The the density of the substance that sound travels through directly affects its speed. Helium and benzene are the two liquids of a three media mentioned. Mercury is a metal, but it is also liquid.
What is density, for instance?How much "stuff" is contained in a specific quantity of space is determined by its density. For instance, a block of the harder, lighter element gold (Au) will be denser than a block of heavier element lead (Pb) (Au). Styrofoam blocks are less dense than bricks. Mass per cent volume serves as its definition.
What are density's two characteristics?The two physical characteristics of matter—mass and volume—are necessary for the classification of something as matter. The mass to volume ratio of a substance or item is known as its density. Mass per volume unit or weight divided by volume are two other ways to describe density.
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do the equilibrium concentrations of the reactants and products depend on their initial concentrations?
Yes, it is a true statement that the equilibrium concentrations of the reactants and products will be dependent on the initial concentrations of the reactants.
What is equilibrium?We know that the term equilibrium has to do with the point wen the forward and the reverse reaction begin to occur at the same rate. When the system is at equilibrium, the rate of forward reaction is equal to the rate of reverse reaction.
We know that we can be able to obtain the concentration at equilibrium from the concentration of the species initially and thus it is safe to say that the equilibrium concentrations of the reactants and products depend on their initial concentrations.
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If 5g of an oxide of a metal gave 4g of the metal when reduced with hydrogen.What is the empirical of the oxide.(m=64,o=16)
The empirical formula of a 5g metal oxide that produced 4g of the metal upon reduction with hydrogen would be MO.
Empirical formulaLet's assume that the formula of the metal oxide is XO.
Mass of XO = 5 g
Mass of X after reduction of XO with hydrogen = 4g
Mass of O = 5 - 4 = 1 g
Now, let's divide the mass of each component by their molar masses.
X = 4/64 = 0.0625 mol
O = 1/16 = 0.00625
Dividing through by the smallest mol, what we are going to have is 1:1 mole ratio of the metal and oxygen. In other words, the empirical formula of the metallic oxide is XO.
If we replace X with M, the formula of the metallic oxide would be MO.
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a chemist is studying the reaction between the gaseous chemical species x and y2, represented by the equation above. initial rates of reaction are measured at various concentrations of reactants. the results are recorded in the following table.
The experimental rate law of the equation is given as Rate = k[X][Y²].
The rate law which is also known as the rate equation for a chemical reaction is defined as an expression that provides a relationship between the rate of the reaction and the concentrations of the reactants participating in it.
More precisely we can say that rate law is defined as the expression in which reaction rate is given in terms of molar concentration of reactants with each term raised to some power, which may or may not be same as the stoichiometric coefficient of the reacting species in a balanced chemical equation.
Hence, from the above table we can see the reaction is given as,
2X +2Y → 2XY
So, the rate law is given as Rate = k[X][Y²].
The given question is incomplete and the complete question is given below:
2X+Y2→X2Y2
A chemist is studying the reaction between the gaseous chemical species X and Y2 , represented by the equation above. Initial rates of reaction are measured at various concentrations of reactants. The results are recorded in the following table
Given the information in the table above, which of the following is the experimental rate law?
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A _______ file or buffer is used to thin the enhancement product to prepare the enhancement for a refill or rebalance.
coarse-grit
medium-grit
fine-grit
shiner
A Coarse-grit file or buffer is used to thin the enhancement product to prepare the enhancement for a refill or rebalance.
Different types of nail files are designed for different uses, so it's important to choose the right one.A fine-grained cushion file is gentle and effective for natural nails.
Basically, the higher the grit number, the smoother the file. A coarse file (80-100 grit) is best for acrylic nail extensions. A medium file (180 grit), like most chips and wraps, is great for shaping medium thickness extensions and shaping free ends of toenails.
A fine file (240-600 grit) is great for removing small bumps, burrs, or discoloration and shaping the free edge of your natural nail. Ultra-fine files (600-2400 grit) are used to polish and shine all types of nails. Binders come in a variety of materials including padded pillow binders, glass, mylar, and ceramics. Avoid metal files as they are hard and can crack your nails.
