Sterochemical priority ranks atoms with substituents of highest molecular weight {{c1::highest}}
Answers
Stereochemical priority ranks atoms with substituents of highest molecular weight highest. This means that when determining the stereochemistry of a molecule, the atom with the highest molecular weight substituent will be given the highest priority.
For example, if there are two substituents attached to a carbon atom, one with a methyl group (CH3) and the other with an ethyl group (C2H5), the ethyl group would be given higher priority due to its higher molecular weight.
To rank atoms based on stereochemical priority, you should follow these steps:
1. Determine the atoms directly attached to the chiral center.
2. Rank the atoms based on atomic number, with higher atomic numbers receiving higher priority.
3. If two atoms have the same atomic number, proceed to the atoms they are bonded to and rank based on their atomic numbers.
4. Continue this process until a difference in atomic number is found, and assign the highest priority to the substituent with the highest molecular weight.
In summary, stereochemical priority ranks atoms with substituents of highest molecular weight as the highest.
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Related Questions
If a reaction has a low rate that means ____.
Some reactions take hundreds, maybe even thousands of years while other can happen in less than one second.
Answers
Answer: If a reaction has a low rate that means the molecules combine at a slower speed than a reaction at a higher rate
Explanation:
The rate of a reaction for a chemical reaction is change in concentration of reactants or change in concentration of products per unit time.Rate of reaction depends on type and nature of reaction.It also depends onthe physical state of reactants, number of reactants and complexity of reaction.
The rate of reaction:
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identify the δh and δs for the following physical change of br2. br2(g) → br2(g)
Answers
The enthalpy change (ΔH) for the physical change of Br2 from the gas phase to the gas phase (Br2(g) → Br2(g)) is zero. The entropy change (ΔS) for this physical change is also zero.
In a physical change, the chemical substance remains the same, and there is no breaking or forming of chemical bonds. In the case of Br2 going from the gas phase to the gas phase, there is no change in the chemical identity or composition of the substance.
The enthalpy change (ΔH) measures the heat energy transfer during a reaction or process. Since there is no change in the chemical bonds or composition of Br2 in this physical change, there is no transfer of heat energy, and thus ΔH is zero.
The entropy change (ΔS) quantifies the degree of disorder or randomness in a system. In this physical change, the arrangement and distribution of Br2 molecules remain unchanged, leading to no change in entropy. Therefore, ΔS is also zero.
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in one or two sentences, describe the reaction of the residents of kansas to the lecompton constitution.
Answers
The residents of Kansas were overwhelmingly opposed to the Lecompton Constitution. This was large because the document protected slavery and allowed the state government to decide whether slavery should be allowed in the new state.
The people of the state saw this as an affront to their values and democratic rights and worked to defeat the constitution in a state referendum.
After much debate and campaigning, the Lecompton Constitution was defeated by over 10,000 votes. This was a major victory for antislavery advocates, who had worked hard to make sure the constitution was rejected in Kansas.
The residents of Kansas were overwhelmingly opposed to the Lecompton Constitution. This document was drafted by pro-slavery advocates and would have made slavery a permanent institution in the state.
The citizens of Kansas were furious, and it sparked a great deal of debate and conflict. Many residents were so opposed to the document that they decided to form an independent government and reject the Lecompton Constitution in a referendum.
The referendum passed in an overwhelming majority, and the Lecompton Constitution was rejected. This event was a major milestone in the struggle for free-state rights in the Midwest and demonstrated the power of the people to resist oppressive legislation.
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Consider these generic half-reactions. Half-reaction E° (V) x+(aq) + e- → X(s) 0.70
Y2+(aq) + 2e- → Y(s) 1.49
Z3+ (aq) + 3e — Zs) -1.22 Identify the congest oxidizing agent. a. X b. X+ c. Z d. Y2+ e. Z3+ f. Y
Answers
The oxidizing agent is a substance that gains electrons during a redox reaction, causing another substance to lose electrons and be oxidized.
In this case, the half-reaction with the highest E° value is\(Y_{2} +(aq) + 2e^{-} =Y(s)\)with an E° of 1.49, indicating that \(Y^{2+}\)is the strongest oxidizing agent. This is because it has the highest tendency to gain electrons and be reduced. On the other hand, X(s) has the lowest E° value of 0.70, making it the strongest reducing agent, as it has the highest tendency to lose electrons and be oxidized. In summary, the oxidizing agent in this reaction is \(Y^{2+}\) while the reducing agent is X. It's important to note that these values are used to predict the direction of a redox reaction and are based on standard conditions. In non-standard conditions, the actual potential difference may vary.
