The coase theorem will will breakdown when ____________. (select all that apply)
Predict the mass of iron (III) sulfide produced when 3.0 g of iron filings react completely with 2.5 g of yellow sulfur solid, S8(s).
The complete balanced chemical reaction to this would be:
2 Fe + 3/8 S8 --> Fe2S3
First convert mass into number of moles.
moles Fe = 3 g / (55.845 g/mol) = 0.05372 mol Fe
moles S8 = 2.5 g / (256.52 g/mol) = 0.0097458 mol S8
Then we find the limiting reactant. The limiting reactant is the one which has lower (moles/coefficient) ratio.
Fe = 0.05372 / 2 = 0.02686
S8 = 0.0097458 / (3/8) = 0.02599
So since S8 has lower ratio, therefore it is the limiting reactant so we base our calculation from it. From the reaction, we get 1 mole of Fe2S3 for every 3/8 mol of S8, therefore:
moles Fe2S3 = 0.0097458 mol S8 * (1 mole Fe2S3 / 3/8 mol S8)
moles Fe2S3 = 0.02599 mol
The molar mass of Fe2S3 is 207.9 g/mol, so the mass is:
mass Fe2S3 = 0.02599 mol * 207.9 g/mol
mass Fe2S3 = 5.4 grams
The answer is D
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Tyrosine contains 11 hydrogen atoms, 9 carbon atoms, 3 oxygen atoms, and 1 nitrogen atom. what is the chemical formula for tyrosine?
Final answer:
Tyrosine's chemical formula is C₉H₁₁NO₃. It is an amino acid essential for protein synthesis and acts as a precursor for important molecules in the body.
Explanation:
The chemical formula for tyrosine is C₉H₁₁NO₃.
Tyrosine is an amino acid that contains 9 carbon atoms, 11 hydrogen atoms, 1 nitrogen atom, and 3 oxygen atoms. The molecular formula for tyrosine is derived based on the composition of these elements within the molecule.
Additionally, tyrosine is a non-essential amino acid that plays a role in protein synthesis, and it is also a precursor for various important molecules in the body like neurotransmitters and hormones.
what is the mass number of an ion that has 83 protons, 80 elections, and 126 neutrons
Considering the definition of mass number, the mass number of the ion is 209.
All atoms are made up of subatomic particles: protons and neutrons, which are part of their nucleus, and electrons, which revolve around them.
Mass Number is the integer equal to the sum of protons and neutrons present in the nucleus of an atom. This is:
Mass number = (number of protons) + (number of neutrons)
It is represented by the letter A.
In this case:
number of protons= 83 number of neutrons= 126So:
Mass number = 83 + 126
Solving:
Mass number= 209
In summary, the mass number of the ion is 209.
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brainly.com/question/11837355?referrer=searchResults brainly.com/question/1758023Bromine, a liquid at room temperature, has a boiling point of 58°C and a melting point of –7.2°C. Bromine can be classified as a
Explanation:
A pure substance is defined as the substance that contains same type of atoms or atoms of one type of molecule.
A pure substance will always have a fixed melting and boiling point.
For example, at room temperature bromine is a liquid and its boiling point of [tex]58^{o}C[/tex] and a melting point of [tex]-7.2^{o}C[/tex].
Hence, bromine is a pure substance.
Whereas when two or more different substances are mixed together irrespective of their ratio by mass then they are known as mixtures. And, mixtures always show a range of temperature for their melting and boiling point.
Hence, bromine is not a mixture.
Calculate the number of grams of hcl that can react with 0.470 g of al(oh)3.
To calculate the number of grams of HCl that can react with Al(OH)3, use the balanced chemical equation and stoichiometry. 0.470 g of Al(OH)3 reacts with approximately 1.32 g of HCl.
Explanation:To calculate the number of grams of HCl that can react with 0.470 g of Al(OH)3, we need to use the balanced chemical equation and stoichiometry. The balanced equation for the reaction between HCl and Al(OH)3 is:
6HCl + Al(OH)3 → 3H2O + AlCl3
From the equation, we can see that 6 moles of HCl react with 1 mole of Al(OH)3. To find the number of moles of HCl, we can use the molar mass of Al(OH)3 (78.0 g/mol) to convert the mass of Al(OH)3 to moles. Then, we can use the stoichiometry to calculate the number of moles of HCl. Finally, we can use the molar mass of HCl (36.46 g/mol) to convert moles of HCl to grams. Let's do the calculations:
Calculate moles of Al(OH)3: 0.470 g / 78.0 g/mol = 0.00603 molCalculate moles of HCl using stoichiometry: 0.00603 mol Al(OH)3 × (6 mol HCl / 1 mol Al(OH)3) = 0.0362 mol HClCalculate grams of HCl: 0.0362 mol HCl × 36.46 g/mol = 1.32 g HClTherefore, the number of grams of HCl that can react with 0.470 g of Al(OH)3 is approximately 1.32 g of HCl.
how many milliliters of a .89 M solution of HCl is needed to have 1.3 mole of HCl?
answer the following question by entering the numeric value with appropriate units. if the length of one side of a square is 12.0 m, what is the perimeter of the square?
