Which statement correctly describes the relationship between reactant and yield?

A. The actual yield is calculated from the amount of the excess reactant present
B. The actual yield is calculated from the amount of the limiting reactant present.
C. The theoretical yield is calculated from the amount of the excess reactant present.
D. The theoretical yield is calculated from the amount of the limiting reactant present.

Answers

Answer 1

Answer:

The theoretical yield is calculated from the amount of the limiting reactant present.

Explanation:

The limiting reactant is one which is present in lesser amount than the other reactant (based on molar ratio requirement)

For example in formation of water we need one mole of hydrogen gas and half moles of oxygen gas. Now we have one mole of hydrogen gas and one mole of oxygen gas then the limiting reagent is hydrogen gas.

theoretical yield is the expected yield of a reaction calculated based on the moles or amount of limiting reagent present as the limiting reagent is going to be completely consumed during the reaction.

Answer 2

Answer : The correct option is, (D) The theoretical yield is calculated from the amount of the limiting reactant present.

Explanation :

Excess reagent : It is defined as the reactants not completely used up in the reaction.

Limiting reagent : It is defined as the reactants completely used up in the reaction.

Theoretical yield : It is calculated from the amount of the limiting reagent present in the reaction.

Actual yield : It is experimentally determined.

Hence, the correct option is, (D) The theoretical yield is calculated from the amount of the limiting reactant present.


Related Questions

In which step of scientific method is information obtained through the senses?

Answers

i think its observation 

Calculate the formula mass for the compound tin(iv) sulfate. express your answer using five significant figures.

Answers

The formula mass of tin(iv) sulfate is 310.83g/mol. Details about formula mass can be found below.

How to calculate formula mass?

The formula mass of a compound can be calculated by summing the atomic masses of the element that make it up.

According to this question, tin(iv) sulfate is the given compound. The chemical formula of tin (IV) sulfate is Sn(SO4)2.

Atomic mass of Sn = 118.71g/molAtomic mass of S = 32g/molAtomic mass of O = 16g/mol

118.71 + [32 + 16(4)]2

= 310.83g/mol

Therefore, the formula mass of tin(iv) sulfate is 310.83g/mol

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The formula mass of tin(IV) sulfate (Sn(SO₄)₂) is approximately 310.83 g/mol, expressed with five significant figures .

To calculate the formula mass of tin(IV) sulfate, sum the atomic masses of its constituent atoms: tin, sulfur, and oxygen.

The total formula mass is 310.83 g/mol. This calculation includes atomic masses for one tin atom, two sulfur atoms, and eight oxygen atoms.To calculate the formula mass of tin(IV) sulfate (Sn(SO₄)₂), we need to sum the atomic masses of all the atoms in its chemical formula.

Using the atomic masses rounded to two decimal places:

Tin (Sn): 118.71 g/molSulfur (S): 32.07 g/molOxygen (O): 16.00 g/mol

The chemical formula Sn(SO₄)₂ indicates one tin atom, two sulfur atoms, and eight oxygen atoms. The computation is as follows:

Formula Mass Calculation:

Tin: 1 x 118.71 g/mol = 118.71 g/molSulfur: 2 x 32.07 g/mol = 64.14 g/molOxygen: 8 x 16.00 g/mol = 128.00 g/mol

Total Formula Mass:

118.71 g/mol + 64.14 g/mol + 128.00 g/mol = 310.83 g/mol

Therefore, the formula mass for tin(IV) sulfate is 310.83 g/mol.

Select all of the answers that apply. Without its atmosphere, Earth would be _____. warmer bombarded by meteorites similar to Mars relatively lifeless

Answers

Without its atmosphere, Earth would be bombarded by meteorites, similar to mars, relatively lifeless. Without the atmosphere objects can just enter the atmosphere and cause serious harm to us, but with the atmosphere it basically reduces damage and shrinks it to size. Without the atmosphere earth would be like mars since it doesn't have a atmosphere. Without the atmosphere earth would be relatively lifeless since without air, us humans cant breathe so we will not survive.

The answer is B, C and D

What elements are formed by stars having a mass greater than eight suns?

Answers

Final answer:

Stars having a mass greater than eight suns produce elements as heavy as iron through nucleosynthesis. They also eject matter into space in their dying stage, making way for new stars. Elements heavier than iron are synthesized during supernova explosions when these stars exhaust their nuclear fuel.

Explanation:

Stars having a mass greater than eight suns are capable of forming elements as heavy as iron through a process known as nucleosynthesis. In these stars, nuclear reactions involving carbon, oxygen, and heavier elements can build up nuclei up to that of iron. Eventually, these stars exhaust their energy supplies and in the process of dying, some matter, enriched in heavy elements, is ejected into interstellar space. This matter forms the foundation for new stars, with each succeeding generation containing a larger proportion of elements heavier than hydrogen and helium. Specifically, such massive stars can ignite further fusion reactions, transforming carbon into oxygen, neon, magnesium, and silicon until iron is ultimately formed. However, elements heavier than iron are synthesized during spectacular explosions called supernovas, which occur when these stars finally exhaust their nuclear fuel.

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Final answer:

Elements heavier than iron are formed through nucleosynthesis in stars with masses greater than 8 solar masses.

Explanation:

In stars with masses greater than about 8 solar masses, elements heavier than iron can be formed through nucleosynthesis, a process in which nuclear reactions build up nuclei. The outer layers of these massive stars compress the carbon-oxygen core, leading to the fusion of carbon nuclei and the production of heavier elements like silicon and iron.

Elements formed by stars include hydrogen and helium, which were produced during stellar nucleosynthesis. Heavier elements, such as carbon, oxygen, and beyond, are formed through fusion processes within stars during their lifecycle. However, iron is the endpoint of this process, as fusion of iron atoms requires energy rather than releasing it.

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Which compound has the highest carbon-carbon bond strength? which compound has the highest carbon-carbon bond strength? hcch ch2ch2 ch3ch3 all bond strengths are the same?

Answers

HCCH with a bond energy of 813 kJ/mole Let's look at the three compounds HCCH = Acetylene with a triple carbon bond. CH2CH2 = Ethylene with a double carbon bond. CH3CH3 = Ethane with a single carbon bond. The strongest overall bond is the triple bond for Acetylene with a bond energy of about 813 kJ/mole as compared to the 598 kJ/mole for the double bond and the 346 kJ/mole for the single bond.
Answer: HCCH (ACETYLENE) has the highest carbon-carbon bond strength. In this structure the carbons are linear with sp hybridization. Since acetylene contains a triple bond which has stronger bond strength and shorter bond length, it has the highest carbon-carbon bond strength.

The formula for aluminum fluoride is electrically neutral which of the following is the correct
formula for this compound which consists of only aluminum and fluoride ions and aluminum ion has three positive charges

Answers

Answer:

The answer is AIF3

Explanation:

I just took quiz and got 100%

have a good day :)

The chemical  formula of aluminium fluoride is AlF₃ as it has aluminium and fluoride ions with +3  and -1 charges respectively.

What is chemical formula?

Chemical  formula is a way of representing the number of atoms present in a compound or molecule.It is written with the help of symbols  of elements. It also makes use of brackets and subscripts.

Subscripts are used to denote number of atoms of each element and brackets indicate presence of group of atoms. Chemical formula does not contain words. Chemical formula in the simplest form  is called empirical formula.

It is not the same as structural formula and does not have any information regarding structure.It does not provide any information regarding structure of molecule as obtained in structural formula.

There are four types of chemical formula:

1)empirical formula

2) structural formula

3)condensed formula

4)molecular formula

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What are multiple things combined to produce a product that is different from the parts that are used to make it

Answers

Soap acid + base
Sulphuric acid + soda + tallow
Railway grease + glycerine
You can use any base and acid to make soap. It can be used in many applications. It can be used to clean, as well as, it can be used as a lubricant. In the olden days when windows where made of wood people would used soap in the side sills to help the windows to slide easier, zippers that function badly use soap for lubricant to aid in function. To cleanse the pores of the skin salt and tallow will help improve skin softness, as well as make the pores smaller.

How many electrons can occupy the s orbitals at each energy level?

Answers

The atomic orbital is describes using the principle quantum number followed by a letter (s, p, d or f) that describe the sublevel.

For sublevel, it has the shape of a spherical electron cloud surrounding the nucleus and it can hold up to two electrons.

Therefore, the answer to your question is 2 electrons.

What is the standard unit used to measure mass?

cubic meters
gram
liter
meter

Answers

the answer to what standard unit of measure to mass is grams.

Answer:

Gram (g)

Explanation:

technically, it is the kilogram (kg), which is made of grams.

Zinc has a mass of 4.50g calculate the volume

Answers

The volume of given amount of zinc will be 0.631 cm³.

What is the relation between the mass and density of a solid body?

The relation between the mass and density of any solid is given by -

M = dV

where -

[M] is the mass

[d] is density

[V] is volume

Given is Zinc that has a mass of 4.50 g.

We can write -

Mass of zinc = [M] = 4.5 g

Density of zinc = [d] = 7.13 g/cm³

Therefore, the volume of given amount of zinc will be -

V = M/d

V = 4.5/7.13

V = 0.631 cm³

Therefore, the volume of given amount of zinc will be 0.631 cm³

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Final answer:

To find the volume of the zinc sample weighing 4.50g, divide the mass by the density of zinc (7 g/cm³), resulting in a volume of approximately 0.643 cm³.

Explanation:

To calculate the volume of a sample of zinc with a mass of 4.50g, we need to know the density of zinc. From the provided examples, we can determine that the density of zinc is effectively 7 g/cm³ (since if 1 cm³ of zinc has a mass of about 7 grams).

Using the formula density = mass/volume, we can find the volume by rearranging the formula to volume = mass/density. Plugging in the numbers, we get:

volume = 4.50 g / 7 g/cm³ = 0.643 cm³ (approximately)

Therefore, the volume of the 4.50g sample of zinc is approximately 0.643 cm³.

It's important to think about your result and ensure it's reasonable. Given the mass and density, a volume of 0.643 cm³ for zinc is consistent with its known physical properties.

The eu(iii) standards added to the groundwater sample contained 0.168 ng/ml (ppb) of eu(iii). calculate the concentration of eu(iii) in the groundwater sample.

Answers

The standard addition equation is as followsI_(S+X) (V/V_O )=I_X+I_X/[X]_i  [S]_4 (V_S/V_0 ) Here, [X]_i is the initial concentration of analyte, [S]_i is the initial concentration of standard, I_X is signal for analyte, I_(S+X) is signal for standard and analyte, V_0 is the initial volume, V_S is the added standard volume, and V is the total volume.Added volume of standard V_S is-23.3 mL. Initial volume of the sample V_0  is 10.00 mL. Initial concentration of standard ([S]_i) is 0.156 ng/mL.[X]_i= -[S]_i (V_S/V_0 )〖[X]〗_(i )= -(0.156 ng/mL)((-23.3 mL)/(10.00 mL))=0.363 ng/mL
Concentration of U(III) in ground sample is 0.363 ng/mL

Final answer:

Without specific data on Eu(III) measurements and sample treatment, we cannot calculate its concentration in the groundwater sample. Typically, standard addition or a calibration curve would be used. For other examples, such as mercury in wastewater, ppm and ppb are calculated using the solute's weight and the sample's weight.

Explanation:

To determine the concentration of Eu(III) in the groundwater sample, we would typically use a procedure similar to the one used for analyzing the concentration of other ions like nitrate (NO3). We might use techniques such as standard addition or a calibration curve using an ISE (ion-selective electrode), CZE (capillary zone electrophoresis), or another analytical method. However, without additional information such as the volume of groundwater sample, potential measurements, standard concentrations, and dilution factors, it is not possible to calculate the concentration of Eu(III) in the sample with the data provided.

One common approach is demonstrated in the NO3 example provided: In a one-point standard addition method, a known amount of a standard solution is added to the sample, and the change in an analytical signal (e.g., potential for an ISE) is measured. This is used to calculate the concentration of the target analyte in the original sample. Without similar data points for the Eu(III) analysis, the concentration in the groundwater sample cannot be determined from the information provided.

In the case of the example where mercury concentration is to be expressed in ppm and ppb, it is a straightforward calculation based on the weight of mercury and the weight of the sample. Parts per million (ppm) and parts per billion (ppb) are units of concentration that represent the ratio of solute to solution. To convert milligrams to grams and then compute ppm and ppb, we need to use the provided weights.

For instance, to calculate the concentration in ppm and ppb, given a 50.0-g industrial wastewater sample contains 0.48 mg of mercury:

Convert milligrams of mercury to grams: 0.48 mg = 0.48 × 10−3 gCalculate ppm (parts per million): (0.48 × 10−3 g / 50.0 g) × 106 = 9.6 ppmCalculate ppb (parts per billion): (0.48 × 10−3 g / 50.0 g) × 109 = 9600 ppb

what is one way to describe elements?

A. building blocks
B. they break down easily
C. smallest particles of material
D. they are the most expensive materials on earth

Answers

The Answer is A Building Blocks

The primary function of molecular membranes is the transport of ions and molecules into and out of cells—transport is directional and selective. the movement of molecules from areas of high concentration to areas of low concentration to gain energy is best described as

Answers

The correct answer is passive transport.
When molecules are moved from areas of high concentration to areas of low concentration in order to gain energy, that is considered to be passive transport. If the opposite happens, then that would be active transport.

Isotopes have the same ____________ but have a new atomic mass because they _________________. *

Number of electrons; have more or less neutrons

Number of protons; have more or less neutrons

Number of protons; have more or less electrons

Number of electrons; have more or less protons

Answers

Answer:

Isotopes have the same number of protons but have a new atomic mass because they have more or less neutrons.

Hope this helps!

What is the difference between the 3p sublevel and the 4p sublevel?

On the periodic table

Answers

The p sublevels are named 2p, 3p, and 4p since the p sublevel appears only starting the 2nd level. By the Aufbau principle, 3p will be filled first before 4p. This is because of the energy present on the level. 

Each of the p sublevel has 3 orbitals, allowing them to contain 6 electrons as each orbital may hold two. 

Answer:

Here look

Explanation:

Iodine Trichloride formula

Answers

I2Cl6- both 2 and 6 are subscripts which means they are like exponents but below the chemical symbol instead of above like an exponent or superscript

Answer: ICI3

Explanation: A Pex... Hope This Helps

Explain how an increase in the temperature causes an increase in the solubility of most solids and liquids

Answers

Increasing temperature can cause the molecules in liquid to spread further apart allowing the mixture to be more soluble. 

A reaction which forms a solid product is an example of a(n)________. oxidation-reduction reaction combustion reaction precipitation reaction gas evolution reaction none of these

Answers

A reaction which forms a solid product is termed a PRECIPITATION REACTION.
The solid literally "precipitates" out of the liquid, meaning it comes out of the solution into a solid.

Consider the ionic compound magnesium acetate. How many electrons does the magnesium ion have

Answers

a magnesium ion has the same electronic power as a neon atom (not sure if this is what you're looking for but here you go)

Final answer:

A magnesium ion (Mg2+) has 10 electrons after losing 2 valence electrons to achieve a stable electron configuration, resembling the noble gas neon.

Explanation:

The question asks about the number of electrons in a magnesium ion found in magnesium acetate. In the process of forming an ion, a magnesium atom, which normally has 12 electrons, loses two electrons to achieve a stable electronic arrangement, resembling that of the noble gas neon. This loss of electrons results in the formation of a magnesium ion with a 2+ charge, denoted as Mg2+. Therefore, a magnesium ion possesses 10 electrons.

Magnesium's behavior exemplifies a typical property of metals in which they lose electrons to form positive ions or cations. This is consistent across various magnesium compounds, whether it forms magnesium acetate with acetate anions or magnesium oxide with oxide anions, illustrating the metallic character of magnesium in forming cations through the loss of its valence electrons.

Explain in terms of particle behavior why smoke particles cause the detector alarm to sound

Answers

Smoke detectors are of many types but they rely on the principle of diffusion of smoke. Diffusion is the movement of particles from a region of high concentration to a region of lower concentration. Smoke particles move in what is known as Brownian motion. 
Final answer:

Smoke particles disrupt the ion flow created by americium-241 in smoke detectors, causing a drop in electric current and triggering the alarm. This mechanism helps in early fire detection and increases safety.

Explanation:

Inside a smoke detector, a tiny amount of the radioactive element americium-241 emits α-particles, which ionize the air and create a small electric current between two metal plates. This continuous ionization forms the basis for detecting smoke. When smoke particles from a fire enter the detector, they impede the flow of ions, thus reducing the conductivity of the air and causing a significant drop in the current. This decrease in current level is detected by the circuit, which then triggers the alarm to alert of the potential danger of a fire.

Regular battery replacement is recommended as the continuous drain of current by the ionization process depletes the battery over time, irrespective of alarm activation. The americium-241 is sealed in plastic within the detector, making it harmless unless tampered with.

Why isn't the atomic mass of most of the elements on the periodic table a whole number?

Answers

because scientists want to be as precise as they could be so they used a very accurate record of measurement for each element

How does the mass number of an element differ from its average atomic mass?

Answers

the mass number is the total number of protons and neutrons in a nucleus of an element. The average atomic mass is the sum of the masses of an element's isotopes, each multiplied by their abundance.

Explain why the quantum number set (3,2,-3,+1/2) is not possible for an electron in a ground state atom

Answers

L = an integer from 0 to n-1 
mL = an integer from -L to +L 
ms = + or - 1/2 

the format is (n, L, mL, ms) 

so your 
n = 3... this is OK 
L = 2.. also OK.. if n=3, L can = 0, 1, or 2 
mL = -3 is NOT ok... if L=2.. mL can only be -2, -1, 0, +1, or +2 
ms = +1/2 and that is ok

Hope this helps!

Answer:

The electron spin can only take place in opposite directions.

Explanation:

The angular momentum of a quantum number deals with the shape of the atomic orbital. Each orbital has a specific shape. In addition, the electrons have specific spin directions. let's say a quantum number, m is having two three shells. It means that:

number of shells, n = 3.

The level will be 3

the possible spins will be 0, 1, 2.

This takes place in the negative direction as well to give:

-2 , -1, 0, 1, 2

Thus, 3,2,-3,+1/2 cannot be a quantum number as it does not have a equal and opposite spin.  

What is the bond type of CaO

Answers

it's a ionic compound
An ionic bond is between a metal and non-metal elements, while a covalent bond is between two or more non-metals. Calcium, a metal element, is bonded to the non-metal element oxygen

Explain how the quantum mechanical model of the atom describes the electron structure of an atom

Answers

Electrons are NOT in circular orbits around nucleus. -Theatomic orbital describes the probable location of the electrion Quantum Mechanical Model of the Atom Page 3 There are different kinds of atomic orbitals that differ in the amount of energy and shapes (where the electron probably is).

According to the model electrons in the same atom with the same principal quantum number (n) or primary energy level are said to occupy an atom's electron shell.

What is quantum mechanical model?

Quantum mechanical model is defined as the possibilities of inserting electrons within an atom by describing the principal energy level, energy level, orbital energy level, and orbital energy level.

Quantum mechanics is defined as a fundamental theory of physics that describes the physical aspects of nature at the atomic and subatomic particle scales.

Electrons are defined as the negatively charged subatomic particles that together with protons and neutrons forms an atom.

Protons are positively charged in nature, while neutrons are neutral in nature.

Thus, according to the model electrons in the same atom with the same principal quantum number (n) or primary energy level are said to occupy an atom's electron shell.

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An upright cylindrical tank with radius 6 m is being filled with water at a rate of 2 m3/min. how fast is the height of the water increasing?if h is the water's height, the volume of the water is v = πr2h. we must find dv/dt. differentiating both sides of the equation gives

Answers

Final answer:

The problem of determining how quickly the water level is rising in an upright cylindrical tank can be solved by identifying the rate of change of volume (dv/dt) and differentiating the volume equation relative to time.

Explanation:

The problem is about the rate of increase in the height of water in a cylindrical tank. As specified, if v = πr²h represents the volume of the water where r is the tank's radius and h is the water's height, then the rate of volume change dv/dt would differentiate the volume equation relative to time.

As the tank is cylindrical and upright, its radius does not change over time. Consequently, we differentiate the volume function with respect to time to find dv/dt = πr²dh/dt, where dh/dt represents how fast the water's height is increasing.

We are given dv/dt is equal to 2 m³/min since the water is filling at a rate of 2 m³/min. When we substitute the values and solve for dh/dt, we find the rate of increase of the height of water.


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Trouton's rule does not apply to water because in the liquid, water molecules are held together by an extensive network of hydrogen bonds. provide a molecular interpretation for the observation that trouton's rule underestimates the value of the entropy of vaporization of water

Answers

the molecular interpretation is not suitable for the assumption that there are much more interactions in the intermolecular level

We must account for the breaking/creation of hydrogen bondings, which is not the scope of the equilibria made in trouton's analysis

An ion from a given element has 22 protons and 18 electrons. what is the charge on the ion?

Answers

It has a positive charge. 22-18= +4. you just have to subtract the electrons from the protons. if you get a positive number your charge is positive if you get a negative number the charge is negative.

The charge on the ion is +4.

What is an ion?An ion is an atom or group of atoms where the number of electrons are not equal to the number of protons. To put it in a simple words, when a stable atom gains or loses an electron, it becomes an ion. Examples of ions are as follows: H+,Na+,Ca2+,F−,O2−

For a single atom, the charge is the number of protons minus the number of electrons.

Charge = Proton - electron

             = 22 - 18

             = +4

Hence, the charge on the ion is +4.

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What are 3 signs that a chemical change (chemical reaction) has taken or is taking place?

Answers

Heat has been released or lost. Odor may be present. Absence of a substance may be converted to something else.

Since the beginning of time, some people have believed that the Earth is flat. Beginning around 300 B.C., however, some began to wonder if the Earth is actually spherical in shape. Those that favored the flat Earth theory made the following observations: The Earth is stable because it is a flat landmass sandwiched between a flat layer of air and a flat layer of water. If the Earth is spherical, then oceans should be curved on top, but they aren't. Some rivers flow for hundreds of miles but only fall a few feet. The rivers should fall farther if the Earth is spherical. If the Earth is spherical, people and animals that inhabit the Earth would notice as they walked along its surface. Since mariners are able to use flat compasses to navigate their ships without crashing, the Earth must not be a sphere. Those that disputed the flat Earth theory countered the claim by observing that Christopher Columbus was able to sail around the Earth without falling off the edge and later, by presenting satellite imagery taken from space of a spherical Earth. This example demonstrates that
A. scientific knowledge is unattainable.
B. argumentation is a necessary part of scientific inquiry.
C. it is easy to resolve a scientific argument.
D. it is not possible to settle a dispute.

Answers

B. argumentation is a necessary part of scientific inquiry because the others don't make sense. it IS possible to set a dispute and scientific knowledge IS attainable so A and D are ruled out. It can be easy to resolve a scientific argument but sometimes like this one, it can take many years. That leaves B as the most logical answer. Hope that helps.

This example demonstrates that argumentation is a necessary part of scientific inquiry and the correct option is option B.

As new experiments are conducted and data is gathered, it can challenge or refine existing theories, leading to updates in scientific knowledge.

Technological advancements also play a role in driving change, as they provide scientists with new tools and methods to explore and observe the natural world.

Additionally, scientific debates and discussions within the scientific community contribute to the evolution of knowledge, as different perspectives and interpretations are considered.

Thus, the ideal selection is option B.

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