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An old refrigerator is rated at 500 W how many kilowatt hours of electric energy what does refrigerator use in 30 days assume the refrigerator is running 12 hours per day
Answers
The refrigerator would use 180 kilowatt-hours (kWh) of electric energy over the course of 30 days, assuming it runs for 12 hours each day.
To calculate the kilowatt-hours (kWh) of electric energy used by the refrigerator in 30 days, we need to multiply the power rating by the total running time.
Given:
Power rating of the refrigerator = 500 W
Running time per day = 12 hours
Number of days = 30
First, we need to convert the power rating from watts to kilowatts:
Power rating = 500 W / 1000 = 0.5 kW
Next, we calculate the total energy used in kilowatt-hours (kWh) over the 30-day period:
Energy used = Power rating × Running time × Number of days
Energy used = 0.5 kW × 12 hours/day × 30 days
Energy used = 180 kWh
Therefore, the refrigerator would use 180 kilowatt-hours (kWh) of electric energy over the course of 30 days, assuming it runs for 12 hours each day.
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how many atoms are in 4.5 moles of Al?
Answers
Explanation:
4.5×6.022×10²³
27.099×10²³
According to Avogadro's number, there are 27.10×10²³ atoms in 4.5 moles of Al.
What is Avogadro's number?Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.
It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .
According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.
Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number.As 1 mole =6.023×10²³ atoms , thus,4.5 moles =4.5×6.023×10²³ = 27.10×10²³ atoms.
Thus, there are 27.10×10²³ atoms in 4.5 moles of Al.
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If 12,027.5 J of heat are absorbed by 760.6 g of water, what will be the change in temperature
Answers
Answer
ΔT = 3.78x10^-3 °C
Explanation
Given:
Energy (Q) = 12.0275 J
Mass of water = 760.6 g
We know the specific heat capacity of water = 4.182 J/g °C
Required: The change in temperature
Solution
Q = m x Cp x ΔT
ΔT = Q/m x Cp
ΔT = 12.0275 J/(760.0 g x 4.182 J/g °C)
ΔT = 3.78x10^-3 °C (or 0.00378 °C)
What volume does 0.556 mol of a gas occupy at a pressure of 715 mmHg and a
temperature of 58°C?
Answers
The gas with 0.566 moles will occupy a volume of 15.54 Liters at a pressure and temperature of 715mmHg and 58°C.
The ideal gas equation is given as PV = nRT. Here, n is the number of moles, R is the gas constant, T is the temperature, P is the pressure, V is the volume.
It is given that gas has moles 0.556 Moles and it has a pressure of 715 mm Hg with a temperature of 58 degrees Celsius ( 331 degrees Kelvin).
Putting all the values in the ideal gas equation to find the value of the volume of the gas.
715V = 0.556 x 62.36 x 331
V = 0.556 x 62.36 x 331/715
V = 15.54 Liters.
So, the gas will occupy a total volume of 15.54 Liters.
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What is a scientific model? How is a scientific model helpful to the brain for relaying a scientific
concept?
Answers
Answer: A scientific model is a physical and mathematical and conceptual representation of a system of ideas, events or processes.
ANd also for your second question i dont know what you mean?
Explanation:
Scientists work to recognize and comprehend patterns in our world by applying their scientific expertise to provide predictions about the patterns.
What is the main purpose of scientific model?In a range of scientific specialties, from chemistry and physics to biology and the Earth sciences, research models are employed to explain and forecast the behavior of real things or systems. The ability to depict things that are too little or enormous, explain either past or present, and forecast the future are all advantages of employing model beyond nature.
Why are scientific models important?Models can help you visualize something is difficult to see or understand. Models can help in scientific predictions, process comprehension, and concept communication. Because it frequently includes a variety of hypotheses or facts, an evolutionary theory varies from other general explanations. A science simulation may be used to verify a scientific theory or to demonstrate a scientific model.
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if two molecules of glucose (c6h12o6) are joined via condensation synthesis, the resulting molecule would have a molecular formula of .
Answers
The condensation reaction between two molecules of glucose would result in the formation of maltose (C12H22O11) and the release of water.
Carbohydrates are organic compounds that are used to store energy. An example of a carbohydrate is glucose, which is a single sugar or a monosaccharide. The process of forming larger molecules from the combination of simple sugars is called the condensation process. A water molecule is released in the process of combining the molecules together through a glycosidic bond.
The condensation reaction for two molecules of glucose (C6H12O6) results in the formation of maltose, a disaccharide, and the release of water. The molecular formula of maltose is C12H22O11. It can be observed that the condensation reaction shown below is balanced.
