Alcohols contain which functional group? a amine b thiolc amidedd hydroxyl

The element in question is Avogadro's number, which is 6.022 x 10^23. Given that the mass of the element is 135 g and there are 3.01 x 10^24 atoms is 135 g / 3.01 x 10^24 atoms = 4.49 x 10^-23 g/atom

A fundamental object that is difficult to divide into smaller parts is known as an element. A substance that cannot be broken down by non-nuclear reactions is considered an element in chemistry and physics.

we can compare this atomic mass to the known masses of elements and find that the element in question is silver (Ag), which has an atomic mass of 107.87 g/mol.

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Answer: The answer is B. The pressure inside the tires increased.

Explanation:

The relationship between the pressure, volume, and temperature of a gas is described by the ideal gas law, which is usually written as:

\($$PV = nRT$$\)

where:

- \(\(P\)\) is the pressure,

- \(\(V\)\) is the volume,

- \(\(n\)\) is the number of moles of gas,

- \(\(R\)\) is the ideal gas constant, and

- \(\(T\)\) is the temperature (in Kelvin).

In this case, the volume \(\(V\)\) and the number of moles \(\(n\)\) of air in the tires stay the same. The temperature \(\(T\)\) is increasing. Therefore, for the equation to remain balanced, the pressure \(\(P\)\) must also increase.

So, the answer is B. The pressure inside the tires increased.

Best describe table sugar is considered a pure substance is Sugar has the same chemical composition throughout

Table sugar is pure sucrose derived from sugar beet or sugar cane and sucrose is the disaccharide consisting of glucose and fructose and it is produced by green plant in the process of photosynthesis and since the chemical composition of sugar is definite and does not vary hence it is pure substance and table sugar refer to standard while white sugar that you see in your cooking baking or cup of tea at home and the scientific name foe table sugar is sucrose

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Answer:

bnsjsbbakakaisbsbwnsjznss

Explanation:

cnsjzjsnsnsjs ssnsnsnzksmnznnzna

Answer:

reactants

Explanation:

Recovery = (Weight of product recovered ÷ Theoretical yield) × 100% Recovery = (0.251 g ÷ 0.27594 g) × 100% Recovery = 91.08%Therefore, the % recovery of the reaction between 2,3-dimethyl-1,3-butadiene and maleic anhydride to form cyclic anhydride was 91.08%.

Diels-Alder Reaction   Diels-Alder reaction is a chemical process that joins a conjugated diene with a dienophile (a compound containing a double bond) to form a six-membered ring called a cyclohexene ring. It is a chemical reaction that can be used to make new carbon–carbon bonds. The reaction was discovered by two German scientists, Otto Diels and Kurt Alder, in 1928.In the Diels-Alder reaction between 2,3-dimethyl-1,3-butadiene and maleic anhydride to form cyclic anhydride, the % recovery was calculated using the following data:Weight of maleic anhydride used: 185 mg = 0.185 gVolume of diene used: 0.215 mLWeight of cyclic anhydride crystals recovered: 0.251 g% Recovery:We can calculate the percent recovery using the following formula:% Recovery = (Weight of product recovered ÷ Theoretical yield) × 100The theoretical yield of the product can be calculated from the balanced chemical equation as follows:2,3-dimethyl-1,3-butadiene + Maleic Anhydride → Cyclohexene-1,2-dicarboxylic AnhydrideThe molar mass of 2,3-dimethyl-1,3-butadiene is 68 g/mol. The molar mass of Maleic Anhydride is 98 g/mol. The molar mass of Cyclohexene-1,2-dicarboxylic Anhydride is 146 g/mol.Using these values, we can calculate the number of moles of each reactant: moles of diene used = (0.215 mL)(0.788 g/mL)/(68 g/mol) = 0.00248 mol moles of maleic anhydride used = 0.185 g/98 g/mol = 0.00189 mol The theoretical yield of cyclohexene-1,2-dicarboxylic anhydride = 0.00189 mol × 1 mol/1 mol = 0.00189 molThe theoretical yield of cyclohexene-1,2-dicarboxylic anhydride = 0.00189 mol × 146 g/mol = 0.27594 gNow, we can substitute these values into the percent recovery equation:% Recovery = (Weight of product recovered ÷ Theoretical yield) × 100% Recovery = (0.251 g ÷ 0.27594 g) × 100% Recovery = 91.08%Therefore, the % recovery of the reaction between 2,3-dimethyl-1,3-butadiene and maleic anhydride to form cyclic anhydride was 91.08%.

