In the given compound the oxidation state of Ca is+2 and that of F2 is -1.
Using the following 2 rules we can find the oxidation of each atom in the compound in CaF2-
Halogens (group 17 elements) are given an oxidation number of -1 in compounds composed of two elements. Here Fluorine is an halogen and thus showing -1 oxidation stateIn their compounds, all alkaline earth metals (group 2 elements) show an oxidation state of +2. Here Calcium being the alkali earth metal displays +2 oxidation state.Some additional rules for calculating oxidation state are -
Any element that is free has an oxidation number of zero.The oxidation state of the hydrogen atom (H) is 1. However, it displays an oxidation number of -1 when coupled with an element that has a lower electronegativity than it.Most of the compounds made up of oxygen have an oxidation of -2. The oxidation number corresponding to oxygen in peroxides, on the other hand, is -1.In their compounds, all alkali metals (group 1 elements) have an oxidation state of 1.The total of all the constituent atoms' oxidation numbers is 0 for neutral substances.The net charge of a polyatomic ion is equal to the total sum of all the oxidation numbers of the atoms that make up the ion.These procedures can be used to determine an atom's oxidation number in a specific chemical.To learn more about oxidation state click here:
https://brainly.com/question/25551544
#SPJ4
The above question is incomplete. Check below the complete question-
In the molecule CaF₂ determine the oxidation state of each atom. Express your answer as signed integers separated by a comma. the oxidation states of Ca and F.
a lagoon is to be designed to accommodate an input flow of 0.10 m3/s of nonconservative pollutant with concentration 30.0 mg/l and reaction rate constant 0.20/day. the effluent from the lagoon must have pollutant concentration of less than 10.0 mg/l. assuming complete mixing, how large must the lagoon be?
The volume of the lagoon for complete mixing must be larger than 86580 m³ or 8.658 ×10⁷ L.
A lagoon is a small body of water that is shielded from a larger one (often the ocean) by coral reefs, islands, or sandbars. Many more names for lagoons include estuaries, sounds, bays, and even lakes.
Non-conservative Pollutants are substances that are thought to be partially or completely destroyed, biodegraded, chemically altered, or volatilized within the POTW. Cadmium and lead are examples of heavy metal pollution.
Effluent is treated sewage from a sewage treatment plant or septic tank. Additionally, it is known as "trade effluent."
The untreated or contaminated water that enters the WWTP ready for processing is referred to as "influence flow." Effluent flow, on the other hand, occurs when wastewater leaves a plant and enters a body of water.
To learn about effluent
https://brainly.com/question/29439696
#SPJ4
How does the third law of thermodynamics allow absolute entropies of substances to be determined? A) It defines a reference point by which entropy changes can be measured and assigned as an absolute entropy for a substance. B) It defines the temperature at which all absolute entropies are measured. C) It requires that all energy in a process be conserved to accurately measure an absolute entropy. D) It provides a reference point for the absolute entropy of the universe. E) It requires that a process be reversible to measure the absolute entropy change.
The third law of thermodynamics will allow by the absolute entropies of the substances to be determined by a reference point by which entropy will changes can be measured and assigned an absolute entropy for the substance.
The third law of thermodynamics states that the entropy of an system approaches a constant value as the temperature approaches absolute zero. The entropy of a system at absolute zero is typically zero, and in all the cases it is determined only by the number of different ground states it has.
Consequences: It defines the sign of the entropy of any of the substance at temperatures above absolute zero as positive, and it provides a fixed reference point that allows us to measure the absolute entropy of any of the substance at any temperature.
To know more about entropy here
https://brainly.com/question/24278877
#SPJ4
600. 0 mL of H2S)4 i titrated with a 6. 0 M olution of NaOH and require only 6. 8 mL of NaOH to reach the endpoint. According to the unbalanced equation H2SO4 NaOH = H2) Na2SO4 what i the concentration of the H2SO4
1 mole of Sulfuric acid reacts with 2 moles sodium hydroxide to give 1 mole of sodium sulfate and 2 moles of water. Here the concentration of H₂SO₄ used is 0.035 M.
The balanced equation for the reaction is
H₂SO₄ + 2NaOH ⇒ Na₂SO₄ + 2H₂O
So 1 mole of sulfuric acid reacts with 2 moles of sodium hydroxide to give one mole of sodium sulphate and two moles of water.