Glucose (C6H12O6) + Glucose (C6H12O6) → Maltose (C12H22O11) +H2O
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Convert 3.5mol of CO2 to grams.
Answers
The Liquified Petroleum Gas (LPG) has the composition of 60% Propane (C 3
H 8
) and 40% Butane (C 4
H 10
) by volume: (a) Find the wet volumetric and gravimetric analysis of the products of combustion when the equivalence ratio (Φ)=1.0. (b) What is the stoichiometric air to fuel ratio for the LPG.
Answers
The balanced combustion reaction for propane can be represented as:
C₃H₈ + (5/2)O₂ → 3CO₂ + 4H₂O
And the balanced combustion reaction for butane can be represented as:
C₄H₁₀ + (6.5)O₂ → 4CO₂ + 5H₂O
Since LPG is composed of 60% propane and 40% butane by volume, we can calculate the wet volumetric and gravimetric analysis based on these proportions.
Wet volumetric analysis:
For the wet volumetric analysis, we consider the volume of the products of combustion relative to the volume of the LPG consumed.
Propane (C₃H₈):
The stoichiometric coefficient of propane in the combustion reaction is 3. Therefore, for every mole of propane burned, we will have 3 moles of CO₂ and 4 moles of H₂O formed.
Butane (C₄H₁₀):
The stoichiometric coefficient of butane in the combustion reaction is 4. Therefore, for every mole of butane burned, we will have 4 moles of CO₂ and 5 moles of H₂O formed.
Considering the initial composition of 60% propane and 40% butane by volume, we can calculate the volumetric composition of the products of combustion:
Volumetric composition of CO₂:
(0.6 * 3) + (0.4 * 4) = 3.6
Volumetric composition of H₂O:
(0.6 * 4) + (0.4 * 5) = 4.6
Therefore, the wet volumetric analysis of the products of combustion is 3.6 parts CO₂ to 4.6 parts H₂O.
Wet gravimetric analysis:
For the wet gravimetric analysis, we consider the mass of the products of combustion relative to the mass of the LPG consumed.
Using the molar masses of the compounds involved in the combustion reaction:
Molar mass of CO₂ = 44 g/mol
Molar mass of H₂O = 18 g/mol
Gravimetric composition of CO₂:
(0.6 * 3 * 44 g/mol) + (0.4 * 4 * 44 g/mol) = 158.4 g
Gravimetric composition of H₂O:
(0.6 * 4 * 18 g/mol) + (0.4 * 5 * 18 g/mol) = 74.4 g
Therefore, the wet gravimetric analysis of the products of combustion is 158.4 grams CO₂ to 74.4 grams H₂O.
(b) The stoichiometric air to fuel ratio for LPG can be determined based on the balanced combustion equations for propane and butane.
For propane (C₃H₈):
C₃H₈ + (5/2)O₂ → 3CO₂ + 4H₂O
The stoichiometric coefficient for propane is 1, which means we need 5/2 moles of O₂ for every mole of propane.
For butane (C₄H₁₀):
C₄H₁₀ + (6.5)O₂ → 4CO₂ + 5H₂O
PLEAS HELP
Help………..
Answers
Because data will always be needed when making a hypothesis that leads into a theory,
Secondly, a teenager is a group of multiple people who which can be tested and that is why it’s a scientific theory
Answer:
Question 1: B. A set of hypotheses accepted as an undeniable fact.
Question 2: C. Will fish living in freshwater be happier than those living in sa.lt.water.
Explanation:
A scientific theory is a rule of nature that can never be changed.
A hypothesis is a supposition or a proposed idea that can be tested.
which one of these elements is the lightest: 1- oxygen , 2- carbon , 3- nitrogen , 4- neon.
idk what neon is but that’s an answer so...
Answers
What does the reducing agent do in a redox reaction? (A.P.E.X)
Answers
Answer:
The reducing agent donates electron to the oxidizing agent and gets oxidized itself
Explanation:
In an oxidation-reduction reaction, also known as REDOX reaction, one of the reactants is called OXIDIZING AGENT while the other is called REDUCING AGENT. The reducing agent is called so because it reduces another substance in the reaction.
It reduces another atom/ion by donating electrons to that atom, hence, getting oxidized itself in the process. For example, in the following reaction:
H2 + F2 → 2HF
Fluorine is getting oxidized from -2 to 0 by donating electrons to H and reducing it from +2 to 0.
Answer:
Reduces another atom
Explanation:
:)
Write equations to show how ions are produces in the two solutions that conduct electricity (0.1 M HCl - strong and 0.1 M Acetic Acid - weak).
Answers
In a dilute solution, the forward reaction (dissociation of acetic acid) predominates, and the concentration of hydrogen ions is much lower than in a solution of a strong acid like HCl.
