoses and hexoses. When heated with Seliwanoff's reagent, pentoses produce a red color, while hexoses produce a yellow color.
4. Iodine test: This test detects the presence of starch. When iodine solution is added to a sample containing starch, the solution turns a blue-black color.
By using the Benedict's, Barfoed's, Seliwanoff's, and Iodine tests, you can identify reducing sugars, distinguish between monosaccharides and disaccharides, differentiate between pentoses and hexoses, and determine the presence of starch in carbohydrate samples.

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Answer:

A: The heat added represents an energy change.

Explanation:

Correct on EDG test

Answer:

The Earth's core is mainly made of iron and nickel.

Explanation:

Answer: The Earth's core is mainly made of iron and nickel.

Explanation:

Given data:H2O vapor content: 13 gramsH2O vapor capacity: 52 grams at 25 degrees Celsius 13 grams at 10∘C52 grams at 30∘CFormula used to find the dew point:$$\dfrac{13}{52}=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$$$\frac{1}{4}=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$

Where A is the constantDew Point:It is the temperature at which air becomes saturated with water vapor when the temperature drops to a point where dew, frost or ice forms. To solve this question, substitute the given data into the formula.$$13/52=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$$$13(17.27-A)=3\pi A(ln100)$$By simplifying the above expression, we get$$A^2-17.27A+64.78=0$$Using the quadratic formula, we get$$A=9.9,7.4$$

The dew point is 7.4 since it is less than 10°C.More than 100:The term "More than 100" has not been used in the question provided.

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According to the Brønsted-Lowry model, an acid and its conjugate base differ by a single proton, while a base and its conjugate acid differ by the addition of a single proton. If a reaction produces conjugate acid-base pairs, it supports this model.

To determine if the reaction supports the Brønsted-Lowry model of acids and bases, there are several questions that could be asked. Two possible questions are:

1. Does the reaction involve the transfer of protons (H+ ions) from one molecule to another.This is a key concept in the Brønsted-Lowry model, which defines acids as proton donors and bases as proton acceptors. If a reaction involves the transfer of protons, it supports this model.

2. Do the reactants and products contain conjugate acid-base pairs.

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Answer:

1. Did an acid donate a hydrogen ion to become a conjugate base?

2. Did a base accept a hydrogen ion to become a conjugate acid?

The correct answer is that the acid dissociation constant (Ka) for lactic acid is \(1.59 × 10^(-3)\) (to two significant figures).

Lactic acid is a weak acid that dissociates in water to produce hydrogen ions (H+) and lactate ions \((CH3CH(OH)COO-)\). The dissociation of lactic acid can be represented by the following equation: \(CH3CH(OH)COOH ⇌ H+ + CH3CH(OH)COO-\) . The equilibrium constant for this reaction is called the acid dissociation constant (Ka), which is defined as the ratio of the concentrations of the products (H+ and \(CH3CH(OH)COO-)\) to the concentration of the reactant (lactic acid).

\(Ka = [H+][CH3CH(OH)COO-]/[CH3CH(OH)COOH]\). The pH of a solution is defined as the negative logarithm (base 10) of the hydrogen ion concentration \((pH = -log[H+])\). Therefore, the concentration of hydrogen ions in a \(0.10 mM\) solution of lactic acid with a pH of 2.44 can be calculated as follows: \([H+] = 10^(-pH) = 10^(-2.44) = 3.98 × 10^(-3) M\)

Using the equilibrium equation and the hydrogen ion concentration, the acid dissociation constant (Ka) for lactic acid can be calculated as:

\(Ka = [H+][CH3CH(OH)COO-]/[CH3CH(OH)COOH] = (3.98 × 10^(-3))^2 / (0.10 × 10^(-3)) = 1.59 × 10^(-3)\)Therefore, the acid dissociation constant (Ka) for lactic acid is\(1.59 × 10^(-3)\) (to two significant figures).

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Answer:

59.9% is the percent yield for the 4.5 g of produced Al₂S₃

Explanation:

Let's determine the reaction:

3S  +  2Al  →  Al₂S₃

First of all, let's determine the limiting reactant. We need to convert the mass to moles:

4.8 g /32.06g/mol = 0.150 moles of S

5.4 g / 26.98 g/mol = 0.200 moles of Al

3 moles of S react to 2 moles of Al

Then, 0.150 moles of S may react to (0.150 . 2)/3 = 0.1 ,moles of Al

We have 0.200 moles and we only have 0.1. As we have excess of Al, this is the excess reactant. In conclussion, the limiting reagent is S.

2 moles of Al react to 3 moles of S

Then 0.2 moles of Al may react to (0.2 . 3) /2 = 0.3 moles of S. (We only have 0.150 moles)

Let's go to the product, 3 moles of S can produce 1 mol of Al₂S₃

Then 0.150 moles of S, may produce (0.150 . 1) /3 = 0.05 moles.

We convert moles to mass to determine the thoretical yield:

0.05 mol . 150.15g /mol =  7.50g

Percent yield = (Produced yield/Theoretical yield) . 100

% = (4.5g / 7.5g) . 100 = 59.9%

Answer:

Explanation:

a substance's enthalpy of fusion tells you how much heat is needed in order to convert

1 g

of said substance from solid at its melting point to liquid at its melting point.

In water's case, an enthalpy of fusion equal to

333.55 J g

−

1

tells you that

1 g

of ice at

0

∘

C

can be converted to

1 g

of liquid water at

0

∘

C

by supplying

333.55 J

of heat.

Your ice cube has a mass of

55.0 g

, which means that it will require

55.0

g

⋅

=

Δ

H

fus



333.55 J

1

g

=

18,345.25 J

Rounded to three sig figs, the number of sig figs you have for the mass of the ice cube, the answer will be

heat needed

=

∣

∣

∣

∣

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

a

a

18,300 J

a

a

∣

∣

−−−−−−−−−−

Answer:

1 and 3

Explanation:

The vertical columns (groups) of the periodic table are arranged such that all its elements have the same number of valence electrons. All elements within a certain group thus share similar properties.

The expected pH of the resulting solution is about 1.40. However, it's important to note that the answer choices provided in the question do not include this value.

Hydrochloric acid (HClO) is a strong acid, so it completely dissociates in water:

\(HClO(aq) = H^+(aq) + ClO^-(aq)\)

The initial concentration of HClO is 0.100 M, and 50.0 mL of 0.200 M NaOH is added to 250.0 mL of the HClO solution. The reaction that occurs is a neutralization reaction:

\(H^+(aq) + OH^-(aq) = H_2O(l)\)

The balanced equation shows that one mole of HClO reacts with one mole of NaOH. Therefore, the number of moles of HClO in the initial solution is:

n(HClO) = C(HClO) × V(HClO) = 0.100 mol/L × 0.250 L = 0.025 mol

When 50.0 mL of 0.200 M NaOH is added, the number of moles of NaOH added is:

n(NaOH) = C(NaOH) × V(NaOH) = 0.200 mol/L × 0.050 L = 0.010 mol

Because NaOH is a strong base, it completely dissociates in water:

\(NaOH(aq) = Na^+(aq) + OH^-(aq)\)

All of the \(OH^-\) ions react with \(H^+\) ions to form water. Therefore, the remaining \(H^+\) ion concentration is:

\([H^+] = [HClO] - [OH^-]\) = (0.025 mol)/(0.250 L + 0.050 L) - (0.010 mol)/(0.050 L) = 0.040 M

The pH of the solution is given by:

\(pH = -log[H^+]\) = -log(0.040) ≈ 1.40

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NH\(_3\) and H\(_2\)O are the major species present in a 0. 150-M NH solution. pOH is 2.79 and pH is 11.21.

pH (commonly known as acidity in chemistry, has historically stood for "the potential of hydrogen" (as well as "power of hydrogen").[1] This is a scale employed to describe how basic or how acidic an aqueous solution is. When compared to basic or alkaline solutions, acidic solutions—those with higher hydrogen (H+) ion concentrations—are measured with lower pH values.

Since NH3 is weak base . A weak base con not ionize completely to prodcue NH4+ and OH-.So the major species are NH3 & H2O only.

NH\(_3\)+H\(_2\)O→NH\(_4\)⁺ +OH⁻

Kb=[NH\(_4\)⁺ ][ OH⁻]/NH\(_3\)

1.8×10⁻⁵ =X²/0. 150

X=1.64×10⁻³

pOH = -log[1.64×10⁻³]

       = 2.79

pH =14-2.79=11.21

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A carbon-hydrogen bond in ethane (CH3CH3) is best described essentially nonpolar. Option B is correct.

A nonpolar bond is one in which electrons are shared equally between atoms.In Ethane, the carbon atom has four valence electrons, while the hydrogen atom has one valence electron. The carbon atom forms four covalent bonds to the hydrogen atoms. Since the hydrogen atoms are equivalent, all of the carbon-hydrogen bonds are identical.