If the length of one side of a square is 12.0 m, the perimeter of the square will be 48.0 meters.
What is a square?A square is a shape of geometry which have four sides and the condition for the sure that all side of it must be equal to each other in length width and height and the angles between the sides must be 90 degrees.
To calculate the perimeter the length of one side must be multiplied by 4 as squares have 4 sides with it so, 12 is multiplied by 4 and the result will be 48 meters. so, the parameter of the square will be 48 meters.
Therefore, the length of one side of a square is 12.0 m, and the perimeter of the square will be 48.0 meters.
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To carry out a particular reaction, you determine that you need 0.0500 moles of ammonium chloride. What volume of the solution described above will you need to complete the reaction without any leftover NH4Cl?
To obtain 0.0500 moles of NH4Cl from a 1.00 M solution, we need 50.0 mL of the solution. This is calculated by dividing the moles needed by the molarity of the solution.
Explanation:To determine the volume of ammonium chloride (NH4Cl) solution needed, we first need to know the molarity of the solution. The molarity can be calculated using the formula: Molarity (M) = Moles of solute / Volume of solution (in liters).
In the given information, a 5.36-g sample of NH4Cl is added to make a solution of 0.100 L. The molar mass of NH4Cl is approximately 53.49 g/mol, so 5.36 g is about 0.100 moles. Therefore, the molarity of the NH4Cl solution is 0.100 moles / 0.100 L = 1.00 M.
If we need 0.0500 moles of NH4Cl for the reaction, we can use the molarity to calculate the needed volume: Volume = Moles / Molarity = 0.0500 moles / 1.00 M = 0.0500 L or 50.0 mL. Therefore, we need 50.0 mL of the NH4Cl solution to provide the 0.0500 moles needed for the reaction.
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To complete the reaction without any leftover NH4Cl, you will need a volume of 0.500 L or 500 mL of the solution.
Explanation:To calculate the volume of the solution needed, we can use the formula: volume (in liters) = moles / molarity. In this case, the moles of ammonium chloride is given as 0.0500. We can calculate the molarity by dividing the moles by the volume in liters. The given volume of the solution is 0.5000 L. So, the molarity will be:
Molarity = Moles / Volume = 0.0500 moles / 0.5000 L = 0.100 M
Now, we have the molarity, which is 0.100 M. To find the required volume of the solution, we can rearrange the formula: volume = moles / molarity. Substituting the given values, the volume will be:
Volume = Moles / Molarity = 0.0500 moles / 0.100 M = 0.500 L or 500 mL
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What is the ionic charge for the calcium ion in CaCO3?
Why is the third equivalence point not observed in the titration curve for phosphoric acid?
Final answer:
The third equivalence point for phosphoric acid is not observed due to the weak acidity of HPO, resulting in an unclear definition of the pH at this point.
Explanation:
The third equivalence point for phosphoric acid (H3PO4) is not observed in the titration curve because HPO is a very weak acid, resulting in the third deprotonation step having a pH that is not well-defined.
The first two equivalence points are seen at approximately pH 4.6 and pH 9.8, corresponding to the deprotonation of H3PO4 and H2PO4-, respectively. Due to the weak acidity of HPO, the third equivalence point at pH ≈ 13 is not clearly distinguishable
What is the momentum of a 66-kilogram ice skater gliding across the ice at a speed of 7 m/s
Why is it important to form sparingly soluble salt in gravimetric analysis?
What observations led to the periodic law? what observations led to the periodic law? observation that certain elements possess such property as radioactivity observation that the all halogen elements have similar properties observation that the all metals have similar properties observation that the properties of elements recur and certain elements have similar properties?
The periodic law was derived from the observation of recurring similar properties among elements when arranged by atomic mass, which then shifted to atomic number. This led to the development of the modern periodic table where elements are grouped based on their properties, as demonstrated by groups of elements like the halogens exhibiting closely related characteristics.