The dissociation of HCl in water produces hydrogen ions (H+) and chloride ions (Cl-):
HCl → H+ + Cl-
Since HCl is a strong acid, it completely dissociates into ions in aqueous solution.
The dissociation of acetic acid (CH3COOH) in water produces hydrogen ions (H+) and acetate ions (CH3COO-):
CH3COOH + H2O ⇌ H3O+ + CH3COO-
In this case, acetic acid is a weak acid, which means it only partially dissociates into ions in aqueous solution. The reaction is reversible because acetate ions can also react with hydrogen ions to form acetic acid and water:
CH3COO- + H3O+ ⇌ CH3COOH + H2O
However, in a dilute solution, the forward reaction (dissociation of acetic acid) predominates, and the concentration of hydrogen ions is much lower than in a solution of a strong acid like HCl.
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1
N
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5
6
7
| 8 9 10
Which is evidence that a chemical reaction has likely occurred?
a liquid slowly losing volume
the formation of a precipitate
boiling water releasing steam
a change in the shape of a solid
Answers
Answer:
The new substance will need more energy to form its chemical bonds than the old substance will release. ... More energy will be released from the old substance than the new substance will need to form its chemical bonds.
Explanation:
This is the answer I got. Hope it's really helpful
Answer:
"Which is evidence that a chemical reaction has likely occurred?"
The correct answer would be,
B. the formation of a precipitate
Explanation:
Got it right on my test, have a great day!
If the annual rate of CO2 increase is 2.3 ppm and the concentration in 2017 is 407 ppm, what concentration would you expect in 2047
Answers
If the annual rate of CO₂ increase is 2.3 ppm and the concentration in 2017 is 407 ppm, we would expect a concentration of 729.23 ppm in 2047
The concentration of CO₂ in 2047 can be calculated using the formula:
\(C_2= C_1*(1 + \frac{r} {100})^n\)
Where C₁ is the initial concentration (in 2017), r is the annual rate of increase, and n is the number of years.
Substituting the given values, we get:
C₂ = 407*(1 + 2.3/100)³⁰
C₂ = 407*(1.023)³⁰
C₂ = 729.23 ppm
It's important to note that this calculation is based on a linear model and assumes a constant rate of increase, which may not necessarily hold true in reality.
The actual concentration in 2047 could be higher or lower depending on a variety of factors such as changes in global emissions policies and natural carbon sinks.
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the number of different colors used on a form should be limited to ____ colors exclusive of black, white, and gray.
Answers
Yes, the number of different colors used on a form should be limited to three colors, exclusive of black (K), white (W), and gray (G).
When designing a form, it is generally recommended to keep the color scheme simple and limited. Using too many colors can create visual clutter and make the form harder to read and understand. By restricting the number of colors to three (excluding black, white, and gray), you can maintain a clean and cohesive design.
Black, white, and gray are considered neutral colors that are often used for text, backgrounds, or borders. By excluding them from the count of different colors, you ensure that you have three additional colors for highlighting important information, indicating sections, or adding visual interest.
This limited color palette helps create a visually balanced form that is both aesthetically pleasing and functional, making it easier for users to navigate and complete the form.
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in a titration of 35.00 ml of 0.737 m h2so4, ml of a 0.827 m koh solution is required for neutralization. question 25 options: 25.8 62.4 39.3 1.12 35.0
Answers
For neutralization in a titration of 35.00 mL of 0.737 M H₂SO₄, 62.4 mL of a 0.827 M KOH solution is needed.
H₂SO₄ + 2 KOH ---> K₂SO₄+ 2 H₂O
from the concentration equation
m1 n1 v1 = m2 n2 v2 ( since m = molarity , n = factor and v = volume)
M1 = 0.737 M
n1 = 2
V1 = 35 mL
M2 = 0.827 M
n2 = 1
V2 = ??
0.737 m x 2 x 35 mL = 0.827 m x 1 x v2
v2 =62.4
Hence, 62.4 mL of a 0.827 M KOH solution is needed for neutralization.
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A truck was carrying a substance in a tank. the molecules of that substance were moving away from each other. the truck parked overnight in a place where energy transferred out of the substance. in the morning the substance was a gas .how were the molecules moving in the morning? explain why the molecules are moving that way after the energy was transferred out of them.
Anyone please help me with this i don’t get it and it’s due
Answers
Answer:
maybe it was ice and the ice melted and then evaporated?? im not too sure either thats just my guess. Also it couldve gotten hotter inside the truck thats why it melted and evaporated.