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The actual final temperature of the air is 746.2 K.T-s .

Compression ratio\((r) = P2 / P1\) = 1500/100 = 15

Pressure ratio (R) = P2 / P1 = 1500/100 = 15Efficiency (η) = 89% = 0.89. The process is an adiabatic process. Therefore, Q = 0, and ΔU = W

Calculations: The work done on the air during the compression process is given by the equation: \(W = ΔU = mCv(T2 - T1)\)

Where: Cv is the specific heat capacity of air at constant volume,T1 is the initial temperature of the air, andT2 is the final temperature of the air.

The specific heat capacity of air at constant volume can be taken as

Cv = 0.718 kJ/kgK

The mass of air (m) compressed by the piston is not given. So, we can assume it to be 1 kg. Then, the work done (W) can be calculated as follows:

\(W = ΔU = mCv(T2 - T1)\)

= 1 × 0.718 × (T2 - T1)

The actual work done during compression process is 203.47 kJ

Actual final temperature:The final temperature of the air (T2) can be determined using the polytropic process equation:

\(P1V1^n = P2V2^n\)

Where:V1 and V2 are the specific volumes at the initial and final states, respectively.n is the polytropic index, which can be determined from the given efficiency (η) as follows:

\(η = (1 - 1/r^n) × 100n\)

= ln(1/1 - η/100) / ln(r) = ln(1/1 - 0.89) / ln(15) = 1.303

The specific volume of air at 100 kPa and 27°C can be determined using the ideal gas law as follows:

\(P1V1 = mRT1V1\)

= mRT1 / P1

= 1 × 0.287 × (273 + 27) / 100

= 0.0791 m^3/kg

The specific volume of air at the final pressure of 1500 kPa can be determined as follows:

\(P1V1^n = P2V2^nV2\)

= V1(P1/P2)^(1/n)V2

= 0.0791(100/1500)^(1/1.303)V2

= 0.0227 m^3/kg

The final temperature (T2) can be determined using the ideal gas law as follows:

\(P2V2 = mRT2T2\)

= P2V2 / mR

= 1500 × 0.0227 / (1 × 0.287)

The actual final temperature of the air is 746.2 K.T-s diagram

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The mass of hydrogen atoms in the compound would be 2 grams.

The carbon atoms in the compound have a mass of 24 grams.

One carbon atom has a mass of 12 grams. Thus, there are two (12 x 2 = 24) carbon atoms in the compound.

This means that there are also two hydrogen atoms in the compound. One hydrogen atom weighs 1 gram. Hence, the mass of the hydrogen atoms in the compound will be 2 grams.

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Answer:

220g of CO2

Explanation:

Step 1:

The balanced equation for the reaction.

2C5H11OH + 15O2 —> 10CO2 + 12H2O

Step 2:

Determination of the number of mole of CO2 produced by burning 1 mole of C5H11OH.

From the balanced equation above,

2 moles of C5H11OH produced 10 moles CO2.

Therefore, 1 mole of C5H11OH will produce = (1 x 10)/2 = 5 moles of CO2.

Therefore, 5 moles of CO2 is produced from the reaction.

Step 3:

Conversion of 5 moles of CO2 to grams.

Molar mass of CO2 = 12 + (2x16) = 44g/mol

Number of mole of CO2 = 5 moles

Mass of CO2 =...?