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based on the information provided, which of the following statements is false? in nh 2 , the nitrogen atom acquires a partial positive charge and the hydrogen atoms acquire a partial negative charge. in h 2 o , the hydrogen atoms acquire a partial negative charge, and the oxygen atom acquires a partial positive charge. in hcl , the hydrogen atom acquires a partial positive charge, and the chlorine atom acquires a partial negative charge. in lif , the lithium atom acquires a negative charge, and the fluorine atom acquires a positive charge.
The hydrogen atoms in NH2 gain a partial negative charge, whereas the nitrogen atoms gain a partial positive charge.
What exactly is a molecule with a balanced partial positive and negative charge?Polar molecules are defined as having a partial positive charge on one side and a partial negative charge on the opposite side of the molecule. One example of a polar molecule is water.
Hydrogen has a partial negative charge in what bond?The electrostatic attraction between a hydrogen atom with a partial positive charge and another atom (often O or N) with a partial negative charge is known as a hydrogen bond. As a result of the relative electronegativity of covalently bound atoms, these partial opposing charges are produced.
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Part A Predict whether each of the following molecules is polar or nonpolar Drag the appropriate items to their respective bins CH;l XeF4 GaH: NH; CBr4 SeF4 Bins: Polar Nonpolar
Nonpolar -CBr4 ,GaH ,XeF4
Polar - CH₃I ,NH₃ ,SeF₄
Polar molecules occur when there is an electronegativity difference between the bonded atoms. Nonpolar molecules occur when electrons are shared equal between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each other out.Polar molecules have a uniform distribution of electron density. A nonpolar molecule results from an unequal distribution of electron density. Polar compounds are arranged asymmetrically. They have polar bonds that are symmetrical.In general, pyramid-shaped and V-shaped molecules are said to be polar. Whereas the Linear molecules are said to be non-polar in nature. Water is said to be a polar molecule due to the difference in the electronegativities between the oxygen atom and the hydrogen
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why do metals tend to lose electrons to form positive ions; nonmetals tend to gain electrons to become; these elements are nonmetals that gain one electron to form 1 ions; do nonmetals tend to gain or lose electrons; metals tend to lose electrons to become positive ions; do metals gain or lose electrons to form ions; metals tend to lose electrons and become; why do metals lose electrons
In a reaction between two different types of materials, metals often lose electrons to finish out their octet whereas non-metals receive electrons to do the same.
A definition of an element.A crucial component of a whole. a simple material that cannot be divided into smaller components or transformed into another substance is referred to as in chemistry. Atoms, which are made up of protons, neutrons, and electrons, are the building blocks of an element. One element has a fixed number of protons in each of its atoms.
What does a simple word "elements" mean?A material is considered to be an element if all of its atoms contain the same number of protons, or, to put it another way, if all of the atoms. The most basic chemical forms are those of the elements.
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When a solution of sodium sulphate and barium nitrate are mixed, sodium nitrate solution and solid barium sulphate is formed. Explain the nature of reaction?
This is an example of a double displacement reaction where chloride ions replace sulphate ions and vice versa.
Double displacement reaction: what is it?When a portion of two ionic compounds is swapped, a double displacement reaction takes place, creating two new components. In aqueous solutions, where ions precipitate and exchange occurs, double displacement processes are most common.
For instance, a white precipitate of barium sulphate quickly forms when a solution of barium chloride and sodium sulphate are combined. These are ionic-based reactions. When the reactants are dissolved in water, they turn into ions, and when ions exchange in the solution, a product molecule is created.
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Which equation represents a spontaneous reaction?
(1) Ba + Ca2+ = Ba2+ + Ca i
(2) Co + Zn2+ → Co2+ + Zn
(3) Fe + Mg2+ → Fe2+ + Mg
(4) Ni + Mn2+ → Ni2+ + Mn
A spontaneous reaction is a reaction that favors the formation of products at the conditions under which the reaction is occurring.
What is spontaneous reaction?The equation that represents a spontaneous reaction is Ni + Mn2+ → Ni2+ + MnA spontaneous reaction serves as the reaction that is capable of proceeding in a given direction without outside source of energy.It is a reaction that is capable of occurring on it's own, without external force. Example of this reaction is the combustion reaction.Therefore, option 4 is a spontaneous reaction since it's a reaction between Nikel and magnesium and occur on its own.How do you determine if the reaction is spontaneous?If ΔH is negative, and –TΔS positive, the reaction will be spontaneous at low temperatures (decreasing the magnitude of the entropy term).When both of these conditions are met, the reaction occurs naturally. A spontaneous reaction is a reaction that favors the formation of products at the conditions under which the reaction is occurring.A spontaneous reaction is one that releases free energy, and so the sign of ΔG must be negative. Since both ΔH and ΔS can be either positive or negative, depending on the characteristics of the particular reaction, there are four different possible combinations.To learn more about spontaneous reaction refer to:
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provide a complete arrow pushing mechanism for reaction 1d. explain the origin of the stereochemistry observed in the product.