Here 6.8 ml of 6 M sodium hydroxide is reacted.
Molarity = number of moles/volume in L
6 = n/ 0.0068 L
n = 6 × 0.0068 = 0.0408 moles.
So, number of moles of H₂SO₄ reacted =
Number of moles of NaOH/2 = 0.0408/2 = 0.0204
Concentration = number of moles/ Volume in L
= 0.0204/ 0.6 =0.035M.
For more details regarding calculations of molarity, molar mass and concentration, kindly refer
https://brainly.com/question/16727614
#SPJ4
. the molecular mass of bromophenol blue, is 669.9607. find the atomic mass of the copper from a periodic table.
The atomic mass of copper is 63.546 amu. This can be found on the periodic table. The molecular mass of bromophenol blue is 669.9607 g/mol.
Bromophenol blue is a dye made of copper and bromine, which can be used as an indicator in acid-base titrations. Its molecular formula is CuBr2, meaning that it has two atoms of bromine and one atom of copper.
The atomic mass of copper is 63.546 amu, and the atomic mass of bromine is 79.904 amu. Therefore, the molecular mass of bromophenol blue is 669.9607 g/mol (63.546 + 79.904 * 2). This means that for every mole of bromophenol blue, we have 669.9607 grams.
Learn more about Bromophenol:
https://brainly.com/question/9187859
#SPJ4
for the number of moles in part a, what is the difference in chemical energy between the reactants and the products for this reaction? (give the absolute value only.)
The number of moles alone does not determine the difference in chemical energy between reactants and products in a reaction. The difference in chemical energy, also known as the change in enthalpy (ΔH), depends on various factors such as the chemical properties of the reactants and products, the temperature and pressure conditions, and the reaction mechanism.
To calculate ΔH, we need to know the standard enthalpy of formation (ΔHf°) for each species involved in the reaction. ΔHf° is the change in enthalpy when one mole of a substance is formed from its constituent elements in their standard states. By using the equation ΔH = ΣΔHf° (products) - ΣΔHf° (reactants), we can determine the ΔH for the reaction.
It is important to note that ΔH can have different values for exothermic and endothermic reactions. An exothermic reaction releases heat and has a negative ΔH, while an endothermic reaction absorbs heat and has a positive ΔH. The magnitude of ΔH can provide information about the energy required or released in a reaction and can be used to predict the feasibility and rate of a reaction.
To know more about chemical energy: https://brainly.com/question/30288262
#SPJ4
At the end of mitosis, the cells are:
a.have some genetic similarities
b.genetically identical to each other
c.genetically different from each other
At the end of mitosis, the cells are genetically identical to each other. Therefore, option B is correct.
What do you mean by mitosis ?Mitosis is the process by which a cell replicates and then segregates its chromosomes, producing two identical nuclei in preparation for cell division.
Meiosis produces four haploid (n) gametes that are genetically distinct from each other and the original parent (germ) cell, whereas mitosis produces two diploid (2n) somatic cells.
Mitosis results in the formation of two identical daughter cells, each with the same number of chromosomes as the parent cell.
Thus, option B is correct.
To learn more about the mitosis, follow the link;
https://brainly.com/question/29776367
#SPJ1
Answer:
genetically identical to each other
Explanation:
a heating element draws 15 a at 220 v. how much time will it take to evaporate 3 kg of water at 100oc using the element? lv
It takes 34.1 minutes to evaporate 3 kg of water at 100°C using the element.
The heating element's current draw is I=15 A.
V=220 V is the supply voltage.
The water's mass, m=3 kg
The water's temperature is T=100 °C.
Water's latent heat of vaporization, L v, is 2.25 106 J/kg.
The heating element's power is provided by,
P = IV =Wt
where W is the amount of labor the heating element does to evaporate the water, and t is the amount of time it takes.
Regarding arranging,
t=W/IV
The work carried out on the water and by the heater is identical. Additionally, the effort expended to evaporate the specified amount of water is equivalent to that effort.
i.e.,
W = mL/IV
Therefore,
t = mL/IV
The time will be in seconds because all the values are in SI units.
Thus, the amount of time in minutes it takes for the water to evaporate is given by,
t = mL/IV x 60
Using the known values as a substitute
t = (3 x 2.25 x 10⁶) / (15 x 220 x 60)
Therefore, it takes 34.1 minutes to evaporate the specified volume of water.
Learn more about heat at https://brainly.com/question/24172485
#SPJ4
why no reaction between cyclohexane and sulphuric acid
Cyclohexane and sulfuric acid do not react because cyclohexane is a non-polar, hydrophobic molecule and does not form hydrogen bonds with polar, hydrophilic molecules like sulfuric acid.
In addition, cyclohexane is a saturated hydrocarbon, which means it contains only single bonds between the carbon atoms. Sulfuric acid is a strong protonic acid that readily reacts with compounds that contain reactive functional groups, such as alcohols and carboxylic acids. However, it does not react with saturated hydrocarbons like cyclohexane, which lack these reactive functional groups.
It is also worth noting that cyclohexane is a relatively unreactive molecule in general, due to its stability and the absence of any reactive functional groups. This makes it useful as a solvent for many organic reactions, as it does not react with other compounds in the reaction mixture.
To know more about Cyclohexane click here:
https://brainly.com/question/17019157#
#SPJ11
a reaction takes place when 1.6 mol al is added to 2.7 mol o2. what is present at the end of the reaction? 4al 3o2  2al2o3
The reaction takes place when the 1.6 mol Al is added to 2.7 mol O₂. The one present at the end of the reaction is 1.5 mole of O₂.
The balance reaction is as :
4Al + 3O₂ ----> 2Al₂O₃
The moles of Al = 1.6 mol
The moles of O₂ = 2.7 mol
4 mole of Al react with 3 mole of O₂
Moles of Al = (4/3 ) 2.7
= 3.6 mol
Therefore, the Al is the limiting reagent.
The moles of O₂ = (3/4) 1.6
= 1.2 mol
The moles in excess = 2.7 - 1.2
The moles in excess = 1.5 mole of O₂ .
To learn more about moles here
https://brainly.com/question/26416088
#SPJ4
There is 35.7% composition of Zinc in a compound that contains both zinc and oxygen. What percentage of oxygen is in this compound?
The mass percent of an element says how much gram of it is present in 100 g of the compound. Hence, the total percent is 100. Therefore, if the mass percent of Zn is 35.7, then the mass percent of oxygen is 64.3%.
What is percentage composition ?The percentage composition of an element in a compound is the ratio of its mass to the total mass of the compound multiplied by 100. It is common term to expresses the concentration and composition of constituent elements in a compound.
35.7 % of Zn in a compound of zinc and oxygen means, 35.7 g of zinc is present in 100 g of the compound. It is said that only Zn and oxygen is present in the compound.
Thus, mass percent of oxygen = 100 -35.7 = 64.3%.
Therefore, the percentage composition of oxygen in the compound is 64.3%.
Find more on percentage composition:
https://brainly.com/question/11952337
#SPJ1
what is the meaning of an ion's equilibrium potential?
Ion's equilibrium potential is defined as the state in which the tendency of ions (electrically charged particles) to flow across a cell membrane from regions of high concentration is exactly balanced by the opposing potential difference (electric charge) present across the membrane.
In other words it is also defined as the electrical potential difference across the cell membrane that exactly balances the concentration gradient for an ion.
The other widely used name of equilibrium potential is called the Nernst potential, after Walther Nernst, a German physical chemist who, in the late 19th century, developed equations for calculating the electrical potential at which there is no longer a net flux of a specific ion across a membrane.
Learn more about ion's equilibrium potential from the link given below.
https://brainly.com/question/12971132
#SPJ4
why does sodium hypochlorite have to be added slowly to borneol
Sodium hypochlorite (NaClO) should be added slowly to borenol because the reaction between sodium hypochlorite and borenol is exothermic and releases heat. If the sodium hypochlorite is added too quickly, the reaction will become very exothermic and generate a lot of heat, which could cause the reaction mixture to boil over or even explode.
By adding the sodium hypochlorite slowly, the heat generated by the reaction is dissipated gradually, preventing an uncontrolled release of energy. This helps to ensure the reaction proceeds smoothly and safely. Additionally, by adding the sodium hypochlorite slowly, the reaction can be controlled more easily, which can lead to a more efficient and complete reaction.
Learn more about sodium hypochlorite here:
https://brainly.com/question/29708118
#SPJ4
a chemical reaction typically produces 4.55 g of naoh. what would be the percent yield if the reaction could theoretically produce 5.00 g
A chemical reaction typically produces 4.55 g of NaOH. The percent yield if the reaction could theoretically produce 5.00 g would be 91 %
Theoretical yield is the amount of a product that results from the complete conversion of the limiting reactant in a chemical reaction.
The actual yield is calculated as the theoretical yield multiplied by 100 to get the percent yield. the formula will be:
percent yield = ( experimental yield / theoretical yield ) × 100 %
The theoretical yield of the reaction = 5 g
mass of the NaOH produced = 4.55 g
the percent yield = ( experimental yield / theoretical yield ) × 100 %
= ( 4.55 g / 5 ) ×100 %
= 91 %
To learn more about percent yield here
brainly.com/question/14380568
#SPJ4
if you spill a chemical on the floor or bench, you should... throw an acid neutralizing agent on it. notify your teaching assistant and obtain the proper clean-up procedure. use water and paper towels to clean up the spill. ignore it. do none of the above.
if you spill a chemical on the floor or bench, you should notify your teaching assistant and obtain the proper clean-up procedure.
The compounds are very risky. They are poisonous when inhaled and will result in serious burns. Additionally, if preparation steps are carried out improperly, there is a chance of explosion.
Please create, read, and sign risk assessments for each process before beginning any work. For each chemical, create, read, and sign COSHH forms. If your lab has never used these procedures before, let your safety officer know.
Have someone demonstrate the procedure first, if at all feasible. Work in a functional fume hood at all times, and only prepare the necessary amount of acid. Put on a lab coat, safety glasses, and butyl gloves.
Learn more about chemical:
https://brainly.com/question/29240183
#SPJ4
what is the number & variety of species that are present in an area
Biodiversity is the number & variety of species that are present in an area.
About diversityThe definition of diversity of flora and fauna (biodiversity) is the variability among living things from all sources, including the interactions of terrestrial, coastal and marine ecosystems and other aquatic ecosystems and the ecological complexes in which living things live as a part. This includes species diversity, between species and ecosystems.
In another sense, diversity of flora and fauna is the availability of diversity of biological resources in the form of types and richness of germplasm (genetic diversity within species), diversity between species and diversity of ecosystems.
Biodiversity is all life on this earth including plants, animals, fungi and microorganisms as well as the various genetic materials they contain and the diversity of the ecological systems in which they live. This includes the relative abundance and genetic diversity of organisms from all habitats, whether on land, sea or other aquatic systems.
Learn more about biodiversity at
https://brainly.com/question/26110061
#SPJ1
in normal-phase column chromatography, which solvent has more eluting power: hexane or dichloromethane? how is the eluting power of a solvent related to its polarity?
In normal-phase column chromatography, the solvent which has more eluting power is dichloromethane. The solvent’s eluting power increases with polarity.
Normal-phase column chromatography (NPLC) refers to a separation technique where components are distributed between two phases. One phase is stationary and polar and the other is non-polar and moves in a definite direction. Hence, NPLC utilizes columns packed with polar stationary phases combined with nonpolar or moderately polar mobile phases to separate the mixture components. The rate at which solutes migrate through NPLC columns is primarily a function of their polarity.
In normal-phase column chromatography, the solvent which has more eluting power is dichloromethane as it is more polar. The eluting power of a solvent refers to a measure of how well the solvent can pull an analyte off the adsorbent to which it is attached. Dichloromethane molecules will attract the polar molecules and elute them from the column.
Learn more about Normal-phase column chromatography:
https://brainly.com/question/14162089
#SPJ4
in the lewis structure of the nitrate anion, no3–, if all atoms obey the octet rule, there must be:
The nitrate anion must have 6 additional electrons, making it a negative ion with a total of 32 electrons.
In the Lewis structure of the nitrate anion, NO3–, the central nitrogen atom is surrounded by three oxygen atoms and is connected to them with single covalent bonds. If each atom is to obey the octet rule, then the nitrogen atom must have 8 valence electrons, and each of the oxygen atoms must have 6 valence electrons. This means that the nitrate anion must have a total of 8 + 3×6 = 26 valence electrons. The nitrate anion must also have a total of 8 + 3×8 = 32 electrons when considering the octet rule for the oxygen atoms. As a result, the nitrate anion must have 6 additional electrons, making it a negative ion with a total of 32 electrons.
Learn more about nitrate anion here:
https://brainly.com/question/29460989
#SPJ4
Complete question:
What is the Lewis structure of the nitrate anion, NO3–, if all atoms obey the octet rule?
A balloon floats inside a stopped car. When the car starts moving forward, the balloon appears to move backward relative to the car. Which statement best explains this observation?
Inertia prevents the force of the car from acting on the balloon.
The motion of the car creates an unbalanced backward force on the balloon.
The car moves forward, while inertia keeps the balloon in place.
The force of inertia on the balloon balances the force from the motion of the car.
The motion of the car creates an unbalanced backward force on the balloon. Because, the force of inertia drag the car backwards.
What is inertia ?According to Newton's first law of motion, an objects tends to continue in its state of motion or rest until an external force acting on it. This tendency of the objects is called inertia.
The impacts of inertia can be well explained based on on real life examples. If we might had the experience of moving to front in a vehicle which suddenly breakes. It is the tendency of the vehicle to stay in motion.
Similarly the car when started from rest initially tends to stay at rest and that's why we feel it moves back ward. Similarly the car will move forward when it is suddenly stops. Therefore, the balloon that floats on the car will experience a backwards force.
Find more on more inertia:
brainly.com/question/3268780
#SPJ1
a colorless liquid composed of 46.68% nitrogen and 53.32% oxygen has a molar mass of 58.12 g/mol.
determine how many moles of oxygen and nitrogen
determine the compound empirical formula
determine the molar mass of the empirical formula
determine the "n" value
determine the molecular formula
Answer:
- The molecular formula of the compound is N1O1
- The empirical formula of the compound is therefore N1O1.01.
- Molar mass = 60.02 g/mol.
- "n" = 0.97/1 (rounded up)
Explanation:
To determine how many moles of oxygen and nitrogen, we first need to calculate the number of moles of each element in the liquid using the percentage composition and the molar mass.
Nitrogen: 46.68 g of Nitrogen / (28.02 g/mol) = 1.66 moles of Nitrogen
Oxygen: 53.32 g of Oxygen / (32.00 g/mol) = 1.67 moles of Oxygen
To determine the compound empirical formula, we need to divide the number of moles of each element by the smallest number of moles among them. In this case, the smallest number of moles is 1.66 moles of Nitrogen. So, the empirical formula would be N:O = 1.66 : 1.67 = 1 : 1.01. The empirical formula of the compound is therefore N1O1.01.
The molar mass of the empirical formula is calculated by adding up the atomic masses of all the atoms in the formula: 28.02 g/mol (for nitrogen) + 32.00 g/mol (for oxygen) = 60.02 g/mol.
The "n" value in the molecular formula is a whole number that represents the multiple of the empirical formula. It can be calculated by dividing the molar mass of the compound (58.12 g/mol) by the molar mass of the empirical formula (60.02 g/mol): 58.12 g/mol / 60.02 g/mol = 0.97. Round up the result to the nearest whole number, which is 1.
The molecular formula of the compound is the empirical formula multiplied by the "n" value: N1O1.01 * 1 = N1O1.
So, the molecular formula of the compound is N1O1, meaning it contains one nitrogen atom and one oxygen atom.
if 102 mg of methyl cinnamte is reduced to give the product shown in scheme 4 and 87 mg of product is isolated, what is the percent yield? give only the number to at least one decimal place and not a % or the word percent.
To calculate the percent methyl yield, we need to divide the amount of product obtained by the amount of theoretical yield, then multiply by 100.
Theoretical yield = 102 mg
Actual yield = 87 mg
Percent yield = (Actual yield / Theoretical yield) * 100
Percent yield = (87 / 102) * 100 = 85.3
So the Methyl is : 85.3
About Methyl
Methyl is a hydrophobic alkyl functional group. Its name is derived from methane, a simple alkane compound. Methyl is methane which has lost a hydrogen atom, making it unstable and reactive. Its chemical formula is -CH₃. This group occurs frequently in many organic compounds.
Learn More About Methyl at https://brainly.com/question/9578561
#SPJ4
How many signals are in its 13C NMR spectrum?
There are 6 expected signals in 13C NMR spectrum.
The resonances are caused due to 13C nuclei that are split by neighboring H atoms. These splitting would make the appearance complicate of the spectra making them harder to interpret. Therefore, in a "normal" 13C spectra, these couplings are thereby "removed" by applying a continuous second radio frequency signal of a broad frequency range that excites all the H nuclei and H nuclei cancels out the coupling patterns due to the interaction of the H with the 13C. Which implies that each C is seen as a single line.
During off-resonance decoupling, the one bond C-H couplings are retained so the signal for a particular C is given by the number of attached H in accordance with n+1 rule.
Learn more about NMR spectrum from the link given below.
https://brainly.com/question/14486064
#SPJ4
why perfume manufacturer would choose methyl butanoate
A perfume manufacturer may choose methyl butanoate for its fruity, sweet, and tropical aroma, its versatility as a fragrance ingredient, and its relatively low cost compared to other fragrance ingredients.
Methyl butanoate is a common fragrance ingredient used by perfume manufacturers because of its fruity, sweet, and tropical aroma. It has a characteristic ester odor similar to that of pineapple, and is therefore often used to impart a fruity note to perfumes and flavorings.
Methyl butanoate is also a versatile fragrance ingredient that can be blended with other aroma compounds to produce a wide range of fragrances. For example, it can be used in combination with floral, citrus, or woody notes to create unique and complex fragrances.
Additionally, methyl butanoate is a relatively low-cost fragrance ingredient, which is another reason why perfume manufacturers might choose to use it. Its low cost and versatility make it a popular choice for use in both high-end perfumes and mass-market fragrances.
In summary, perfume manufacturers may choose methyl butanoate for its fruity, sweet, and tropical aroma, its versatility as a fragrance ingredient, and its relatively low cost compared to other fragrance ingredients.
Learn more about methyl butanoate here:
https://brainly.com/question/24303563
#SPJ4
Lucite contains 59.9 g C, 8.06 g H,
and 32.0 g O. You want to determine the empirical formula.
How many moles of C are in the sample?
can someone help and give me the right answer it's due today at 5pm i will give brainlist please help
Convection currents are the underlying cause of tectonic plate interactions that cause geological events, like earthquakes and volcanoes.
A description of the geological event.The tectonic plate interactions and processes that result in the construction of mountains and other landforms constitute the geological event that is taking place. Convection currents, which happen as molten rock rises from the Earth's mantle below the surface and then cools as it flows to the surface, are one of the primary processes generating this creation.
The plates move and interact with one another as a result of this process, which is fueled by the disparity in density between the hot and cold rock. Divergent boundaries, the kind of boundary at which this phenomenon occurs, are brought about by two plates moving apart.
The creation of the Himalayan Mountains is an illustration of this process. The Himalayas were created as a result of the Himalayan Plate colliding with the Eurasian Plate as it steadily moved north.
High peaks, deep valleys, and steep cliffs are some of the physical features that are visible as a result of this process. The highest mountain range in the world is the Himalayas, and Mount Everest is its highest peak.
To learn more about geological event refer :
https://brainly.com/question/29329752
#SPJ1
in the late 18th century, lazzaro spallanzani boiled broths for long periods of time and sealed the flasks by melting their glass necks closed. based on the results of his experiments, he concluded that
Lazzaro Spallanzani concluded that boiling the broth killed any potential living organisms and that air was not necessary for life, based on the results of his experiments boiling broths and sealing the flasks.
Lazzaro Spallanzani was an Italian scientist who lived in the late 18th century. In his experiments, he boiled broths for extended periods of time and then sealed the flasks by melting their glass necks closed. By doing this, he aimed to determine the conditions necessary for life to exist.
The results of his experiments showed that boiling the broth killed any potential living organisms and that the broth did not contain any new microorganisms after being sealed and boiled. This led Spallanzani to conclude that air was not necessary for life and that life could not arise spontaneously from non-living matter.
These findings were crucial in disproving the then-prevailing idea of spontaneous generation, which was the belief that life could arise spontaneously from non-living matter. Spallanzani's experiments paved the way for further advancements in microbiology and the understanding of the origins of life.
Learn more about Spallanzani's experiments here:
https://brainly.com/question/17385986
#SPJ4
If 3.2 g of salicylic acid and 6.3 ml of acetic anhydride are used in synthesis of aspirin, what is the theoretical yield in grams? the molar mass of aspirin is 180 g/mol. (hint: you need to find the limiting reagent first) a)2.4 g b)1.9 g c)4.2 g d)3.2 g
C. The theoretical yield of aspirin is found to be 4.2g
What information does theoretical yield provide?The largest amount of product that could be generated from the provided reactant amounts is termed as the theoretical yield. The quantity of product that actually formed during the reaction in a laboratory environment is known as the actual yield.
C₇H₆O₃ + C₄H₆O₃→ C₉H₈O₄ ( aspirin)
No of moles of salicylic acid => 3.2/138.122 => 0.023 mol
no of moles of acetic anhydride => 1.08 g/mL x 6.3 mL / 102.089 g/mol
=> 0.066mol
salicylic acid is limiting reagent
Theoretical yield calculated:
1 mole of salicylic acid=> 1 mole of aspirin
Hence, 0.023 mol of aspirin formed in this reaction.
Theorectical yield of aspirin => 0.023 mol x 180g/mol => 4.2g
Learn more about theoretical yield here:
brainly.com/question/14966377
#SPJ4
the time averaged scalar potential of a neutral hydrogen atom is given by where q is the ptoton charge. find the charge density that is associated with this potential
A neutral hydrogen atom's time-averaged scalar potential is given by Φ(r) = -q / 4πε0r where q is the proton charge and 0 is the permittivity of the vacuum. We may use the relation.
to calculate the charge density associated with this potential. (r) = (r') / 404 |r - r'| dV' where (r) is the charge density and the integral represents the charge density across all space. We discover by equating the two formulas for (r) and solving for (r) that ρ(r) = qδ(r) (r) where (r) is the Dirac delta function representing a point charge at the origin. In other words, the charge density associated with a neutral hydrogen atom's time-averaged scalar potential is a point charge placed at the proton's location. neutral hydrogen atom's time-averaged scalar potential is given by Φ(r) = -q / 4πε0r where q is the proton charge and 0 is the permittivity of the vacuum. We may use the relation.
learn more about proton here:
https://brainly.com/question/1252435
#SPJ4
when water is heated, the rate at which
The rate at which water molecules gain kinetic energy and escape the liquid phase into a gaseous phase increases as the temperature increases.
In detail, when water is heated, the molecules absorb the energy and start to vibrate more and more vigorously. If the water is heated to its boiling point, 100°C, the molecules have gained enough kinetic energy to escape the liquid phase and transition into a gaseous phase (steam).
This process of a substance changing from a liquid to a gas is called boiling or evaporation. As the temperature of water continues to increase, the rate at which molecules escape the liquid phase also increases, leading to an increase in the rate of boiling or evaporation.
To learn more about water, visit:
https://brainly.com/question/28465561#
#SPJ11
when 50g of solid carbon dioxide(dry ice) sublimes 28.6kj of heat are required. how much heat would be needed to produce 57g of carbon dioxide gas from the sublimation of dry ice
When 50g of solid carbon dioxide (dry ice) sublimes, 28.6kj of heat are required. To produce 57g of carbon dioxide gas from the sublimation of dry ice, you would need approximately 40.4kj of heat.
The calculation of the amount of heat required to produce 57g of carbon dioxide gas from the sublimation of dry ice can be done by using the heat of sublimation. The heat of sublimation is the amount of energy required to turn a substance from a solid to a gas. In this case, the heat of sublimation for carbon dioxide (dry ice) is 28.6kj/mol. Since 1 mol is equal to 44.01g, then 28.6kj/mol is equal to 0.652kj/g. To calculate the amount of heat required to produce 57g of CO2 from the sublimation of dry ice, we can multiply 0.652kj/g by 57g, which gives us a total of 40.4kj of heat.
Learn more about carbon dioxide:
https://brainly.com/question/29437871
#SPJ4
When oil and gas are trapped by impenetrable layers of rock, what will form?
Answer:
These traps hold oil and gas because the earth has been bent and deformed in some way. The trap may be a simple dome (or big bump), just a “crease” in the rocks, or it may be a more complex fault
All pore spaces in the rocks are filled with fluid, either water, gas, or oil. Gas, being the lightest, moves to the top. Oil locates right beneath the gas, and water stays lower.
Once the oil and gas reach an impenetrable layer, a layer that is very dense or non-permeable, the movement stops. The impenetrable layer is called a “cap rock.”