Mass = mole x molar mass

Mass of CO2 = 5 x 44

Mass of CO2 = 220g.

Therefore, 220g of CO2 were obtained from the reaction.

The block location of an element tells the energy sublevel of an element.

The term block location refers to the specific block in which an element is found in the periodic table. There are three blocks in the periodic table which are;

The block location of an element tells the energy sublevel of an element.

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Answer:

A flame test could help by seeing what things it could catch on fire from or the things that could happen with acids etc. I would test the medicine by asking someone who has had it in their life, asking doctors or I would maybe use it myself maybe. (I don’t know about c, sooo sorry)

Answer:

First oil well in the United States, built in 1859 by Edwin L. Drake, Titusville, Pennsylvania.

The mole fraction of methanol (CH₃OH) is 0.0427 or 4.27%.

Mole fraction is a measure of the concentration of one substance in a mixture, expressed as the ratio of the moles of the given substance to the total moles of all the substances in the mixture. Mole fraction is an important concept in chemistry, as it allows us to determine the properties of the mixture, such as its vapor pressure, boiling point, and freezing point.

To calculate the mole fraction of methanol (CH₃OH) in the given solution, we must first calculate the moles of methanol present. This is done by dividing the mass of methanol (14.6 g) by its molecular weight (32.04 g/mol).

moles CH₃OH = 14.6 g / 32.04 g/mol = 0.456 mol

We then calculate the moles of water by dividing the mass of water (184 g) by its molecular weight (18.02 g/mol).

moles H₂O = 184 g / 18.02 g/mol = 10.211 mol

The mole fraction of methanol can then be calculated by dividing the moles of methanol (0.456 mol) by the total moles of the solution (0.456 mol + 10.211 mol = 10.667 mol).

This gives us a mole fraction of:

mole fraction = 0.456 mol / 10.667 mol = 0.0427 or 4.27%.

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Complete the oxonium ion, we need to add one hydrogen atom, one electron pair, and one formal charge. We do this by adding a hydrogen atom to the oxygen atom, adding an electron pair to the oxygen atom, and calculating the formal charge of the oxonium ion.

To complete the oxonium ion, we need to add one hydrogen atom, one electron pair, and one formal charge. The first thing to note is that the oxonium ion is a type of ion that is formed when a water molecule gains a hydrogen ion (H+). The H+ ion is then attached to the oxygen atom in the water molecule, creating a positively charged ion.

Now, to add the hydrogen atom, electron pair, and formal charge, we need to look at the structure of the water molecule. Water is made up of two hydrogen atoms and one oxygen atom. The oxygen atom has two lone pairs of electrons and two covalent bonds with the hydrogen atoms.

To complete the oxonium ion, we need to add a hydrogen atom to the oxygen atom. This will create a third covalent bond between the oxygen and hydrogen atoms. The oxygen atom will now have a full octet of electrons, as it will have two lone pairs of electrons and two covalent bonds with the hydrogen atoms.

Next, we need to add an electron pair to the oxygen atom. This is because the oxygen atom will have a positive charge after gaining the hydrogen atom. A positive charge means that the oxygen atom has lost an electron, and it now needs another electron to balance out the charge. The extra electron will come from another molecule or ion that has a negative charge.

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The comparison of the results obtained from the experimental and the control groups validates the conclusions of the experiment.

The question is incomplete but I will, try to help you the much I can. The term experimental groups refer to the group that recieves the treatment while the control group is the group that did not receieve the treatment.

Hence, the comparison of the results obtained from the experimental and the control groups validates the conclusions of the experiment.

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Answer:

The experimental group consists of quadrats numbered

✔ 1 to 16 or A

.

The control group consists of quadrats numbered

✔ 17 to 32 or B

.