When stereoisomeric starting materials are used in a reaction, a stereospecific reaction results in a product from one reactant that is a stereoisomer of the product from the other.
While a stereoselective reaction chooses products from among those produced by the same, non-specific mechanism acting on a particular reactant, a stereospecific mechanism specifies the stereochemical outcome of a given reactant. A stereospecific mechanism, given a single, stereoisomeric ally pure starting material, will produce 100% of a specific stereoisomer (or no reaction), yet stereochemical integrity can readily be lost due to competing processes that produce distinct stereochemical results. Even if only one mechanism is at work on an isomerically pure starting material, a stereoselective process will typically yield numerous products. The term "stereospecific reaction" is ambiguous because the word "reaction" itself can refer to either the end product of a reactant mixture that may proceed through multiple competing, specific and non-specific mechanisms, or it can refer to a single-mechanism transformation (such as the Diels-Alder reaction), which could be stereospecific. The phrase stereospecific reaction is frequently used incorrectly to refer to a highly stereoselective reaction in the latter sense. Chiral synthesis is based on a mix of stereoselective and stereospecific transformations, where the optical activity of a chemical molecule is conserved. Stereospecific transformations are used to interconvert existing stereocenters.
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What group column is lithium on the periodic table?; What are the columns vertical called on the periodic table Why are they called this?; What are the columns going down the periodic table called?; What group or period contains Li and Cs?
The alkali metals are represented by the elements hydrogen, lithium (Li), sodium (Na), cesium (Cs), and francium (F) (Fr). Except for hydrogen, these metals are soft, glossy, low-melting, extremely reactive, and tarnish.
Lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium make up the chemical elements that make up the alkali metals (Fr). Group 1, which is located in the s-block of the periodic table, is made up of them and hydrogen. All alkali metals have an s-orbital for their outermost electron, and as a result, they all have many of the same distinguishing characteristics. In fact, the alkali metals offer the finest illustration of group trends in periodic table features, with elements exhibiting well-defined homologous behavior. Because lithium is the family's major member, it is sometimes known as the lithium family.
At standard pressure and temperature, the alkali metals are all gleaming, supple, and extremely reactive metals that rapidly lose their outermost electron to create cations with charge +1.
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identify each of the changes as either path dependent or path independent. you are currently in a sorting module. turn off browse mode or quick nav, tab to items, space or enter to pick up, tab to move, space or enter to drop. path dependent path independent answer bank
Answer:
turn off browse mode or quick nav, tab to items,
Explanation:
What is the ionic form of oxygen?
O-2 can serve as a metaphor for this oxygen ion.The type of ion that will form depends on how many electrons are in the outer shells, which may be predicted using the periodic table.
Why do oxygen ions form in pairs?In order to reach the n=2 level of energy and an octet on electrons in the outer shell oxygen, which has an electron configuration of (2, 6), must gain two electrons.The addition of two electrons will result in the oxide ion having a charge of 2.
Exists an ion of oxygen?The oxygen molecule is known as a negative oxygen ion (O2)4,5 because it successfully attracted an electron.Due to their significance to human life activities, the partially negative ions are frequently referred to as the "air vitamin."
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in which of the following groups of substances would dispersion forces be the only significant factors in determining boiling points?
The only significant factors in determining the boiling points, in dispersion forces are Cl2, Ne, CCl4. Correct answer: letter A.
This is because these molecules do not form any significant intermolecular forces, such as hydrogen bonding or dipole-dipole interactions, so dispersion forces are the only significant factors in their boiling points.
What are dispersion forces?Dispersion forces also known as London forces, are the weakest type of intermolecular forces. They are the forces of attraction between molecules due to the temporary, instantaneous dipoles that form as an electron in one atom is attracted to the nucleus of another atom.