If you were testing how effective different dish soaps were at cleaning grease off of dishes, thé dependent variable wo
be the:
A: cleanliness of washed dishes
B: temperature of the wash water
C: types of grease
D: different dish soaps
Pls help meeeee
Answers
Answer: B. and maybe C. and definetly D.
Explanation:eh i looked at the dishwasher soaps and some were better than others
Answer:
D. Different dish soap
Explanation:
The dependent variable is the variable being tested and measured in an experiment, and is 'dependent' on the independent variable.
When we look at rhe example you gave we can see that the only variable that fan be measured and tested, and is dependent would be the dish soap.
Select all correct answers. Breaking the chemical bonds in reactions requires:
proper orientation of the molecules.
collisions between particles.
an overall release of energy.
sufficient kinetic energy to break the bonds.
an overall decrease in energy.
Answers
The correct answers are: proper orientation of the molecules; collisions between particles; and sufficient kinetic energy to break the bonds, as breaking chemical bonds in reactions requires proper orientation of the molecules and collisions between particles.
Chemical reactions involve the breaking of bonds between atoms in reactant molecues and the formation of new bonds between atoms in product molecules. Breaking these bonds requires a certain amount of energy, which can be supplied through collisions between particles and the proper orientation of the molecules involved in the reaction. When two reactant molecules collide, the orientation of their atoms is important. The atoms need to be in the correct position relative to each other for the chemical bonds to break and new bonds to form.
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Meera wants to improve the percolation rate and fertility of clayey soil what should she add to the soil ?
Answers
in a properly constructed lewis dot structure, how many pairs of electrons are there in an atom of nitrogen?
Answers
A nitrogen atom has five valence electrons, which can be shown as one pair and three single electrons.
What is lewis dot structure ?Lewis structures, also known as Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures, are diagrams that display the interatomic interactions as well as any lone pairs of electrons that may be present in a molecule.
Two double bonds exist between the atoms of carbon and oxygen in the Lewis structure of CO2. Each oxygen atom must form bonds with four distinct carbon atoms, according to the octet rule.Having five valence electrons, nitrogen. 4 electrons are arranged on either side of an N to represent the Lewis structure. Next, one of the four electrons is paired with the fifth electron. There are now 3 unpaired electrons left.Learn more about Lewis dot structure here:
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Which of the following is a reasonable way of describing the density of a gas at STP
Answers
Answer:the answer is a
Explanation:
The density of a gas at standard temperature and pressure conditions is 1.40 grams per liter.
What are standard temperature and pressure conditions?Standard temperature and pressure are defined as a standard set of conditions required for experimental measurements which are established to allow comparison between different sets of data.
Standards which are commonly used are those International Union of pure and applied chemistry and national institute of standards and technology.These are not universally accepted standards but are the ones which are commonly used.
Standard conditions of pressure and temperature are necessary to define standard reference conditions used to express volumes of liquids and gases.These values are important to physicists, chemists ,engineers ,pilots and navigators.
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The pressure for 1.0 mol of a gas at 0oC in 3.0 L container is calculated to be 7.5 atm using the ideal gas equation (PV = nRT). The pressure of the gas is measured and found to be 7.1 atm. Which of the following best explains the reason for the discrepancies in the two values?
Answers
The best explanation would be that the temperature of the gas has dropped before measuring the pressure.
Relationship between temperature and pressure of gasesAccording to pressure law, the pressure of a gas is directly proportional to its temperature, provided the volume of the gas remains constant.
Thus, since the initial pressure of the gas was calculated to be 7.5 atm, the temperature of the gas must have dropped in order for the measured pressure to be 7.1 atm.
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Is water a metal or non metal
Answers
Answer:
NON METAL
Explanation:
come on really
a nuclear reaction that causes similar succeeding reactions is known as a _____.
Answers
A nuclear reaction that causes similar succeeding reactions is known as a chain reaction.
A chain reaction a chemical reaction or other process in which the products themselves promote or spread the reaction, which under certain conditions may accelerate dramatically.
A possible nuclear fission chain reaction. 1. A uranium-235 atom absorbs a neutron, and fissions into two new atoms (fission fragments), releasing three new neutrons and a large amount of binding energy.
neutrons released during a fission reaction cause other nuclei to split." This is applicable to fission reactions only wherein atoms split and produce neutrons that also cause further atoms to split, thus creating a chain or series of reactions.
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When the pressure of a gas decreases, which quantity will increase, assuming all other variables are held constant? (1 point)
O V
O T
O n
O R
Someone help me please (╥﹏╥;)
Answers
Answer:
The volume(V) of gas will increase when the pressure of the gas decreases assuming all the other variables are held constant.
Explanation: