what is the normal boiling point of naturally occurring limonene? what is the approximate boiling point of limonene during steam distillation?

Answer:

True hope this helps

Explanation:

Answer:

612813415 I my UID and I'm on the NA server. My name is Lee.

Explanation:

I'm AR55 so I can help you with bosses or anything else you need! :)

The mass of oxygen gas produced, given that 15.8 g of potassium permanganate is heated until no more oxygen gas is given off is 1.6 g

From the question given, the following data were obtained:

The mass of oxygen gas produced from the reaction can be obtained as follow:

Mass of potassium permanganate = Mass of remaining substance + mass of oxygen

Inputting the given parameters, we have:

15.8 = 14.2 + mass of oxygen

Collect like terms,

Mass of oxygen = 15.8 - 14.2

= 1.6 g

Thus, we can conclude that the mass of oxygen gas produced from the reaction is 1.6 g

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The command that allows moving a file from one location to another is the "mv command".

The mv command renames or transfers files and folders from one directory to another. A file or directory keeps its base file name when moved to a new directory. All links to other files are preserved when you transfer a file, with the exception of when you move it to a different file system. A directory and its contents are added beneath the existing directory when you transfer a directory into it.

The TargetDirectory option of the mv command allows you to provide a new file name or a new directory path name when renaming a file or directory.

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53 mg of lead can be dissolved per litre of water. Option e is correct.

The solubility product constant, Ksp, of PbSO4 is given by the expression below:

Ksp= [Pb2+][SO42-]

If S is the solubility of PbSO4 in Molarity, then the quantity of lead ions that can dissolve from the salt into the solution is given as

S × MW (where MW is the molecular weight of PbSO4)

MW of PbSO4 = (1 x 207.2) + (1 x 32.06)+ (15.99 x 4) = 303.22 g/mol

S =√Ksp = √1.6 × 10-8= 1.26 × 10-4

So the number of milligrams of lead (II) that can dissolve per liter of water is

1.26 × 10^-4  M/L  × 303.22 g/mol = 0.352 g/L= 35.2 mg/L≈ 35 mg/L

The correct answer is (e) 53 mg/L.

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1) Sodium Hydroxide (NaOH) 2) Sodium Chloride (NaCl)

1. An example of a solution or reagent for which precision is very important is the preparation of a standard solution for titration, such as a sodium hydroxide (NaOH) solution.  Precision is crucial in this case because the accuracy of the titration result depends on the exact concentration of the standard solution. If the concentration is not precise, it can lead to errors in the calculated values and impact the quality of the experimental results.

2. An example of a solution or reagent for which precision is less critical is a sodium chloride (NaCl) solution used for rinsing laboratory glassware. In this case, the exact concentration of the solution is not as important because its primary purpose is to remove contaminants or residual chemicals from the glassware. As long as the solution is able to effectively clean the glassware, minor variations in concentration will not significantly impact the outcome of subsequent experiments using that glassware.

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The delta H for the dissolution of MgSO₄ is 6.475 kJ/mol.

To calculate delta H (\(Δ_{H}\)) for the dissolution of MgSO₄, we can use the formula;

\(Δ_{H}\) = q / n

where q is the heat absorbed by the solution, and n is the number of moles of MgSO₄ dissolved.

First, we need to calculate the number of moles of MgSO₄ dissolved. We can use the formula;

n = m / M

where m is the mass of MgSO₄ and M is the molar mass of MgSO₄.

The molar mass of MgSO₄ is;

M(MgSO₄) = 24.31 g/mol (Mg) + 32.06 g/mol (S) + 4 x 16.00 g/mol (O)

M(MgSO₄) = 120.37 g/mol

Therefore, the number of moles of MgSO4 dissolved is;

n = 5.21 g / 120.37 g/mol

n = 0.0433 mol

Next, we need to calculate the heat absorbed by the solution (q). We can use the formula;

q = mC\(Δ_{T}\)

where m is the mass of the solution, C is the specific heat capacity of water, and \(Δ_{T}\) is the change in temperature of the solution.

The mass of the solution is 100 g/mL x 0.1 L

= 10 g

The specific heat capacity of water is given as 4.184 J/g x °C

\(Δ_{T}\) = 6.7 °C

Therefore, the heat absorbed by the solution is;

q = 10 g x 4.184 J/g x °C x 6.7 °C

q = 280.47 J

Finally, we can calculate delta H for the dissolution of MgSO4;

\(Δ_{H}\) = q / n

\(Δ_{H}\) = 280.47 J / 0.0433 mol

\(Δ_{H}\) = 6475 J/mol

Converting to kJ/mol;

\(Δ_{H}\) = 6.475 kJ/mol

Therefore, the delta H is 6.475 kJ/mol.

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Answer:the parts of the body which is nearest to  the ground ie thier back will show discoloration

Explanation:

If the body remains at a position for long hours, the parts of the body which is nearest to  the ground can develop a skin discoloration as a result of pooling of blood in the tissues and this is called livor mortis, which tends to be permanent from 8Hours upwards.

Answer:

The sun

Explanation:

The sun is the center of the solar system and all the planets orbit around it (moons orbit around respective planets which orbit around the sun)

Answer:

The Sun.

Explanation:

☀️
The Sun is like the “power house” of the solar system, we rely on it, and everything orbits around it.

Answer: An indicator is itself a weak acid or weak base but a special one. The colour of the acid form is different from the colour of the base form. So you can tell when the pH of your solution has changed from being one to the other by seeing the colour change from one to the other. The particular pH where that colour change occurs depends on the particular indicator you use. The most common indicator in UG Chem Labs is probably the one called Phenolphthalein when it has its proton attached, it is colourless like water but when the proton comes off it is pink. This change happens around pH=8–9. any solution with pH below that (acidic) will make the phenolphthalein hold onto its proton and be colourless. Any pH above that will cause it to lose its proton and become pink.

Explanation:

Answer:

A:temperature

Explanation:

The temperature cannot be determined by looking at the spectra of the star due to lack of the equipment for its measurement. On the other-hand, the remaining statements like the distance from earth, movement towards or away from earth can be determined.

Solubility refers to the ability of substances to dissolve in a solvent. Of the gases listed here, that which would most likely dissolve in water is;

Carbon dioxide is a gas that has a very high solubility in water. When bubbled through water, 99% of the gas dissolves while 1% of the gas comes off as carbonic acid.

The solubility of carbon dioxide increases with an increase in pressure and decreases with an increase in temperature.

Therefore, option A is correct.

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The pulse duration of periodic pulse train with a duty cycle of 15% and a period of 115 nanoseconds is 17.25 nanoseconds.

Duty cycle  = 15% or 0.15

Time period = 115 nanoseconds

The ratio of the amount of time the signal spends in the "on" state to its overall duration is known as the duty cycle. The signal is on for 15% of the entire period when the duty cycle is given as 15% in this instance. Duty cycles are a term used to represent the percentage of time that an electrical signal is active in a device, such as the power switch in a switching power supply, or when an organism, like a neuron, fires an action potential.

Calculating the duty cycle and the period of the pulse train -

Pulse duration = Duty cycle x Period

= 0.15 x 115

= 17.25

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Protein is the main nutrient that helps in the repair of tissue. Protein provides the amino acids that the body needs to build and repair cells and tissues. Other nutrients that aid in tissue repair include carbohydrates, fats, vitamins, and minerals.

Among all the substances used, water possesses the strongest intermolecular forces (hydrogen bonds).

Although hydrogen bonds exist in glycerine and methylated spirits as well, they are a little weaker than in water. Due to its nonpolar nature and minimal London dispersion forces, CH4 (methane) would exhibit the smallest intermolecular forces of attraction.

In particular, a subgroup of dipole-dipole interactions known as hydrogen bonding, which takes place when a hydrogen is in close proximity to (attached to) a very electronegative element, is the strongest intermolecular force (namely oxygen, nitrogen, or fluorine).

The relative strength of a material's intermolecular links can be determined by measuring its melting and boiling temperatures; the stronger the intermolecular bonds, the higher the melting temperature of the substance.

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if 25.4 g of LiOH reacts with 64.8 g of CO2, 9.54 g of H2O will be produced.

We can start by using the coefficients in the balanced equation to convert the number of moles of one substance to the number of moles of another substance.

Convert the masses of LiOH and CO2 to moles:

Determine the limiting reactant:

Since the ratio of the coefficients in the balanced equation is 2:1 for LiOH to CO2, we can see that the limiting reactant is LiOH. This means that we will run out of LiOH before CO2, so we will use the moles of LiOH to calculate the amount of H2O produced.

Calculate the number of moles of H2O produced using the balanced equation:

From the balanced equation, for every 2 moles of LiOH that react, 1 mole of H2O is produced. So, the number of moles of H2O produced is:

1.06 mol LiOH / 2 mol LiOH/mol H2O = 0.53 mol H2O

Convert the number of moles of H2O to mass:

Mass of H2O = 0.53 mol * (18.0 g/mol) = 9.54 g

So, if 25.4 g of LiOH reacts with 64.8 g of CO2, 9.54 g of H2O will be produced.

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The silver coating on the spoon is produced. When electrolyzing a spoon made from iron with silver, the anode, cathode, and electrolyte that can be used are as follows:

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If you were to cut a metal element over and over a given, to the point that is barely visible would still be considered as an element. Yes, it is merely being chopped; nothing about its atomic composition is changed.

As a result of these stray neutrons splitting new atoms, more energy and neutrons are released, setting off a chain reaction. Only lasers, magnetic fields, and chemical reactions are capable of "breaking" objects apart at the atomic level.

Precision, ease of use, and clarity define the metal element. It also stands for joy, righteousness, and integrity. You may include the metal element into your home's design using the following items to enhance these aspects in your life: Colors include white, grey, and metallic hues.

The tiniest component of ordinary matter, an atomic , makes up a chemical element. Neutral or ionised atoms make up every solid, liquid, gas, and plasma. Atoms typically have a diameter of 100 picometers or less.

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Molarity is the number of moles of solute per liter of solution, while ppm is the mass of solute per million parts of the solution.

Fixation is a proportion of how much solute disintegrated in a dissolvable. Two familiar approaches to communicating focus are molarity and parts per million (ppm).

Molarity is characterized as the quantity of moles of solute broke up in one liter of arrangement. It is addressed by the image M and is determined as follows:

M = moles of solute/volume of arrangement (in liters)

For instance, on the off chance that 0.5 moles of NaCl is disintegrated in 1.0 L of water, the molarity of the arrangement would be:

M = 0.5 mol/1.0 L = 0.5 M

Parts per million (ppm) is a unit of fixation that communicates the proportion of the mass of solute to the mass of the arrangement, duplicated by 1,000,000. It is addressed by the image ppm and is determined as follows:

ppm = (mass of solute/mass of arrangement) x \(10^6\)

For instance, on the off chance that 0.1 g of lead is disintegrated in 1.0 L of water, the ppm of lead in the arrangement would be:

ppm = (0.1 g/1000 g) x \(10^6\) = 100 ppm

Molarity and ppm are both valuable approaches to communicating focus and are utilized in different fields, including science, science, and natural science. It is vital to comprehend how to ascertain and switch between these units of focus over completely to precisely plan and examine arrangements in the research facility.

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The complete question is:

SOLUTION CONCENTRATION WORKSHEET 1) If you dissolve 8.56 grams of sodium chloride in 25.09 grams of water, calculate the percent (m/m), of sodium chloride. [25.4%) 2) Calculate the molarity of a solution that contains 18.9 grams of sodium hydroxide in 3.67 L of solution. [O. 13mol/L) 3) How many moles of potassium hydroxide are in 4.82 mL of a 0.050 M solution of potassium hydroxide? [0.000241 mol) 4) If 35 g of copper (II) chloride is placed in 140 mL of water, what will be the percent (m/v) of the solution? (25%) 5) The (m/m)% of silver in sterling silver alloys is 92.5%. What mass of pure silver is found in a ring that has a mass of 6.45 g? [5.97g] 6) Health Canada's guideline for the maximum mercury content in commercial fish is 0.5 ppm. When a 1.6 kg salmon was tested, it was found to contain 0.6 mg of mercury. Would this salmon be safe to eat? [0.4ppm;salmon is safe to eat] 7) A saline solution contains 0.90 g of sodium chloride, dissolved in 100 mL of solution. What is the molar concentration of the solution? [0.15 mol/L) 8) Calculate the mass of solute needed to make 250 mL of a 0.50 M solution of NH,CI [6.79] 8) Calculate the mass of solute needed to make 250 mL of a 0.50 M solution of NH,CI [6.79] 9) A solution is made by mixing 50.0mL of ethanol with 50.0mL of water. Determine the percent by mass (m/m) of ethanol in this solution. The densities of ethanol and water are 0.789g/mL and 1.00g/mL respectively [44.1% m/m ethanol] 10) Calculate the molarity of a solution containing 0.750mol of HCI in 335mL of solution. [2.24 mol HCI/L) 11) Calculate the molarity of a solution that contains 13.5g of sodium sulphate in 850mL of solution. [O .112M Na So.] 12) A laboratory experiment calls for 0.300M KOH solution. Calculate the number of moles of KOH that would be in 150mL of the solution [0.0450 mol KOH] 13) Calculate the number of grams of solute in 150mL of 0.30M NaOH. [1.8gNaOH) 14) How many liters of 0.10M aluminum chloride will contain 0.45 mol of chloride ion? [1.5L] 15) If you had a 1.25M solution of hydrochloric acid, how much of it would you have to use to make 1.5L of a 0.25M solution? [300mL].

Answer:

See below ~

Explanation:

1. C. solid

2. B. tone quality

3. C. pitch

4. D. capable of producing its own light

5. D. stars

Answer:

1. C. solids

2. B. tone quality

3. A. pitch

4. D. capable of producing its own light

5. D. stars

The mass of the solid is measured using a balance on and a filter paper.

Measurement is very important in the chemistry laboratory. It is often important to measure the mass of a solid which could be used to prepare a solution.

In such cases, a filter paper is placed on the balance and the mass of the paper is measured. The solid is now placed on the paper until the value reads the sum of the masses of the paper and the solid to be measured.

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Esters are the moderate deactivating group having substitution at meta position.

An ester is defined as a compound derived from an acid in which the hydrogen atom of at least one acidic hydroxyl group of that acid is replaced by an organyl group. It is derived from oxygen replaced by other chalcogens belong to the ester category as well Esters function as moderate deactivating groups and will direct substitution at meta positions. The first nitro group will be directed to the position meta to the ester group. This group is a severe deactivating group and will also direct substitution to the meta positions. The second nitro group will be directed to the position meta to both the ester group and the nitro group.

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we can conclude that the scale is precise but not accurate. The correct option is d.This means that the scale consistently gives the same measurements, but they are not accurate or close to the true value.

To understand whether the scale is precise, accurate, both, or neither, we need to define these terms. Precision refers to the consistency or reproducibility of measurements, while accuracy refers to how close the measured value is to the true or accepted value. In this case, the true value is 1.000g, and the measurements captured are 0.843 g, 0.842 g, and 0.843 g.Looking at these measurements, we can see that they are not accurate since none of them are close to 1.000g. However, we can also see that they are precise since they are all very similar to each other, with a difference of only 0.001g between the highest and lowest measurement.
Therefore, To improve accuracy, the scale may need to be recalibrated or replaced.

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complete question: Testing precision and accuracy of scale, weigh block exactly 1.000g. these are measurements captured:

a. 0.843 g

b. 0.842 g

c. 0.843 g

d. Is the scale precise, accurate, both, or neither?

Answer:

Under the same conditions and assuming ideal gas behavior, both gases should have the same number of moles. This means the higher the molar mass the denser the gas. Water vapor would be less dense than N2 under the same conditions.

Explanation:

The critical insulation thickness of a sphere, thermal conductivity of insulation is \(\rm K_c\) and the surface heat transfer coefficient of insulated sphere \(\rm h\), is δ\(\rm _{crit} = (2k_c / h) \times (D_i / D_o)\).

The critical insulation thickness of a sphere is the minimum insulation thickness required to prevent heat loss from the sphere to the surroundings.

The expression for the critical insulation thickness is given by:

δ\(\rm _{crit} = (2k_c / h) \times (D_i / D_o)\)

where:

- δ\(\rm _{crit}\) is the critical insulation thickness.

-\(\rm k_c\) is the thermal conductivity of the insulation material.

- h is the surface heat transfer coefficient of the insulated sphere.

- \(\rm D_i\) is the inside diameter of the sphere.

- \(\rm D_o\) is the outside diameter of the sphere.

This expression assumes that the heat transfer from the sphere to the surroundings is primarily by convection, and that the insulation is homogeneous and isotropic. The critical insulation thickness can be used to determine the optimal insulation thickness for a given application, to minimize heat loss and improve energy efficiency.

Therefore,  δ\(\rm _{crit} = (2k_c / h) \times (D_i / D_o)\) is the expression for the critical insulation thickness of sphere.

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Answer: During succession, new species move into an area and colonize it.

Explanation: Ecological succession refers to the process of change in the composition and structure of an ecosystem over time. It occurs due to the interactions between the biotic (living) and abiotic (non-living) components of an environment. As succession progresses, new species gradually establish and thrive in the area, leading to a change in the species composition. This process can occur over a long period of time, ranging from decades to centuries, depending on various factors such as environmental conditions and the specific type of succession.

The Lewis Structure for the cyanide ion is shown. The formal charge on the C atom is equal to 0 and the formal charge on the N atom is equal to -1.

In order to determine the formal charges on the C and N atoms in the cyanide ion, we must first draw its Lewis structure.
Draw the Lewis structure for the cyanide ion (CN-).
C is triple bonded to N, with an additional lone pair of electrons on N. Since it is an ion, there is a negative charge on the molecule.
Calculate the formal charge on the C atom.
The formula for formal charge is: (number of valence electrons) - (number of lone pair electrons) - 0.5*(number of bonding electrons). Carbon has 4 valence electrons, no lone pair electrons, and 6 bonding electrons (from the triple bond). Therefore, the formal charge on the C atom is 4 - 0 - 0.5*6 = 0.
Calculate the formal charge on the N atom.
Nitrogen has 5 valence electrons, 2 lone pair electrons, and 6 bonding electrons (from the triple bond). The formal charge on the N atom is 5 - 2 - 0.5*6 = -1.

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