These instantaneous dipoles induce dipoles in adjacent molecules, leading to attraction. Dispersion forces are responsible for the cohesion of nonpolar substances such as noble gases and hydrocarbons.
In which of the following groups of substances would dispersion forces be the only significant factors in determining boiling points?
I. Cl2
II. HF
III. Ne
IV. KNO2
V. CCl4
Group of options:
A. I, III, V
B. I, II, III
C. II, IV
D. III, IV, V
E. II, V
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based on the results you obtained in the lab today, calculate the percentage (by mass) of nahco 3 in one alka-seltzer tablet. you must show your calculations to receive credit for this question. hint: use the masses that you measured in the lab as your masses of nahco 3 and alka-seltzer
Percentage by mass of NaHCO₃ of Alka - Seltzer tablet in trial 1 is 57.04 %, in trial 2 is 56.91 % and in trial 3 is 3.26 %.
Trial 1 :
Mass of one Alka - Seltzer tablet = Mass of Alka - Seltzer tablets / 2
= 6.42 g / 2 = 3.21 g
Mass of NaHCO₃ in a single tablet = 1.831 g
Percentage by mass of NaHCO₃ in one Alka - Seltzer tablet
= ( Mass of NaHCO3 in a single tablet / Mass of one Alka - Seltzer tablet ) × 100
= ( 1.831 g / 3.21 g ) × 100
= 57.04 %
Percentage by mass of NaHCO₃ is 57.04 % .
Trial 2 :
Mass of one Alka - Seltzer tablet = Mass of Alka - Seltzer tablets / 2
= 6.48 g / 2 = 3.24 g
Mass of NaHCO₃ in a single tablet = 1.844 g
Percentage by mass of NaHCO₃ in one Alka - Seltzer tablet
= ( 1.844 g / 3.24 g ) × 100
= 56.91 %
Percentage by mass of NaHCO₃ is 56.91 %.
Trial 3 :
Mass of one Alka - Seltzer tablet = Mass of Alka - Seltzer tablets / 2
= 6.43 g / 2 = 3.215 g
Mass of NaHCO₃ in a single tablet = 0.105 g
Percentage by mass of NaHCO₃ in one Alka - Seltzer tablet
= ( 0.105 g / 3.215 g ) × 100
= 3.26 %
Percentage by mass of NaHCO₃ is 3.26 %.
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When a neutral atom loses one or more electrons, the total number of electrons _____________while the number of protons in the nucleus remains the same. The result is that the atom becomes a c___________—an ion with a net positive charge.
The opposite process can also occur. When a neutral atom gains one or more electrons, the total number of electrons _____________ while the number of protons in the nucleus remains the same. The result is that the atom becomes an a_____________—an ion with a net negative charge.
Answer:
When a neutral atom loses one or more electrons, the total number of electrons decreases while the number of protons in the nucleus remains the same.
The result is that the atom becomes a cation —an ion with a net positive charge.
The opposite process can also occur. When a neutral atom gains one or more electrons, the total number of electrons increases while the number of protons in the nucleus remains the same.
The result is that the atom becomes an anion —an ion with a net negative charge.
Explanation:
Khan Academy
When a neutral atom loses one or more electrons, the total number of electrons decreases while the number of protons in the nucleus remains the same. The result is that the atom becomes a cation - an ion with a net positive charge.
The opposite process can also occur. When a neutral atom gains one or more electrons, the total number of electrons increases while the number of protons in the nucleus remains the same. The result is that the atom becomes an anion - an ion with a net negative charge.
What is the mass of the precipitate formed when 50mL of 16.9% (w/v) solution of AgNO 3 is mixed with 50mL of 5.8% (w/v) NaCl solution? [Ag=107.8,N=14,O=16,Na=23,Cl=35.5]
The mass of the precipitate formed when 50mL of 16.9% (w/v) solution of AgNO 3 is mixed with 50mL of 5.8% (w/v) NaCl solution is 7.19 g.
Let's calculate the number of moles of NaCl:
Number of moles = Mass(g)/Molecular mass
Number of moles of NaCl = 50×5.8/100/58.5
= 50×5.8/100×58.5
= 0.05 mole
The mass of AgCl can be calculated by referring to Equation 1.
By applying POAC on Ag
Number of moles Ag in AgNO3 = Number of moles Ag in AgCl
Number of moles of AgCl = 0.05mole…(ii)
Molecular mass of AgCl = 143.5………..(iii)
Mass of AgCl = Number of moles × Molecular mass of AgCl ………(iv)
Substitute (ii) and (iii) in (iv)
= 0.05 × 143.5
= 7.16g
The mass of an object is a measure of its inertial properties or the amount of matter it contains. The weight of an object is a measure of the force exerted on it by gravity, or the force required to support it. Mass can best be understood as the amount of matter present in an object or body. Everything around us has mass.
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The reaction of a Grignard reagent with an aldehyde followed by dilute acid gives a (n) 20) A) secondary alcohol. C) ester B) primary alcohol. D) tertiary alcohol
The reaction of a Grignard reagent with an aldehyde followed by dilute acid gives a secondary alcohol.
Given reaction is followed:
[tex]CH_{3}CHO \rightarrow CH_{3}COHHph[/tex] in presence of phMgBr, ether and [tex]H_{3}O^{+}[/tex]Aldehydes or ketones' carbonyl group, C=O, reacts with organolithium or Grignard reagents to produce alcohols. The type of alcohol produced depends on the carbonyl's substitutes.
A secondary alcohol is a substance that contains a saturated carbon atom with two additional carbon atoms linked to it and a hydroxy group, or OH.
A chemical molecule with the generic formula RMgX, where X is a halogen and R is an organic group, typically an alkyl or aryl, is known as a Grignard reagent or Grignard compound.
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sorbitol is . group of answer choices a. used in candies and gums
b. a sugar alcohol all of these c. choices are correct. d. absorbed and metabolized more slowly than glucose and other sugars
Option (c) is correct All of these choices:
Sorbitol used in candies and gumsSorbitol is sugar alcoholabsorbed and metabolized more slowly than glucose and other sugarsSorbitol is one of the main photosynthetic end products and serves as a storage and transport sugar in most plant families. Synthesis of sorbitol takes place by catalysis of glucose via NADP-dependent sorbitol-6-phosphate dehydrogenase (S6PDH). Sorbitol is further degraded to fructose by NAD+ sorbitol dehydrogenase in sink tissues. It plays an important role in osmotic adjustment in cell cytoplasm under various abiotic stresses such as salinity, chilling, and drought .Sorbitol is slowly absorbed by passive diffusion in the small intestine.Sorbitol is a white, hygroscopic, crystalline powder. It melts at 97°C and has excellent pH and heat stability in food processing.
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(a) When (Z)-3-methylhex-3-ene undergoes hydroboration-oxidation, two isomeric products are formed. Give their structures, and label each asymmetric carbon atom as R or (S). What is the relationship between these isomers?
(b) Repeat part (a) for E-methylhex-3-ene. What is the relationship between the products formed from (Z)-3-methylhex-3-ene and those formed from (E)-3-methylhex-3-ene?
carbon atom in their structures. how these isomers are related to one another. Two isomeric compounds are produced by the hydroboration-oxidation of (Z)-3-methylhex-3-ene.
What is isomeric ?
The asymmetric carbon atoms in their structures with the letters (R) or (S). isomers are related to one another. Two isomeric compounds are produced during the hydroboration-oxidation reaction on (Z)-3-methylhex-3-ene. Two isomeric compounds are produced during the hydroboration-oxidation reaction on (Z)-3-methylhex-3-ene. List their structures and assign the letters R or S to each asymmetric carbon atom (S). isomers relate to one another.
For E-methylhex-3-ene, repeat the section. the products made from (Z)-3-methylhex-3-ene and those made from (E)-3-methylhex-3-ene related to one another.
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Plan a method to investigate the effect of changing the mass of sodium carbonate powder on the highest temperature reached.
Answer:
How do you measure the mass of a sodium carbonate reaction?
Place on a balance and record the mass. Put 20 drops of sodium carbonate solution into the middle well followed by 20 drops of calcium nitrate solution.
Put on a balance, then note the mass. 20 drops of a calcium nitrate solution should be added to the middle well after 20 droplets of sodium carbonate solution.
What is mass?A body's mass is an inherent quality. Prior to the discoveries of the atom or particle physics, it was widely considered to be tied to the amount of matter within a physical body. It was discovered that, despite having the same quantity of matter in theory, different atoms and elementary particles have varied masses.