Explanation:The observations that led to the periodic law were predicated on the identification of patterns in the properties of elements when arranged by increasing atomic mass, which was later refined to atomic number. Early chemists noticed that elements with similar properties occurred at regular intervals, a concept known as periodicity. Dmitri Mendeleev, in particular, played a pivotal role, noting the regular occurrence of properties and organizing elements into a table accordingly, even leaving gaps for then-undiscovered elements, predicting their existence and properties. His work was critical in developing the modern periodic table, where elements are positioned in order of increasing atomic number, and housed in groups and periods where elements in the same group exhibit similar chemical properties.
Examples confirming periodic law include the observation that all halogen elements in group 17 show similar properties, such as being non-metals and forming salts with metals. Additionally, the observation that all metals display metallic characteristics and parallel reactivity patterns supported the formulation of the periodic table. Moreover, advancements like the discovery of radioactivity, while not a direct observation leading to the periodic law, provided further insight into the atomic structure and properties of elements.
____ 46. the number of electrons present in the s orbitals in the outermost electron shell of the alkaline earth (group iia) metals is ____.
Using MO theory, predict which of the following species has the longest bond and which the strongest bond, respectively: O2, O2−, O22−
MO theory i.e. molecular orbital theory is used to determine the structure of molecule and explains the bonding present in the molecule by using linear combination of atomic orbitals. The bond length in the given species of oxygen can be identify on the basis of the positions of the electrons in this theory.
The mathematical expression of bond order is given by:
[tex]Bond order = \frac{1}{2}\times (electrons in bonding Molecular orbitals - electrons in anti-bonding Molecular orbitals)[/tex]
The molecular diagrams are shown in the image.
Now, calculate bond orders:
For, [tex]O_{2}^{2-}[/tex]: It consist of 10 bonding electrons and 8 anti-bonding electrons.
Bond order = [tex] \frac{1}{2}\times (10 - 8)[/tex]
= 1
For, [tex]O_{2}[/tex]: It consist of 10 bonding electrons and 6 anti-bonding electrons.
Bond order = [tex] \frac{1}{2}\times (10 - 6)[/tex]
= 2
For, [tex]O_{2}^{-}[/tex]: It consist of 10 bonding electrons and 7 anti-bonding electrons.
Bond order = [tex] \frac{1}{2}\times (10 - 7)[/tex]
= 1.5
Since, bond order is inversely proportional to bond length implies higher the bond order short will be the bond length.
Thus, order of bond length: [tex]O_{2}< O_{2}^{-}< O_{2}^{2-}[/tex]
Longest bond: [tex]O_{2}^{2-}[/tex]
Using Molecular Orbital theory, O22- has the longest bond, because it has the fewest bonding electrons. O2 has the strongest bond due to its highest bond order.
Explanation:In molecular orbital (MO) theory, the bond length is dependent on the number of bonding electrons. The more bonding electrons, the shorter the bond. Bond strength, conversely, is related to bond order - the higher the bond order, the stronger the bond. O2 has a bond order of 2, O2- has a bond order of 1.5, and O22- has a bond order of 1. Therefore:
The species with the longest bond is O22- as it has the least bonding electrons, hence longer distance between nuclei due to less attraction.The species with the strongest bond is O2, which has the highest bond order, indicating higher bond energy.Learn more about Molecular Orbital Theory here:https://brainly.com/question/31844972
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if 4.35 KJ of
heat is added to 15.5 g of water at 5.00 Celsius what will be the result in state and temp of the water
Chamber 1 and Chamber 2 have equal volumes of 1.0L and are assumed to be rigid containers. The chambers are connected by a valve that is initially closed. Chamber 1 contains 2.00 moles of helium and Chamber 2 contains 1.00 mol of helium. Both chambers are at a temperature of 27°C.Part 3.When the valve is opened, what happens to the pressure in Chamber 1? Choose the best answer.
Decide whether each molecule is stable or not. decide whether each molecule would be diamagnetic or paramagnetic. calculate each molecule bond order.
What is the density of an unknown substance that has a mass of 50 g and its measurements are 9.0 cm high, 10cm long, and 2 cm wide?
what elements make up molecules make up molecules of sugar
Answer:
Carbon, hydrogen and oxygen.
Explanation:
Hello,
Chemically speaking, sucrose is the molecule composing the sugar and it is shown on the attached document wherein it is seen that it is made up of carbon, hydrogen and oxygen. In addition, it is categorized as disaccharide, a molecule consisting of two monosaccharides: glucose and fructose. It is produced naturally in plants, from which table sugar is refined. It has the shown below molecular formula:
[tex]C_{12}H_{22}O_{11}[/tex]
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A cube of aluminum is 20 cm on edge. aluminum has a density of 2.7 g/cm3 and a specific heat of 0.217 cal/g0c. what is the heat in calories needed to raise the temperature of the cube from 200 to 3000c?
A common unit of energy is the calorie. A calorie is defined as the amount of heat that is needed to raise the temperature of one gram of water one degree centigrade. Modern convention uses a unit of energy called a joule. A calorie is equal to 4.184 joules. A joule is approximately the energy needed to lift 2000 grams a distance of 10 centimeters.
Heat is transferred by either direct transfer from one object touching another or by the emission of radiation in the form of infrared radiation. Two results can occur as a result of this transfer of thermal energy. A substance can undergo either a change in temperature or a change in physical state.
When a substance exchanges heat with its surroundings without changing its physical state, the substance will undergo a change in temperature. This change in temperature depends on a property called specific heat capacity.
Specific heat capacity is the "heat needed to produce a given temperature change (in Celsius or Kelvin) per gram of substance" and is expressed in the units J/gK. Specific heat capacity depends on both the type of substance and the mass of the substance.The "D" means "change in" and "q" represents the quantity of heat.
In a calorimeter, the equilibrium temperature of copper in water is determined. if the water is replaced with a liquid that has a lower specific heat, what will happen to the equilibrium temperature
Final answer:
Replacing water with a liquid with a lower specific heat in a calorimeter experiment will result in a higher final equilibrium temperature for the copper and liquid compared to if water were used.
Explanation:
When conducting an experiment in a calorimeter where a hot piece of copper is placed in a liquid to reach thermal equilibrium, the specific heat capacity of the liquid will affect the final equilibrium temperature of both substances. If the copper is submerged in a liquid with a lower specific heat than water, the liquid will reach a higher temperature than it would if water were used. This is because a liquid with a lower specific heat capacity requires less heat transfer to increase its temperature by 1°C. Accordingly, the copper would not cool down as much as it would in water because less heat is needed to warm up the liquid. Hence, the final equilibrium temperature when using a liquid with a lower specific heat will be higher than if water were used.
How many water molecules are in a block of ice containing 1.75 mol of water (H2O)?
Why did the better part of century pass between Thompson’s work and Dalton’s work
A solution containing a mixture of metal cations was treated with dilute hcl and a precipitate formed. the solution was filtered and h2s was bubbled through the acidic solution. a precipitate again formed and was filtered off. then, the ph was raised to about 8 and h2s was again bubbled through the solution. this time, no precipitate formed. finally, the solution was treated with a sodium carbonate solution, which resulted in formation of a precipitate. which metal ions were definitely present, which were definitely absent, and which may or may not have been present in the original mixture?
How many milliliters of 4.00 m hcl(aq) are required to react with 2.75 g of zn(s)?
Suppose that your experimental formula is mg2o3. what are the implied charges on the ions in mg2o3? do these charges agree with those expected from trends in the periodic table? explain.
A. what are the implied charges on the ions in mg2o3?
Suppose that we have an element A with a charge “a+”, and element B with a charge “b-”. The chemical reaction would be:
A(a+) + B(b-) --> AbBa
So in this case, we can see that:
Mg has a charge of 3+ while O has a charge of 2-.
B. do these charges agree with those expected from trends in the periodic table
From the periodic table, we can see that Mg should only have a charge of 2+ and not 3+.
This might mean that Mg can take different oxidation states.
How many cations are there in 20.0 g of sodium phosphate?
Which characteristic of life is demonstrated when oak trees make many acorns that can become new oak trees?
Reproduction is the characteristic of life is demonstrated when oak trees make many acorns that can become new oak trees.
what are the features of oak tree ?Oak trees has the majestic branches consist of huge areas, having notable characteristics, its height which reach from heights of up to 100 feet, and having the width of up to 150 feet.
The oak family is the largest family consist of 600 species, divided into White oak which is a dark grayish-brown color and the branches of the white oak are not twisted, produce acorns with colorings that range from light green to tan, and rich green leaves.
Red Oak tree have bright red color and the feature like recognizable thick golden hairs that grown along the underside of its leaves.
Black Oak is dark-colored trunk for which this tree is named. Another classic feature with twisted branches and root system, contoured shape of the black oak.
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