Explanation:

The pH of the solution after dilution is approximately 1.71.

moles of formic acid = concentration x volume

moles of formic acid = 0.1750 mol/L x 0.0200 L

moles of formic acid = 0.00350 mol

Next, we need to determine the final concentration of formic acid in the 45 mL solution:

final concentration = moles of formic acid / total volume of solution

final concentration = 0.00350 mol / 0.0450 L

final concentration = 0.0778 M

Now, we can use the dissociation constant of formic acid (Ka = 1.8 x \(10^{-4\)) to calculate the pH of the solution:

Ka = [H+][HCOO-] / [HCOOH]

[H+] = √(Ka x [HCOOH] / [HCOO-])

[H+] =√(1.8 x \(10^{-4\) x 0.0778 / 0.0000)

[H+] = 0.0193 M

pH = -log[H+]

pH = -log(0.0193)

pH = 1.71

pH is a measure of the acidity or basicity of a solution and is an important concept in chemistry. It stands for "potential of hydrogen" and is defined as the negative logarithm of the concentration of hydrogen ions (H+) in a solution. The pH scale ranges from 0 to 14, with 7 being neutral, values below 7 being acidic and values above 7 being basic or alkaline.

Acids are substances that donate hydrogen ions, increasing the concentration of H+ in a solution, while bases are substances that accept hydrogen ions, decreasing the concentration of H+. A solution with a pH of 7 is considered neutral because it has an equal concentration of H+ and OH- ions. A lower pH value indicates a higher concentration of H+ ions, making the solution more acidic, while a higher pH value indicates a lower concentration of H+ ions, making the solution more basic or alkaline.

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Answer:

Its food for cannibals.

100g of ice will require 33,400 J to melt because the specific heat required to melt ice is 334 J/g. Since water has a specific heat of vaporization of 2230 J/g, evaporating 100g of water will require 223,000 J.

Heat is the result of the movement of kinetic energy from one media or item to another, or from the energy source to either a medium or object. Radiation, conduction, & convection are the three possible mechanisms for this type of energy transmission.

The equation q = mcT, where m is the sample mass, c is the specific heat, and T is the temperature change, can be used to determine how much heat is absorbed or lost by a sample (q).

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Explanation:

molecules of Hydrogen gas to produce 1 molecule of ... 1 mol CO. 1 mol CO. 1 mol CH3OH. 2 mol H2. 1 mol CO. 1 mol CO. 1 mol CH3OH ... How many moles of hydrogen.

is there anything wrong with it

To determine whether the protein is an enzyme, the scientist should primarily measure the rate of the chemical reaction. Option(b)

Enzymes are specialized proteins that act as catalysts, facilitating chemical reactions by lowering the activation energy required for the reaction to occur. By comparing the rate of the chemical reaction with and without the protein, the scientist can determine if the presence of the protein enhances the reaction rate. If the reaction proceeds at a significantly higher rate in the presence of the protein, it suggests that the protein is acting as an enzyme, catalyzing the reaction. Enzymes typically accelerate reaction rates by providing an alternative reaction pathway with a lower activation energy, allowing the reaction to occur more readily. While measuring the amount of protein consumed may provide information about the protein's involvement in the reaction, it does not directly determine whether the protein is an enzyme. Similarly, measuring the amount of products bound to the active site or the temperature change of the reaction can provide additional insights, but they alone are not sufficient to confirm enzymatic activity. The most reliable indicator to ascertain whether the protein is an enzyme is to compare the rate of the chemical reaction in the presence and absence of the protein. Option(b)

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Considering the definition of empirical formula, the empirical formula is C₃H₈.

The empirical formula, which specifies the elements that are present and the minimal proportion in whole numbers that exist between its atoms—that is, the subscripts of chemical formulas are reduced to the most integers—is the simplest statement to represent a chemical compound. as little as feasible.

Percent composition:

C: 81.71 %

H: 18.29%

In a 100 grams sample, you have 81.71 grams of carbon and 18.29 grams of hydrogen H.

C = 6.81 moles

H = 18.29 moles

To express this relationship in the form of simple integers

C: H mole ratio is 3: 8

Finally, the empirical formula is C₃H₈.

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K (s) + ZnCl (aq) ====》 KCl ( aq) + Zn (s)

Answer: How The World Works

Explanation: Our world is made out of atoms, molecules and ions. Their behavior determines the properties of the substances we encounter in our daily lives: their structure, color, smell, and the way they interact with each other.

The significance of polar and non-polar amino acids lies in their interactions within a protein structure. Polar amino acids are typically found on the surface of the protein, where they interact with water molecules and other polar molecules. Non-polar amino acids, on the other hand, are typically found in the interior of the protein, where they interact with other non-polar amino acids through hydrophobic interactions.

Amino acids are the building blocks of proteins, and they can be categorized as either polar or non-polar. Polar amino acids have a hydrophilic (water-loving) nature due to their polarity, while non-polar amino acids have a hydrophobic (water-fearing) nature due to their lack of polarity.

The balance between polar and non-polar amino acids is crucial in determining the overall structure and function of a protein. If there are too many polar amino acids in the interior of a protein, it may become unstable and unfold. Conversely, if there are too many non-polar amino acids on the surface of a protein, it may not be able to interact effectively with other molecules.

Overall, the significance of polar and non-polar amino acids lies in their ability to contribute to the stability and function of proteins. Understanding the properties of these amino acids is important in fields such as biochemistry and drug development.

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Answer:

the answer is c

plz mark me as brainly

Explanation:

The particle with a charge of -1/3 is the down quark. Therefore, the correct answer is option (a) down quark.

The down quark is one of the six known flavors of quarks, which are elementary particles and fundamental constituents of matter.

Quarks are classified into six "flavors":

The down quark is denoted as "d" and is assigned a charge of -1/3. It is one of the two quarks that make up nucleons (protons and neutrons) found in the atomic nucleus. The down quark, along with the up quark, forms the building blocks of ordinary matter. Protons consist of two up quarks and one down quark, while neutrons consist of two down quarks and one up quark.

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Two covalent bonds are formed by oxygen to complete their octet.

An electron exchange that results in the formation of electron pairs between atoms is known as a covalent bond. Bonding pairs or sharing pairs are the names given to these electron pairs. Covalent bonding is the stable equilibrium of the attractive and repulsive forces between atoms when they share electrons.

In chemistry, an octet is an arrangement of eight electrons in the outer electron shell of a noble gas atom. The relative inertness of noble gases and the chemical behaviour of several other elements are attributed to this structure.

The chemical element oxygen has an atomic number of 8. (it has eight protons in its nucleus). At normal temperatures and pressures, oxygen transforms into the chemical compound (O2) of two atoms, which is a colourless gas.

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The pH of the salt depends on its anion and cation. The following is the breakdown of each salt:A. FeCl3Solution: acidic.

Explanation: Iron (III) chloride hydrolyzes in water to produce hydrogen chloride and iron (III) hydroxide. Hydrogen chloride is an acid, therefore a solution of iron (III) chloride is acidic.B. NaFSolution: pH neutralExplanation: Sodium fluoride is the salt that is formed from a weak base and a strong acid. Since the base is weak and the acid is strong, the salt is expected to have a basic anion and an acidic cation, making it pH neutral. C. CaBr2Solution: pH neutral.

Calcium bromide is an example of a salt that is formed from a strong acid and a strong base. Since both ions are neutral, the solution is pH neutral.D. NH4BrSolution: acidicExplanation: Ammonium bromide hydrolyzes in water to form hydrobromic acid and ammonium hydroxide. Since hydrobromic acid is an acid, a solution of ammonium bromide is acidic.E. C6H5NH3NO2Solution: basicExplanation: The anion of phenylammonium nitrate is nitrate ion, which is a weak base. Phenylammonium cation is acidic, but since nitrate is a weak base, the solution is basic. Therefore, the solution of C6H5NH3NO2 is basic.

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