There are various conceptions of mass in contemporary physics that are theoretically different but physically equivalent. The resistance of the body to accelerate (change of velocity) in the presence of a net force can be measured experimentally as mass. Put on a balance, then note the mass. 20 drops of a calcium nitrate solution should be added to the middle well after 20 droplets of sodium carbonate solution.
Therefore, put on a balance, then note the mass. 20 drops of a calcium nitrate solution should be added to the middle well after 20 droplets of sodium carbonate solution.
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Some nuclear power plants use plutonium-239 which is produced in breeder reactors. The rate-determining step is the second B-emission. How long does it take to make 1.00 kg of 299Pu if the reaction is complete when the product is 90% 39Pu ?
0.357 days is required for the completion of 90% of 1kg 239Pu at the rate-determining step for the reaction of the second B-emission.
What is the rate-determining step?In chemical kinetics, the slowest step, sometimes referred to as the rate-determining step, or rate-limiting step frequently determines the overall pace of a process. This approximation of the rate-determining step is frequently used to simplify the prediction of the relevant rate equation for a given reaction mechanism (for comparison with the experimental rate law).
The collection of simultaneous rate equations for the various phases of the mechanism can theoretically be used to estimate the temporal evolution of the reactant and product concentrations. However, it is not always simple to solve these differential equations analytically; in some circumstances, numerical integration may even be necessary. The single rate-determining step hypothesis can be very beneficially simplified.
Calculation:We know that,
Half-life of 239Pu is 2.35 days
Then,
K=㏑[tex]\frac{2}{t1/2}[/tex];
⇒K=[tex]\frac{ln2}{2.35days}[/tex];
⇒K=0.294956day∧-1;
Given
N0=1kg;
Nf=0.90kg;
K=[tex]\frac{1}{t}[/tex]×㏑[tex]\frac{N0}{Nf}[/tex];
⇒t=[tex]\frac{1}{K}[/tex]×㏑[tex]\frac{N0}{Nf}[/tex];
⇒t=[tex]\frac{1}{0.294956day^-1}[/tex]×㏑[tex]\frac{1.00}{0.900}[/tex];
⇒t=0.357days
0.357 days is required for the completion of 90% of 1kg 239Pu at the rate-determining step for the reaction of the second B-emission.
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which of the following is used to convert back and forth from moles to grams? group of answer choices. Atomic NumberAvogadro's NumberMolar MassMass Number
Answer: Molar mass
Explanation:
Mass to mole: divide by molar mass
Mole to mass: Multiply by molar mass
Mole to particles/atoms/molecules: Multiply by Avogadro's Number
Particles/atoms/molecules to Mole: Divide by Avogadro's Number
Which answer choice correctly describes the difference between ionic and covalent bonds?
The correct option is b) Ionic bonds are formed when one atom takes another atom's electrons, while covalent bonds are formed when two atoms share electrons.
What is the difference between ionic and covalent bond?
Ionic bonds are created when a nonmetal and a metal exchange electrons. The term "ionic bond" refers to a chemical bond formed by electrostatic attraction between two ions with opposing charges.
They create covalent bonds when two nonmetals share electrons. The term "ionic bond" refers to a chemical bond formed by electrostatic attraction between two ions with opposing charges.
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Calculate the number of moles of ethanol burned.
The number of mole of ethanol burned, given the various data from the question is 0.17 mole
How do I determine the number of mole?First, we shall obtain the mass of ethanol burned. This is shown below:
Mass of ethanol before burning = 70.3 gMass of ethanol after burning = 62.5 gMass of ethanol burned =?Mass of ethanol burned = (Mass of ethanol before burning) - (Mass of ethanol after burning)
Mass of ethanol burned = 70.3 - 62.5
Mass of ethanol burned = 7.8 g
Finally, we shall determin the number of mole of ethanol burned. Details below:
Mass of ethanol burned = 7.8 gMolar mass of ethanol = 46 g/mol Number of mole of ethanol burned =?Mole = mass / molar mass
Number of mole of ethanol burned = 7.8 / 46
Number of mole of ethanol burned = 0.17 mole
Thus, the number of mole is 0.17 mole
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what reagents are needed to make phenol from benzene? a. [1] hno3, h2so4; [2] nano2, hcl; [3] lialh4; [4] h2o b. [1] sn, hcl; [2] hno3, h2so4; [3] lialh4; [4] h2o c. [1] hno3, h2so4; [2] sn, hcl; [3] nano2, hcl; [4] h2o d. [1] hno3, h2so4; [2] cucn [3] lialh4; [4] h2o e. [1] hno3, h2so4; [2] sn, hcl; [3] nano2, hcl; [4] cucn
Reagents used for making phenol from benzene are [tex]H_{2} SO_{4}[/tex] and [tex]HNO_{3}[/tex]. Another reagent used is NaOH.