Each of the carbon-hydrogen bonds has a bond distance of 109.5°.Ethane is a hydrocarbon with the formula C2H6. It is an alkane with two carbon atoms. It's also known as a saturated hydrocarbon because all of its carbon atoms are bonded to as many hydrogen atoms as possible. Because of this, it contains only single bonds between atoms.Each carbon in ethane is surrounded by four other atoms and has a tetrahedral geometry.

Since the electronegativity of carbon and hydrogen atoms is quite close, the carbon-hydrogen bonds in ethane are nonpolar and symmetric. Because the electronegativity values of carbon and hydrogen are close, there is no significant polarity between the carbon-hydrogen bonds. Therefore, the carbon-hydrogen bond in ethane is best described as essentially nonpolar.

Therefore, Option B is correct.

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Answer:

lose 1 2+

Explanation:

I honestly don't know

The molar concentration of CO2 in a 4.26 L sample of acid rain is 0.0081 mol/L.Acid rain is caused by air pollution.

The molar concentration of carbon dioxide in a 4.26L sample of acid rain is calculated as follows:First, we will calculate the number of moles of carbon dioxide in the sample. The formula to calculate the number of moles is:Number of moles = mass of the substance/molar mass of the substanceThe molar mass of CO2 is 44.01 g/mol. 355 ppm means 355 parts per million, which is equivalent to 355 mg/L.To calculate the mass of carbon dioxide in 4.26 L of acid rain:Mass of CO2 = Volume × ConcentrationMass of CO2 = 4.26 L × 355 mg/L = 1510.3 mg = 1.51 gTherefore, the number of moles of CO2 in the sample is:Number of moles of CO2 = Mass of CO2/Molar mass of CO2 = 1.51 g/44.01 g/mol = 0.0344 molTo calculate the molar concentration of CO2:Molar concentration of CO2 = Number of moles of CO2/Volume of solution in litersMolar concentration of CO2 = 0.0344 mol/4.26 L = 0.0081 mol/L, When sulfur dioxide and nitrogen oxide pollutants combine with atmospheric moisture, they form acidic compounds that can travel long distances and fall as acid rain. Acid rain can damage forests, kill fish in streams, and corrode buildings and monuments, among other things.

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Since we are starting from the number of atoms of Sulfur, we need to know two sets of formulas:

        ⇒ mass = (atoms ÷ Avogadro's Number) ×  molar mass

  mass = [(2.01 × 10²⁴ atoms) ÷ (6.022 × 10²³ atoms/mole)] × (32.06 g/mol)  

            = 107.01 g

The molar mass of sulfur S is 32.06 g/mol, then the mass in grams of a sample of S containing 2.01x10^24 atoms  is 107.01 g

The molar mass can be defined as the weight of one sample mole, by Multiplying  the subscript means  the number of atoms times that element’s atomic mass and add the masses of all the elements in the molecule to obtain the molecular mass.

Molar mass is  expressed in either gram ( g) or kilograms (kg).

Mass  = moles × molar mass

moles = atoms ÷ Avogadro's Number

       ⇒ mass = (atoms ÷ Avogadro's Number) ×  molar mass

 mass = [(2.01 × 10²⁴ atoms) ÷ (6.022 × 10²³ atoms/mole)] × (32.06 g/mol)  

          = 107.01 g

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hope that helps !

Answer and Explanation:

To convert 120 kPa to atmospheres, we can use the following conversion factor:

1 atmosphere = 101.325 kPa

We can use this conversion factor to set up a proportion and solve for the number of atmospheres.

120 kPa * (1 atm / 101.325 kPa) = 1.184 atm

Therefore, 120 kPa is equivalent to approximately 1.184 atmospheres (rounded to three decimal places).

An identical cylinder containing hydrogen at the same pressure as a cylinder containing oxygen will contain more hydrogen molecules because hydrogen gas (H2) has a lower molar mass than oxygen gas (O2). This means that there are more H2 molecules in a given volume at a given pressure, as compared to O2.

Because hydrogen gas (H2) has a smaller molar mass than oxygen gas, an identical cylinder holding hydrogen at the same pressure will hold more hydrogen molecules (O2). This indicates that compared to O2, there are more H2 molecules in a given volume at a given pressure.

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Answer:

hydroxide is the one because it is the one HAHAH

Answer:

hydroxide, OB

Explanation:

hydroxide,OB

In Experiment 2, the gas produced at the negative electrode is typically hydrogen (H2).

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Answer: 7N

Explanation:

Answer:

Example of a fusion dish: combination of smoked salmon wrapped in rice paper, with avocado, cucumber and crab sticks. Fusion cuisine is cuisine that combines elements of different culinary traditions that originate from different countries, regions, or cultures.