Due to the pi electrons on the oxygen atom providing electron density into the ring, phenol is very reactive to electrophilic aromatic substitution. By using this general strategy, other groups can be joined to the ring using techniques including acylation, halogenation, and sulfonation.
But because phenol's ring is second only to aniline so strongly activated, chlorination or bromination of phenol will result in replacement of the hydroxyl group on all carbon atoms, ortho and para, instead of just one.
The conc. is used to warm the ben. sulfuric acid to develop acid sulfonated with benzene. The sodium phenoxide is then produced by heating the sodium hydroxide. Phenol is produced through sulphuric acid hydrolysis. The above list contains the reaction order.
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What is the mass of calcium hydroxide formed when you have 83 g of calcium chloride and an unlimited amount of water reacting?
CaCl2 + 2H2O→ Ca(OH)2 + 2HCI
The mass of the calcium hydroxide that is produced in the reaction is 55.5 g.
What is the mass of the calcium hydroxide?We already have the mass of the calcium chloride that have reacted and we were told in the question that the water that is one of the reactants is the one that is in excess.
The equation of the reaction has been shown in the question and it is going to serve s our guide as we are solving the problems as shown.
Number of moles of the calcium chloride= 83 g / 111 g/mol
= 0.75 moles
If 1 mole of the calcium chloride produces one mole of calcium hydroxide
Mass of the calcium hydroxide produced
= 0.75 moles * 74 g/mol
= 55.5 g
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Which of the following compounds has only primary and secondary hydrogen atoms? O 2-Methylpentane O 2.2,3-Trimethylpentane О 3-Methylpentane O 2.2-Dimethylpentane
The chemical supplied in this option, 2,2-Dimethylpentane, includes both the main and secondary hydrogen atoms that are needed.
A hydrogen atom that is found on a secondary carbon in an organic species is known as secondary hydrogen. The six hydrogen atoms that are connected to the secondary carbon atoms (C2, C4, and C6) are secondary hydrogen atoms. Primary hydrogen is hydrogen that is joined to one carbon atom and then to one additional carbon atom. So, only primary hydrogens are present in isobutene in all of the examples given.
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one could postulate that a competing pathway for this reaction is the attack of ethanol (our solvent) on the bromonium ion intermediate. provide the structure of this ether-containing product and provide a complete mechanism for its formation.
One may hypothesize that the bromonium ion intermediate is attacked by our solvent, ethanol, as a competing avenue for this reaction. give the composition of this ether-containing substance.
A solvent (s) is a substance that dissolves a solute, producing a solution (from the Latin solve, "loosen, untie, solve"). A solvent is often a liquid, although it can also be solid, gas, or supercritical fluid. All of the ions and proteins in a cell are dissolved in water, which is a solvent for polar molecules and the most frequent solvent employed by living things.
Temperature affects how much solute may dissolve in a certain amount of solvent. Solvents are extensively used in paints, paint removers, inks, and dry cleaning. Organic solvents have specific applications in paint thinners, dry cleaning (e.g., tetrachloroethylene), and other industries (toluene, turpentine).
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how much would the temperature of 175 g of water increase if 56.5 kj of heat were added? specific heat of water is 4.184 j/g °c.
When. 56.5kJ of heat is added to water of 175g, the temperature will change by 77.2°C
What is specific heat capacity?The specific heat capacity is defined as the quantity of heat (J) absorbed per unit mass (kg) of the material when its temperature increases 1 K (or 1 °C). Specific heat capacity is measured in J/(kg K) or J/(kg °C).
The quantity of heat required is given as H= mc∆T, where m is the mass of substance and ∆T is the change in temperature.
∆T= H/mc
H = 56.5kJ= 56500J
∆T = 56500/(175×4.184)
∆T= 77.2°C
Therefore the temperature change of the water is 77.2°C
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